CXD2720Q-2

E97315-PS

Single-Chip Digital Signal Processor for Karaoke

Description

The CXD2720Q-2 is a digital signal processor LSI

for Karaoke, suitable for use in LD/CD/CD-G/video

CD and the like.

A large capacity DRAM and AD/DA converters are

built in, and Karaoke functions such as key control

and microphone echo are contained on a single

chip.

Features

· 3-channel 1-bit AD converter and decimation filter

S/N ratio: 88 dB

THD + N: 0.016%

Filter pass band ripple:

less than ±0.008dB

Filter stop band attenuation: less than 62dB

(all characteristics are typical values)

· 2-channel 1-bit DA converter and oversampling

filter

S/N ratio: 98dB

THD + N: 0.006%

Filter pass band ripple:

less than ±0.2dB

Filter stop band attenuation: less than 41dB

(all characteristics are typical values)

· In addition to analog input/output, 2-channel input/

2-channel output of digital input/output are provided.

The interface also supports a variety of formats.

· 128K-bit DRAM for key control and microphone

echo processing

Functions

· Key controller pitch setting can be varied to a

maximum of ±1 octave with a precision of 14 bits

· Two key controllers are provided.

For their pitches, either of common or independent

setting is possible

· Key controller can be used for voice

· Microphone echo delay time can be varied to a

maximum of 185ms (when fs = 44.1kHz)

· Voice parametric equalizer

· Mixing function to support sound multiplexing

software

· Digital de-emphasis function

· Soft mute function

Structure

Silicon gate CMOS

Applications

Equipment having Karaoke function, such as

LD/CD, compact music center, video games, etc.

Absolute Maximum Ratings

(Ta = 25°C, V

= 0V)

· Supply voltage

0.5 to +7.0

· Input voltage

0.5 to V

+ 0.5 V

· Output voltage

0.5 to V

+ 0.5 V

· Operating temperature

Topr

20 to +75

°C

· Storage temperature Tstg

55 to +150

°C

Recommended Operating Conditions

· Supply voltage

4.5 to 5.5 (5.0 typ.)

· Operating temperature

20 to +75

°C

Input/Output Capacitance

· Input capacitance

9 (max.)

· Output capacitance

OUT

11 (max.)

· Input/output capacitance C

I/O

11 (max.)

Measurement conditions: V

= V

= 0V, F = 1MHz

Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.

100 pin QFP (Plastic)

CXD2720Q-2

128K bit DELAY RAM

DSP

CLOCK GENERATOR

/TIMING CIRCUIT

DAC1

DAC2

ADC1

ADC2

ADC3

MICRO

COMPUTER

I/F

SERIAL

DATA

I/F

AIN1

RVDT

SCK

XLAT

REDY

TRDT

LRCK

BCK

XWO

XTLI XTLO BFOT

AO1P

AO1N

AO2N

AO2P

AIN2

AIN3

Block Diagram

70 69 68 67

100

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

I
N

AO2P

AO2N

AIN2

XTLI

XTLO

LRCK

X768

BFOT

INVI

BCK

XMST

Pin Configuration

CXD2720Q-2

Pin Description

No.

RVDT

SCK

XLAT

REDY

TRDT

XWO

XRST

XS24

TST0

TST1

TST2

TST3

TST4

TST5

AIN3

AO1P

AO1N

AIN1

XTLO

XTLI

DRAM digital GND.

Digital GND.

Data input for microcomputer interface.

Shift clock input for microcomputer interface.

Latch input for microcomputer interface.

Transmission enabling signal output for microcomputer interface. Transmission
prohibited when Low.

Serial data output for microcomputer interface.

Window open input for synchronization. Normally High.

System reset input. Resets when Low.

Digital GND.

Digital power supply.

1-sampling 2-channel serial data output.

Serial data 24-/32-bit slot selection. 24-bit slot when Low. (valid for slave mode)

Test pin. Normally set Low.

Digital GND.

CH3 AD converter GND.

CH3 AD converter analog input (for microphone input).

CH3 AD converter power supply.

CH1 DA converter power supply.

CH1 DA converter analog positive phase output.

CH1 DA converter analog reversed phase output.

CH1 DA converter GND.

CH1 AD converter GND.

CH1 AD converter analog input.

CH1 AD converter power supply.

Digital power supply for master clock.

Crystal oscillator circuit output.

Crystal oscillator circuit input.

Digital GND for master clock.

CH2 AD converter GND.

Symbol

I/O

Description

CXD2720Q-2

No.

44 to 52

54 to 68

71 to 79

91 to 98

100

AIN2

AO2N

AO2P

X768

BFOT

INVI

BCK

LRCK

XMST

I/O

CH2 AD converter analog input.

CH2 AD converter power supply.

CH2 DA converter power supply.

CH2 DA converter analog reversed phase output.

CH2 DA converter analog positive phase output.

CH2 DA converter GND.

Digital GND.

Digital power supply.

Normally open.

Digital GND.

Normally open.

Digital GND.

Digital power supply.

Normally open.

Digital GND.

Test input pin. Normally set Low.

Clock, frequency-divider output (384fs).

Test pin. Normally set Low.

Normally open.

1-sampling 2-channel serial data input.

Serial bit transmission clock for serial input/output data SI and SO.

Sampling frequency clock for serial input/output data SI and SO.

BCK, LRCK master/slave mode switching input. Master mode when Low.

Digital GND.

Normally open.

Digital power supply.

Digital power supply for DRAM.

Symbol

I/O

Description

CXD2720Q-2

DC Characteristics

(AV

0 to 5 = XV

= V

0 to 3 = 5V ± 10%, AV

0 to 5 = XV

= V

0 to 7 = 0V, Ta = 20 to +75°C)

Item

Symbol

Conditions

Min.

Typ.

Max.

Unit Applicable pins

High level

Low level

High level

Low level

High level

Low level

High level

Low level

High level

Low level

Analog input

= 2.0mA

= 4.0mA

= 6.0mA

= 4.0mA

= 12.0mA

= V

, V

= V

, V

= V

, V

fs = 44.1kHz

0.7V

0.8V

0.8

250k

0.3V

0.2V

0.4

2.5M

µA

Resistance
between

and

Input voltage (1)

Input voltage (2)

Output voltage
(1)

Output voltage
(2)

Output voltage
(3)

Input leak current (1)

Input leak current (2)

Output leak current

Feedback resistance

Current consumption

Input voltage (3)

RVDT, SCK, XLAT, XWO, XRST, XS24, TST0 to TST5, X768, SI, XMST

AIN1, AIN2, AIN3

INVI

During input to bidirectional pins BCK, LRCK

XTLI

During output from bidirectional pins BCK, LRCK

SO, BFOT

TRDT

REDY

AO1P, AO1N, AO2N, AO2P

XTLO

CXD2720Q-2

Item

RVDT setup time relative to SCK rise

RVDT data hold time from SCK rise

SCK Low level width

SCK High level width

XLAT Low level width

XLAT High level width

SCK rise preceding time relative to XLAT rise

SCK rise wait time relative to XLAT rise

Delay time to REDY fall relative to XLAT rise.

Delay time to REDY fall relative to SCK rise

REDY fall preceding time relative to SCK rise

REDY rise preceding time relative to XLAT rise

REDY rise preceding time relative to SCK fall

XLAT fall wait time relative to SCK rise

XLAT fall delay time relative to REDY fall

Delay time from XLAT rise until TRDT data becomes active

Delay time from SCK rise until TRDT data becomes high-impedance

Delay time from SCK fall until TRDT data is verified

SCK rise wait time for next transmission

+ 20

+ 40

+ 50

+ 80

+ 70

SWL

SWH

LWL

LWH

SLP

LSD

LBD

SBD

BSP

RLP

RSDP

SLD

LDR

LDN

SDF

SDD

Symbol

Min.

Max.

Note 1)

is the cycle of 1/2 the clock frequency applied to the XTLI pin. (384fs)

Note 2) REDY and TRDT pins are the values for CL = 60pF.

Unit

CXD2720Q-2

Analog Characteristics (AV

0 to 5 = V

0 to 3 = XV

= 5.0V, AV

0 to 5 = V

0 to 7 = XV

= 0.0V, Ta = 25°C,

DSP: each function = OFF, gain = 1)

[1] ADC + DAC connection total characteristics

The measurement circuit in Figure 1-1 is used. Unless otherwise indicated, the measurement conditions are as

given below.

· Input signal ...1.0Vrms, 1kHz

· fs....................44.1kHz

· Rin .................0

Item

S/N ratio

THD + N

Dynamic range

Channel separation

Level difference between
channels

Analog full-scale input level

ADC input impedance

Analog current consumption

1.0Vrms, EIAJ (with "A" weighting filter)

1.0Vrms, EIAJ

0.5Vrms, EIAJ

EIAJ

Only ADC characteristics using DAC1,
EIAJ

Only ADC characteristics using DAC1

Rin = 0

Rin = 22k

0.016

0.012

108

0.05

1.26

2.06

34.6

0.03

Measurement conditions

Min.

Typ.

Max.

Analog input level which outputs digital full scale.

An optional analog input signal level Vin (Vrms) of 1.26Vrms or more can be set in digital full scale by the

measurement circuit external resistor Rin.

The calculation formula for external resistor Rin is:

Rin = 27.5

Vin 34.6 [k

] ......(1)

However, THD + N characteristics deteriorate for full-scale output as shown in Graph 1, so use of up to 80%

(when Rin = 0

, 0.8

1.26 (Vrms) = 1.0 (Vrms)

"analog full scale") of the analog signal level is recommended

for digital full-scale output.

In this case, the Rin calculation formula is the same as formula (1), except that Vin becomes 1.25

Vin.

Note that this change causes the output level after ADC + DAC to change.

Most of the above specifications are measurement values for analog full scale.

Unit

Vrms

CXD2720Q-2

Description of Functions

1. Master/Slave Modes

[Relevant pins] XMST, LRCK, BCK

When connecting multiple CXD2720Q-2s, or when using as a pair with a D/A converter such as the

CXD2558M, one of the CXD2720Q-2 should be in master mode to supply LRCK and BCK.

The clock applied to LRCK and BCK in slave mode must be synchronized to either the crystal oscillator clock

of the XTLI and XTLO pins or the external clock input from the XTLI pin

XMST

Slave mode

Master mode

Input

Output

Mode

LRCK, BCK I/O

2. Master Clock System

[Relevant pins] XTLI, XTLO, BFOT

768fs (fs = 44.1kHz) is assumed for the master clock system, and the connection is as shown below. (Please

inquire with regard to use at other than fs = 44.1kHz.)

(1) Master

Table 1-1. LRCK, BCK Mode Setting

768fs

XTLO

Frequency divider

XTLI

BFOT

768fs

384fs

768fs

XTLO

XTLI

768fs

OPEN

(2) Slave

CXD2720Q-2

3. Input/Output Synchronization Circuit

[Relevant pins] LRCK, XWO

During normal operation, synchronization is performed automatically to input LRCK (in slave mode), and phase

is matched with serial input data, but if there is a lot of jitter on LRCK, or during power input, synchronization

may be impossible. In this case, forced synchronization can be done by making the XWO pin Low for 2/Fs or

more. Forced synchronization operation is done by the timing of the second LRCK rising edge after the XWO

pin is made Low. When synchronization is completed, return the XWO pin to High.

4. Reset Circuit

[Relevant pins] XRST, XTLI, XTLO

This LSI must be reset after power is turned ON.

Reset is done by making the XRST pin Low for 1/Fs or more after supply voltage satisfies the recommended

operating condition, and the crystal oscillator clock of the XTLI, XTLO pins or the external clock input from the

XTLI pin is correctly applied.

5. Serial Audio Interface (SIF)

[Relevant pins] SI, SO, BCK, LRCK, XS24, XMST

Serial data is used for the external communication of the digital audio data.

The CXD2720Q-2 has one system each for input and output, and each one inputs/outputs 2 channels of data

at 1 sampling cycles. Either the 32-bit clock mode or 24-bit clock mode can be selected. In master mode, the

32-bit clock mode is fixed.

(1) Pin Configuration

The pins shown in the table below are assigned to SIF.

Pin
name

BCK

LRCK

XS24

XMST

I/O

Serial input; taken synchronized to BCK.

Serial output; output synchronized to BCK.

BCK input/output; either 32-bit clock mode (64fs) or 24-bit clock mode (48fs). BCK output
supports 32-bit clock mode only.

LRCK input/output (1fs).

SI0 slot number (24/32) selection input. Low: 24-bit slot; High: 32-bit slot. Valid only in slave
mode. Set High in master mode.

BCK, LRCK master mode/slave mode switching input. Low: master mode; High: slave mode.

I/O

Function

Table 5-1. Pin Configuration

CXD2720Q-2

(2) Operation Modes

The LRCK/BCK mode and SI/SO system settings can be selected by the setup register settings as follows.

LRCK/BCK Mode Setting

Setup register

SQ11
SQ10
SQ09

LRCK format
LRCK polarity selection
BCK polarity selection relative to LRCK edge

"0" : normal,

"1" : IIS

"0" : Lch High,

"1" : Lch Low

"0" : edge

"1" : edge

Function

Contents

Table 5-2. LRCK/BCK Mode Setting

SI/O System Register Setting

SI system

Setup register

SQ08
SQ07

SQ06
SQ05

SI data list
SI frontward/rearward truncation

SI data word length
SI data word length

"0" : MSB first,

"1" : LSB first

"0" : Forward truncation,
"1" : Rearward truncation

SQ06 SQ05

: 16 bits

: 24 bits

Function

Contents

Table 5-3. SI System Register Setting

SO system

Setup register

SQ04
SQ03

SQ02
SQ01

SO data list
SO forward/rearward truncation

SO data word length

"0" : MSB first,

"1" : LSB first

"0" : Forward truncation,
"1" : Rearward truncation
SQ02 SQ01

: 16 bits

: 18 bits

: 20 bits

: 24 bits

Function

Contents

Table 5-4. SO System Register Setting

CXD2720Q-2

(3) SIF Format

Serial I/F have one input/output system each, and except for slot number, the following formats can be set

independently for input and output, by setting the setup register. It can also be made to support IIS format, to

enable connection to Philips and other devices. The timing charts for each data format are given on the

following pages.

32-bit slot (XS24 = High)

MSB first 24 bits Forward truncation
MSB first 16 bits Rearward truncation
LSB first

24 bits Rearward truncation

1
0
1

SQ05 SQ06 SQ07

1
0
1

0
1
1

SQ08

0
0
1

Supplement

Supports 20, 16 bits

SI format

Setup register

Table 5-5. 32-bit Slot Serial IN

MSB first 16 bits Rearward truncation
MSB first 18 bits Rearward truncation
MSB first 20 bits Rearward truncation
MSB first 24 bits Rearward truncation
MSB first 24 bits Forward truncation
LSB first

24 bits Rearward truncation

0
1
0
1
1
1

SQ01 SQ02 SQ03

0
0
1
1
1
1

1
1
1
1
0
1

SQ04

0
0
0
0
0
1

SO format

Setup register

Table 5-6. 32-bit Slot Serial OUT

24-bit slot (XS24 = Low)

MSB first 16 bits Rearward truncation
MSB first 24 bits

LSB first

24 bits

0
1

SQ05 SQ06 SQ07

0
1

SQ08

0
0

Supplement

Supports 20, 16 bits for forward
truncation
Supports 20, 16 bits for rearward
truncation

SI format

Setup register

Table 5-7. 24-bit Slot Serial IN

MSB first 16 bits Rearward truncation
MSB first 18 bits Rearward truncation
MSB first 20 bits Rearward truncation
MSB first 24 bits
LSB first

24 bits

0
1
0
1
1

SQ01 SQ02 SQ03

0
0
1
1
1

1
1
1

SQ04

0
0
0
0
1

SO format

Setup register

Table 5-8. 24-bit Slot Serial OUT

Note 1) When performing 20-bit and 16-bit data input in serial IN 24-bit data format, fill the lower 4 and 8 bits

with "0", respectively.

Note 2)

means "don't care".

CXD2720Q-2

I
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l
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Digital Audio Data Input Timing (with polarities: SQ11 = 0, SQ10 = 0, SQ09 = 0)

Figure 5-1.

CXD2720Q-2

-
b

i
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s

l
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·

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Digital Audio Data Output Timing (with polarities: SQ11 = 0, SQ10 = 0, SQ09 = 0)

Figure 5-2.

CXD2720Q-2

6. Microcomputer Interface

[Relevant pins] RVDT, TRDT, SCK, XLAT, REDY

The CXD2720Q-2 performs serial audio interface format setting, volume, coefficient settings of microphone

echo delay amount and others by serial data from the microcomputer.

Further, bidirectional communication such as internal data read from the CXD2720Q-2 to the microcomputer

can be done at the rate of once in 1 LRCK.

(1) Pin Structure

The five external pins indicated in the table below are allocated for microcomputer interface.

Microcomputer interface begins operation when XLAT is received, so RVDT, TRDT, SCK and REDY are

connected in common, and by controlling (wiring) only XLAT separately, multiple CXD2720Q-2s can be used.

Pin
name

RVDT

TRDT

SCK

XLAT

REDY

Serial data input from microcomputer.

Serial data output to microcomputer. High impedance state unless this pin is set to internal
data read state by the microcomputer. Therefore, it is preferable to perform pull-up or pull-
down so that potential is not unstable when this pin is not active.

Shift clock for serial data. Input data from RVDT is taken according to SCK rise, and output
data from TRDT is sent out according to SCK fall.

Interprets the 8 bits of RVDT before this signal rises as transmission mode data, and the
bits before that as address data.

Transmission prohibited while at Low level. Transmission enabled at High. This pin is an
open drain, and must be pulled up externally.

I/O

Function

Table 6-1. Microcomputer Interface External Pins

CXD2720Q-2

(2) Description of Communication Formats

The data transmission timing between the microcomputer interface and coefficient RAM and setup register is

called the SV cycle, and is generated once in 1LRCK.

The SV cycle is generated immediately preceding the signal processing program, so it has absolutely no effect

on signal processing, and there is no risk of the sound being cut.

In read/write modes,

Address section + Mode section + Data section

act as one package of data to perform data transmission between the microcomputer and the CXD2720Q-2.

[Write] · For coefficient RAM

Address section (8 bits)

Mode section (8 bits)

Data section (16 bits)

D15

RVDT

SCK

XLAT

REDY

TRDT

[Read] · For coefficient RAM

Address section (8 bits) Mode section (8 bits)

Data section (16 bits)

D15

RVDT

SCK

XLAT

REDY

TRDT

Note) For both read and write, the data section is 24 bits for the setup register.

Figure 6-1. Examples of Communication

CXD2720Q-2

(3) Data Structure

Data structure is classified in three types, as shown in the table below. All data communication is done with

LSB first.

Name

A0 to A7

M0 to M7

D0 to D15/SQ00 to SQ23

16/24

Address section

Transmission
mode section

Data section

Coefficient RAM is 16 bits; setup register is
24 bits

Bit length

Contents

Remarks

(3)-1. Transmission Mode Section

The transmission mode section is 8 bits and has the following functions.

Bit

0: ON (No sound)
1: OFF

VS1

VS0

Setup register

Coefficient RAM (K-RAM)

0: Receive
1: Send

XVMT

VS1

VS0

VRD

SO Mute

Reserve

Data type

Reserve

Send/Receive

Name

Function

(3)-2. Address Section

The coefficient RAM has a 192-word structure, so the address section is 8 bits. The setup register has a 1-

word structure, so the address section data may be optional.

(3)-3. Data Section

Sixteen SCK are required, as the coefficient RAM has a 16-bit structure (D0 to D15). The setup register has a

24-bit structure (SQ00 to SQ23), so twenty-four SCK are required.

Table 6-2. Data Structure

Table 6-3. Transmission Mode Section

Note) Polarity as seen from the CXD2720Q-2

CXD2720Q-2

(4) Details of Communication Methods

The definitions of signal timing required for control from the microcomputer are given below.

(4)-1. Write

First, address section data and mode section data are sent from the microcomputer, synchronized to SCK, to

the RVDT pin.

The address section data is 8 bits both for the coefficient RAM and setup register, and the setup register

transmits optional data for 1 word length. Address section data is sent with LSB first.

Mode section data is fixed at 8 bits regardless of content.

The phase relationship between SCK and RV data (data applied to the RVDT pin) has the following restrictions:

· RV data must be verified before SCK rise (

20ns).

· RV data must be held for 1

+ 20ns or more after SCK rise (

SCK itself has the following restrictions:

· SCK Low level must be 1

+ 20ns or more (

SWL

· SCK High level must also be 1

+ 20ns or more (

SWH

After raising SCK which corresponds to mode section final data, XLAT is raised (

SLP

20ns). XLAT Low level

width must be maintained at 1

+ 20ns or more (

LWL

). Further, fall timing restrictions are:

· for the preceding transmission, if REDY falls due to SCK, as for write, 3

+ 20ns or more is required. (

SLD

)

· for the preceding transmission, if REDY falls due to XLAT, as for read, 20ns or more is required. (

LDR

)

Further, if preceding transmissions have been performed and REDY = Low, it is necessary to wait for REDY =

High to raise XLAT.

The procedure until this point is the same for write and read.

RVDT

SQ00

SQ23

SCK

XLAT

REDY

TRDT

SWL

SWH

LSD

SLP

BSP

SLP

SLD

SBD

LDR

RLP

LWL

LDR

SLD

or t

LWH

High-Z

D0/SQ00

D15/SQ23

Figure 6-2. Write Timing

CXD2720Q-2

Data section write begins after XLAT rise, and here also transmission must be with LSB first, with

and

restrictions. In addition, after raising XLAT at the starting point for sending to the data section, wait for 3

20ns or more for the first SCK rise. (

LSD

)

When 16 bits (coefficient RAM) or 24 bits (setup register) of this write is repeated, REDY = Low within 4

+ 50ns,

and the microcomputer is informed of waiting status for the SV cycle, which is the dedicated data rewrite cycle

by microcomputer interface. (

SBD

)

When REDY goes High again, the corresponding data is written.

The next communication restarts by using the REDY signal as follows.

· When REDY = Low, the SCK for the next transmission can rise (

BSP

20ns ).

· In the same way, when REDY = Low, the XLAT for the next transmission can fall (

LDR

20ns).

REDY will fall due to this transmission, but it is prohibited for XLAT to rise for the next transmission before the

REDY rises. Be sure to raise the next XLAT after REDY rises (

RLP

20ns ).

In order to restart the next transmission without using the REDY signal, the following conditions must be observed:

· There should be 2

+ 40ns or more left between the SCK rise for the final data section and the SCK rise for

the next transmission (

· In the same way, the XLAT for the next transmission can fall after waiting 3

+ 20ns or more after the final

data section SCK rise (

SLD

The

ss and

SLD

here are shorter times than

SBD

+ 50ns, so the restriction conditions are not much strict.

However, even in this case the rise of XLAT for the next transmission must come after REDY rise (

RLP

20ns).

Further, the restriction for XLAT fall at the starting point of this write from

SLD

can be:

SLD

+ 20ns if the preceding transmission was "write".

CXD2720Q-2

(4)-2. Read

First, address section and mode section data are transmitted synchronized to SCK, and XLAT is raised

matched with this; the procedure until this point is the same as for write, so the description is omitted here.

Read differs from write in that after XLAT rise, REDY falls within 3

+ 50ns (

LBD

), and the microcomputer is

informed of SV cycle waiting.

At this time, the TRDT pin changes from high-impedance state to active state (

LDN

+ 80ns) simultaneously

with REDY fall. When the read data is ready, the REDY pin changes from Low to High. When the data read out

from the TRDT pin is made TR, and SCK falls (

RSDP

20ns) when the REDY pin goes High, the first TR data

is defined within 2

+ 70ns (

SDD

). The microcomputer reads this data at SCK rise. The TR data is read in order

from the LSB with 16 bits for the coefficient RAM and 24 bits for the setup register by adding SCK, the

corresponding data is all read, and then read is completed.

Next, the method for restarting transmission after read is completed is described.

As in Case 1, there is a method for sending address section and mode section data consecutively after reading

all of the 16- or 24-bit data. There should be 2

+ 40ns or more left between the SCK rise for the final data read

and the next SCK rise (

ss), and this is established by the conditions

SWL

+ 20ns and

SWH

+ 20ns.

Further, at this read REDY changes from High to Low, but it is prohibited for the XLAT for the next

transmission to fall before this. If REDY = Low has been verified, XLAT can fall (

LDR

20 ns).

Also, while 16- or 24-bit data is being read from the TRDT pin, address and mode section data writing to the

RVDT pin for the next transmission can be started.

In Case 3, the final section of read data and the final data in the mode section overlap, and this allows shifting

to the next transmission processing in the shortest possible time after data read.

It is also possible to have data read and address and mode section write overlap partially, as shown in Case 2.

CXD2720Q-2

7. Setup Register

When the setup register is selected for microcomputer interface transmission mode, the following settings are

possible for serial audio interface and DAC.

Data
section bit

Control

When system reset is Low

SQ23 to 12

SQ11

SQ10

SQ09

SQ08

SQ07

SQ06, 05

SQ04

SQ03

SQ02, 01

SQ00

Reserve bit

LRCK format

LRCK polarity selection

BCK polarity selection
relative to LRCK edge

SI data list

SI frontward/rearward
truncation

SI data word length

SO data list

SO frontward/rearward
truncation

SO data word length

DAC forced mute

Must be Low for setup register setting
change

0: normal
1: IIS

0: Lch High
1: Lch Low

0: Falling edge
1: Rising edge

0: MSB first
1: LSB first
(24-bit rearward truncation)

0: Frontward truncation
(valid only for MSB first/24 bits/32 slots)
1: Rearward truncation

SQ06

SQ05

: 16 bits

: 24 bits

0: MSB first
1: LSB first

0: Frontward truncation
1: Rearward truncation

SQ02

SQ01

: 16 bits

: 18 bits

: 20 bits

: 24 bits

0: ON
1: OFF

All Low

Normal

Lch High

Falling edge

MSB first

Frontward truncation

16 bits

LSB first

Frontward truncation

16 bits

Table 7-1.

CXD2720Q-2

8. Coefficient RAM Setting
When the coefficient RAM is selected in microcomputer interface transmission mode, the coefficient
parameters such as each section's volumes and microphone echo delay amount can be set. Data settings
other than those given following in Tables 8-1 and 8-2 are "don't care".

(1) Fixed Values for System Initialization

When the system is initialized, the coefficient RAM must be set at the fixed values, shown below, for internal
operation.

Address

01H

02H

03H

19H

1AH

1BH

1CH

20H

21H

23H

24H

25H

26H

27H

28H

2DH

31H

32H

33H

34H

35H

68A9H

5121H

6A30H

5460H

0000H

4000H

0010H

4000H

1600H

2A00H

3FF8H

8000H

0000H

0008H

4000H

1600H

2A00H

3FF8H

8000H

623EH

447CH

36H

3BH

43H

46H

48H

50H

72H

73H

74H

75H

76H

77H

78H

79H

7AH

7BH

7CH

7DH

7EH

7FH

0000H

0008H

0000H

0001H

0008H

0092H

0209H

02CDH

0109H

FDA0H

FD19H

0189H

058AH

016DH

F7BEH

F72AH

0A4EH

2706H

34EEH

Fixed value

fs = 44.1kHz

fs = 48kHz

fs = 32kHz

Table 8-1.

Address

Fixed value

fs = 44.1kHz

fs = 48kHz

fs = 32kHz

CXD2720Q-2

(2) Setting Data

The relationships between the coefficient RAM and each function during DSP operation are as follows.

Table 8-2 (1). Coefficient RAM Setting Data (1/2)

Address

00H

04H

05H

06H

07H

08H

09H

0AH

0BH

0CH

0DH

0EH

0FH

10H

11H

12H

13H

14H

15H

16H

17H

18H

1DH

1EH

1FH

2EH

3CH

3DH

3EH

3FH

40H

41H

42H

DC1a1

DC1a0

DC1b

DC2a1

DC2a0

DC2b

PEQa

PEQb1

PEQb2

PEQg

KisLm

KisRc

KiaLm

KiaRc

KisRm

KisLc

KiaRm

KiaLc

KiaML

KiaMR

nRpR

nRpR_R

KLf

KRf

KLpc

KRpc

KLpt

KRpt

KdryE

SI data input level control

De-emphasis ON/OFF

DC cut1 coefficient for accompaniment

DC cut2 coefficient for voice

PEQ coefficient for voice

SI CH1 data

Lch mix

SI CH2 data

Lch mix

ADC CH1 data

Lch mix

ADC CH2 data

Lch mix

SI CH2 data

Rch mix

SI CH1 data

Rch mix

ADC CH2 data

Rch mix

ADC CH1 data

Rch mix

ADC CH3 (Mic) data

Lch mix

ADC CH3 (Mic) data

Rch mix

Pitch ratio for Lch

Pitch ratio for Rch

Pitch ratio switching for LR independent/LR common

Key control ON/OFF

Lch IIR4 output mix

Rch IIR4 output mix

Lch pitch control output mix

Rch pitch control output mix

Lch data

Echo mix

Lch data

Echo mix

Microphone PEQ output

Echo mix

Refer to Table 12-1

Refer to Table 9

Refer to Table 14-1

Refer to Table 14-3

Refer to Table 14-4

Refer to Table 12-1

Refer to Table 10-1

Common/8000H; independent/0000H

ON/8000H; OFF/0000H

Refer to Table 12-1

Name

Function

Setting value

CXD2720Q-2

Table 8-2. Coefficient RAM Setting Data (2/2)

Refer to 13. DSP Signal Flow regarding the names.

Address

44H

45H

47H

49H

4AH

4BH

4CH

4DH

51H

52H

53H

54H

55H

56H

57H

58H

59H

5AH

60H

61H

62H

63H

64H

65H

66H

67H

68H

69H

6AH

6BH

Tdo

Kre

Tre

Krd

Kfb

HCa1

HCa0

HCb

KdryL

KdryR

Keff

KLm

KRm

KLmc

KRmc

KLo

KRo

Kmut

IIR1a1

IIR1a0

IIR1b

IIR2a1

IIR2a0

IIR2b

IIR3a1

IIR3a0

IIR3b

IIR4a1

IIR4a0

IIR4b

Microphone echo delay amount

Microphone echo read tap volume

Microphone echo read tap address

Microphone echo input sound mix

Microphone echo reverberation sound mix

Microphone echo high cut

Microphone input direct sound Lch mix

Microphone input direct sound Rch mix

Microphone input echo mix

Key control Lch data

Lch mix

Key control Rch data

Rch mix

Key control Rch data

Lch mix

Key control Lch data

Rch mix

System volume Lch

System volume Rch

Fade in/out Lch and Rch

Pitch control input IIR_1 coefficient

Pitch control input IIR_2 coefficient

IIR_3 coefficient

IIR_4 coefficient

Refer to Table 12-1

Refer to Table 12-2

Refer to Table 11-1

Refer to Table 12-1

Refer to Table 14-2

Refer to Table 12-1

Refer to Table 14-5

Name

Function

Setting value

CXD2720Q-2

10. Key Controller Setting

[Relevant coefficients] nRpR (address = 1DH), nRpR_R (addresas = 1EH), Kp (address = 1FH),

Ks (address = 2EH)

(1) Key Controller Pitch Ratio

nRpR (D15,.....,D2) is a 2's complement format with a decimal point between D14 and D13, and sets the

desired pitch ratio directly. (VnRpR has the same type of setting as nRpR.)

nRpR =

n14

n = 2

The expression range for the pitch ratio is: 2.0

nRpR

2.0 2

but for practical use it is: 0.5

nRpR

1.0

or ±1 octave.

Use within a range of ± half an octave is recommended for quality of sound, although it depends on the aim

and the source.

Also, the algorithm is such that allophones will not be generated even when nRpR setting value is changed.

This applies to nRpR_R (Rch pitch ratio).

(2) L/R Common Setting and L/R Independent Setting of Pitch Ratio

The pitch ratio value can be set commonly or independently for Lch and Rch. It is recommended that the

common value be set when the key controller is used as the music key controller, and the independent values

be set when it is used as the voice effect.

Kp (address = 1FH) is used to switch the settings of the common value and independent values.

The common value is set when Kp is 8000H. nRpR (address = 1DH) is valid, and nRpR_R (address = 1EH)

setting value is invalid for both Lch and Rch in the pitch ratio.

The independent values are set when Kp is 0000H. nRPR is valid for Lch, and nRpR_R is valid for Rch in the

pitch ratio.

(3) Notes on Key Controller OFF

The pitch does not change when nRpR and nRpR_R are set to 0000H (OFF) when the key controller is OFF,

but depending on the internal state during OFF, there is no guarantee that the input value will be output as is.

During OFF, after setting nRpR and nRpR_R to 0000H (OFF), set the pitch control section to through state.

CXD2720Q-2

(4) Examples of Key Controller Setting

Examples of pitch ratio setting are illustrated below.

nRpR setting values are hexadecimal notation with D15 as MSB and D2 as LSB for a total of 14 bits.

(D1 and D0 can be optional data.)

CENT

+50

+100

+150

+200

+250

+300

+350

+400

+450

+500

+550

+600

+650

+700

+750

+800

+850

+900

+950

+1000

+1050

+1100

+1150

+1200

0000H

01E0H

03CEH

05CAH

07D6H

09F1H

0C1BH

0E56H

10A2H

12FFH

156EH

17EEH

1A82H

1D29H

1FE4H

22B3H

2597H

2892H

2BA2H

2EC9H

3208H

3560H

38D0H

3C5BH

4000H

100

150

200

250

300

350

400

450

500

550

600

650

700

750

800

850

900

950

1000

1050

1100

1150

1200

0000H

FE2EH

FC69H

FAB1H

F905H

F765H

F5D2H

F44AH

F2CCH

F15AH

EFF3H

EE95H

ED42H

EBF8H

EAB8H

E980H

E852H

E72CH

E60EH

E4F9H

E3ECH

E2E6H

E1E8H

E0F1H

E000H

nPpR, nRpR_R

CENT

nPpR, nRpR_R

Table 10-1. Pitch Ratio Setting Examples

The numeric representation format for pitch ratio here is:

nRpR =

n14

n = 2

The numeric representation range is: 2.0

nRpR

2.0 2

Also, the relationship formula with music word cent value C is:

nRpR = 2 1, C = 1200 log

[nRpR + 1] [cent]

The semitone at average ratio is 100 [cent].

1200

CXD2720Q-2

12. Input/Output Level Settings

[Relevant coefficients] Ki (address = 00H), KisLm (address = 0FH), KisRc (address = 10H),

KiaLm (address = 11H), KiaRc (address = 12H), KisRm (address = 13H),

KisLc (address = 14H), KiaRm (address = 15H), KiaLc (address = 16H),

Kre (address = 45H), Krd (address = 49H), Kfb (address = 4AH),

KLf (address = 3CH), KRf (address = 3DH), KLpc (address = 3EH),

KRpc (address = 3FH), KLpt (address = 40H), KRpt (address = 41H),

KdryE (address = 42H), KdryL (address = 51H), KdryR (address = 52H),

Keff (address = 53H), KLm (address = 54H), KRm (address = 55H),

KLmc (address = 56H), KRmc (address = 57H), KLo (address = 58H),

KRo (address = 59H), Kmut (address = 5AH)

The input/output levels and volumes are 2's complement format with a decimal point between D15 and D14,

and hexadecimal notation with D15 as MSB and D0 as LSB.

The coefficient and level relationships are as follows.

D15 to D0

8000H

FFFFH

0000H

0dB

90.31dB

Level

D15 to D0

8000H

FFFFH

0000H

+12.04dB

78.27dB

Level

Table 12-1. Input/Output Level Settings

(other than Kre)

Table 12-2. Input/Output Level Settings

(Kre)

The input/output levels for 8001H to FFFEH are determined by the following formulas.

(Coefficient value) = [ (1)

D15 +

n15

]

(1) for other than Kre

n = 0

(Coefficient value) = [ (1)

D15 +

n15

]

(4) for Kre

n = 0

Input/output level = 20log [coefficient value] dB

D15 to D0 are negative values, but the calculation is (1)

(D15 to D0).

Kmut is the coefficient of the soft mute.

This approaches the specified value approximately every 45µs.

For example, when the output with its level of 0dB (8000H) is set to OFF (0000H), it takes approximately

1.49s to change from 8000H to 0000H.

CXD2720Q-2

I
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2

13. DSP Signal Flow

Refer to the coefficient RAM setting for information on each coefficient.

CXD2720Q-2

14. Filter Coefficient Table

[Relevant coefficients] DC1a1 (address = 05H), DC1a0 (address = 06H), DC1b (address = 07H),

DC2a1 (address = 08H), DC2a0 (address = 09H), DC2b (address = 0AH),

PEQa (address = 0BH), PEQb1 (address = 0CH), PEQb2 (address = 0DH),

PEQg (address = 0EH), HCa1 (address = 4BH), HCa0 (address = 4CH),

HCb (address = 4DH), IIR

b (address = 62, 65, 68, 6BH),

IIR

a1 (address = 60, 63, 66, 69H), IIR

a0 (address = 61, 64, 67, 6AH)

The cut-off frequencies and PEQ gain, Q, and center frequency settings for each signal flow filter are shown in

Tables 14-1 (1) to 14-5 (3).

Note) · If the above setting values are changed during DSP operation, the output level becomes unstable for

several 1/fs.

· The coefficients differ depending on fs used. Please inquire with regard to use at fs other than this

value.

(1) DC Cut1 for Accompaniment/ DC Cut2 for Voice

Cut-off
frequency (Hz)

20
30
40
50
60
70
80
90

100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260

7FD1

7FBA

7FA2
7F8B

7F74

7F5D

7F46

7F2F

7F18
7F01

7EEA

7ED3

7EBC

7EA5
7E8E

7E77
7E61

7E4A

7E33

7E1C

7E06

7DEF
7DD9
7DC2

7DAC

270
280
290
300
310
320
330
340
350
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500

OFF

7D95

7D7F

7D68
7D52

7D3B

7D25

7D0F
7CF8

7CE2

7CCC

7CB6
7CA0
7C8A

7C73

7C5D

7C47
7C31

7C1B

7C05

7BEF

7BDA

7BC4

7BAE

7B98

0000

DC1a1
DC2a1

802F

8046

805E

8075

808C

80A3

80BA

80D1

80E8
80FF

8116

812D

8144

815B

8172
8189

819F

81B6

81CD

81E4

81FA

8211
8227

823E

8254

DC1a0
DC2a0

7FA2

7F74
7F45
7F17

7EE9

7EBA

7E8C

7E5E

7E30
7E02

7DD4

7DA6

7D78

7D4B

7D1D
7CEF
7CC2

7C94
7C67
7C39

7C0C
7BDF

7BB2

7B85
7B58

DC1b
DC2b

Cut-off
frequency (Hz)

DC1a1
DC2a1

826B

8281
8298

82AE

82C5

82DB

82F1

8308

831E

8334

834A

8360
8376

838D

83A3
83B9

83CF

83E5

83FB

8411
8426

843C

8452
8468
8000

DC1a0
DC2a0

7B2B

7AFE
7AD1

7AA4

7A77

7A4B
7A1E

79F1

79C5

7998

796C

7940
7914

78E7

78BB

788F

7863
7837

780B

77DF

77B4

7788

775C

7731
0000

DC1b
DC2b

Table 14-1 (1). Coefficients of DC Cut1 for Accompaniment / DC Cut2 for Voice (fs = 44.1kHz)

CXD2720Q-2

Cut-off
frequency (Hz)

20
30
40
50
60
70
80
90

100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260

7FD5
7FBF

7FAA

7F95

7F7F

7F6A

7F55
7F40

7F2A

7F15
7F00

7EEB

7ED6
7EC1

7EAC

7E97
7E82

7E6D

7E58
7E43

7E2E
7E1A

7E05

7DF0

7DDB

270
280
290
300
310
320
330
340
350
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500

OFF

7DC6

7DB2

7D9D

7D88
7D74

7D5F

7D4B

7D36
7D22

7D0D

7CF9

7CE4

7CD0

7CBB

7CA7

7C93

7C7E
7C6A

7C56
7C42

7C2D

7C19
7C05
7BF1

0000

DC1a1
DC2a1

802B

8041
8056

806B

8081
8096

80AB

80C0
80D6

80EB

8100
8115

812A

813F

8154
8169

817E

8193

81A8

81BD

81D2

81E6

81FB

8210
8225

DC1a0
DC2a0

7FAA

7F7F

7F54

7F2A

7EFF

7ED5

7EAA

7E80
7E55

7E2B

7E01

7DD7

7DAC

7D82
7D58

7D2E

7D04

7CDA

7CB1

7C87

7C5D

7C34

7C0A

7BE0
7BB7

DC1b
DC2b

Cut-off
frequency (Hz)

DC1a1
DC2a1

823A
824E

8263
8278

828C

82A1
82B5

82CA
82DE

82F3

8307

831C

8330
8345
8359

836D

8382
8396

83AA
83BE

83D3

83E7

83FB

840F

8000

DC1a0
DC2a0

7B8D

7B64

7B3B

7B11

7AE8

7ABF

7A96

7A6D

7A44

7A1B

79F2

79C9

79A0

7977

794E

7926

78FD

78D5

78AC

7884

785B

7833

780A
77E2

0000

DC1b
DC2b

Table 14-1 (2). Coefficients of DC Cut1 for Accompaniment / DC Cut2 for Voice (fs = 48kHz)

Cut-off
frequency (Hz)

20
30
40
50
60
70
80
90

100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
250
260

7FBF

7F9F
7F7F
7F5F

7F40
7F20
7F00

7EE0

7EC1

7EA1

7E82
7E63
7E43
7E24
7E05

7DE6

7DC6

7DA7

7D88
7D69

7D4B

7D2C
7D0D

7CEE

7CD0

270
280
290
300
310
320
330
340
350
360
370
380
390
400
410
420
430
440
450
460
470
480
490
500

OFF

7CB1

7C93
7C74
7C56
7C37
7C19

7BFB

7BDD

7BBF

7BA0

7B82
7B64
7B47
7B29

7B0B

7AED

7ACF

7AB2

7A94
7A77
7A59

7A3C

7A1E

7A01

0000

DC1a1
DC2a1

8041
8061
8081

80A1

80C0

80E0

8100
8120

813F
815F

817E

819D

81BD

81DC

81FB

821A
823A

8259
8278
8297

82B5

82D4

82F3

8312
8330

DC1a0
DC2a0

7F7F
7F3F

7EFF

7EBF

7E80
7E40
7E01

7DC1

7D82
7D43
7D04

7CC6

7C87
7C48

7C0A

7BCC

7B8D

7B4F

7B11

7AD3

7A96
7A58

7A1B

79DD

79A0

DC1b
DC2b

Cut-off
frequency (Hz)

DC1a1
DC2a1

834F

836D
838C

83AA

83C9

83E7

8405
8423
8441
8460

847E

849C

84B9

84D7

84F5

8513
8531

854E

856C

8589

85A7

85C4

85E2
85FF

8000

DC1a0
DC2a0

7963
7926

78E9

78AC

786F

7833

77F6

77BA

777E

7741
7705

76C9

768E

7652
7616

75DB

759F

7564
7529

74EE

74B3

7478

743D

7403
0000

DC1b
DC2b

Table 14-1 (3). Coefficients of DC Cut1 for Accompaniment / DC Cut2 for Voice (fs = 32kHz)

CXD2720Q-2

(2) Microphone Echo High Cut

Cut-off
frequency (Hz)

1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
2300
2400
2500
2600
2700
2800
2900
3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500

100E

1177

12D8

1432
1586

16D3

181A
195B
1A97

1BCE

1CFF
1E2C

1F55

2079
2199

22B5

23CE

24E3

25F4

2703

280E

2917

2A1D

2B21

2C22
2D21

2E1D

2F18

3011
3108

31FD

32F1

33E3

34D5
35C5

36B3
37A1
388E
397B
3A66
3B51

3C3B

3D26
3E0F
3EF9
3FE2

EFF2
EE89

ED28

EBCE

EA7A

E92D

E7E6
E6A5

E569
E432
E301

E1D4

E0AB

DF87

DE67

DD4B

DC32

DB1D
DA0C

D8FD

D7F2

D6E9
D5E3

D4DF

D3DE

D2DF

D1E3
D0E8

CFEF

CEF8

CE03

CD0F

CC1D

CB2B
CA3B

C94D

C85F

C772
C685

C59A

C4AF
C3C5

C2DA

C1F1

C107

C01E

5FE2

SD11

SA4E

579A

54F3

5259

4FCB

4D48

4AD0

4863
4600

43A6

4155

3F0D

3CCD

3A94

3863
3639
3416

31F9

2FE2

2DD0

2BC4
29BD

27BB

25BD

23C4

21CF

1FDD

1DEF

1C04

1A1C

1838
1655
1475
1298

10BC

0EE2

0D09

0B32

095C

0788

05B3
03E0

020D

003A

5600
5700
5800
5900
6000
6100
6200
6300
6400
6500
6600
6700
6800
6900
7000
7100
7200
7300
7400
7500
7600
7700
7800
7900
8000
8100
8200
8300
8400
8500
8600
8700
8800
8900
9000
9100
9200
9300
9400
9500
9600
9700
9800
9900

10000

OFF

40CC

41B5

429F

4389
4173

455E
464A

4136
4822
4910

49FF

4AEE
4BDF
4CD1
4DC5
4EBA

4FB0

50A9
51A3

529F

539D

549E
55A1
56A6

57AE

58B9

59C7

5AD8

5BEC

5D03
5E1F
5F3E

6061
6188

62B4
63E4
651A

6654
6794

68DA

6A25
6B77

6CD0

6E2F

6F96

0000

BF34

BE4B

BD61
BC77

BB8D

BAA2

B9B6

B8CA
B7DE

B6F0

B601
B512
B421

B32F

B23B

B146
B050

AF57

AE5D

AD61
AC63

AB62

AA5F

A95A

A852
A747
A639
A528
A414

A2FD

A1E1

A0C2

9F9F
9E78

9D4C
9C1C

9AE6

99AC

986C

9726

95DB

9489
9330

91D1

906A

8000

FE68

FC95

FAC2

F8EE

F719
F543

F36C

F194

EFBB
EDE0

EC02

EA23

E841

E65D

E476

E28C

E09F

DEAE

DCBA

DAC1

D8C5
D6C4

D4BE

D2B3
D0A3

CE8E

CC72

CA50

C828

C5F9

C3C2

C184

BF3E

BCEF

BA98

B837

B5CC

B357

B0D7

AE4C

ABB5

A911
A660

A3A1

A0D4

0000

HCa1

HCa0

HCb

Cut-off
frequency (Hz)

HCa1

HCa0

HCb

Table 14-2 (1). Coefficients of Microphone Echo High Cut (fs = 44.1kHz)

CXD2720Q-2

Cut-off
frequency (Hz)

0EE4

1035
1180

12C4

1403

153C

1670

179E

18C7

19EC
1B0C

1C28
1D40

1E53

1F63

2070
2179

227E

2381
2480

257D

2677

276E

2863
2956

2A46
2B34

2C20

2D0A

2DF3

2ED9
2FBE

30A2

3184
3265
3345
3423
3500

35DD

36B8

3793

386C

3945

3A1E

3AF6

3BCE

F11C

EFCB

EE80

ED3C
EBFD

EAC4

E990
E862
E739
E614

E4F4

E3D8
E2C0

EIAD

E09D

DF90

DE87

DD82

DC7F

DB80
DA83

D989
D892

D79D

D6AA
D5BA

D4CC

D3E0

D2F6

D20D

D127
D042

CF5E

CE7C
CD9B

CCBB

CBDD

CB00
CA23

C948

C86D

C794

C6BB

C5E2
C50A

C432

6237

5F95

5CFF

5A76

57F8

5586

531F

50C3

4E70

4C26

49E6

47AE

457F

4358
4138

3F1F

3D0D

3B02

38FD

36FE

3504
3311
3122

2F38

2D53

2B73

2996

27BE
25EA

2419

224C

2082

1EBA

1CF6

1B35

1975

17B9

15FE

1445

128F

10D9

0F26

0D74

0BC2

0A12

0863

10000

OFF

3CA5

3D7C

3E52

3F29

4000

40D6

41AD

4283

435A

4431
4509

45E1

46BA

4793

486C

4947

4A22

4AFF

4BDC

4CBA

4D9A

4E7B
4F5D

5041
5126

520C

52F5

53DF

54CB

SSB9

56A9

579C

5891
5988

5A82

5B7F

5C7E

5D81

5E86
5F8F

609C

61AC

62BF
63D7

64F3

0000

C35B

C284

C1AE

C0D7

C000

BF2A

BE53

BD7D

BCA6

BBCF

BAF7
BA1F

B946

B86D

B794

B6B9

B5DE

B501
B424
B346
B266
B185

B0A3

AFBF

AEDA

ADF4

AD0B

AC21

AB35
AA47

A957
A864

A76F

A678

A57E

A481
A382

A27F

A17A

A071

9F64

9E54

9D41
9C29

9B0D

8000

06B5

0507

035A

01AC

0000

FE54

FCA6

FAF9

F94B

F79D

F5EE

F43E

F28C

F0DA

EF27

ED71

EBBB

EA02

E847

E68B

E4CB

E30A

E146

DF7E

DDB4

DBE7

DA16

D842

D66A

D18D

D2AD

D0C8

CEDE

CCEF
CAFC

C902
C703

C4FE

C2F3

C0E1

BEC8
BCA8

BA81

B852

B61A

0000

HCa1

HCa0

HCb

Cut-off
frequency (Hz)

HCa1

HCa0

HCb

Table 14-2 (2). Coefficients of Microphone Echo High Cut (fs = 48kHz)

CXD2720Q-2

Cut-off
frequency (Hz)

153C

1707

18C7

1A7D

1C28

1DCA

1F63
20F5

227E

2401

257D

26F3

2863

29CE

2B34

2C95

2DF3
2F4C

30A2

31F5

3345
3492

35DD

3725

386C

39B2

3AF6
3C39

3D7C
3EBE

4000
4141
4283

43C6

4509

464D

4793

48DA

4A22

4B6D

4CBA

4E0A
4F5D

50B3

520C

536A

EAC4

E8F9

E739
E583

E3D8

E236

E09D

DF0B
DD82

DBFF

DA83

D90D
D79D

D632

D4CC

D36B

D20D

D0B4

CF5E

CE0B

CCBB

CB6E

CA23

C8DB

C794

C64E
C50A

C3C7

C284
C142
C000

BEBF

BD7D

BC3A

BAF7

B9B3

B86D

B726

B5DE

B493
B346

B1F6

B0A3

AF4D
ADF4

AC96

5586

51F0

4E70
4B05

47AE

446A

4138

3E15
3B02

37FD

3504
3219

2F38

2C62

2996

26D4

2419
2166

1EBA

1C15

1975

16DB

1445

11B4

0F26

0C9B

0A12

078C

0507
0283
0000

FD7D

FAF9

F874

F5EE

F365

F0DA

EE4C

EBBB

E925

E68B

E3EB

E146

DE9A
DBE7

D92C

10000

OFF

54CB

5631

579C
590C

5A82

5BFE

5D81
5F0A
609C

6235

63D7

6582
6738

68F8

6AC3
6C9B

6E7F

7072
7274
7486

76A9

78DF

7B29

7D88
7FFF

8290

853C

8805

8AEF

8DFB

912F

948B

9816

9BD3

9FC8

A3FA

A870

AD31

B247

B7BC
BD9B

C3F3

CAD3

D250

DA82

0000

AB35

A9CF

A864

A6F4

A57E

A402

A27F
A0F6

9F64

9DCB

9C29

9A7E

98C8

9708

953D

9365
9181

8F8E

8D8C

8B7A

8957
8721

84D7

8278
8001

7D70

7AC4

77FB

7511
7205

6ED1

6B75

67EA

642D

6038

5C06

5790

52CF

4DB9

4844
4265

3C0D

352D

2DB0

257E

8000

D66A
D39E

D0C8

CDE7

CAFC

C803

C4FE

C1EB
BEC8

BB96

B852

B4FB

B190

AE10

AA7A

A6CA

A301

9F1C

9B18

96F4

92AE

8E42

89AE

84EF

8001

7AE0

7588

6FF5
6A22

6409

5DA2

56E9

4FD3

4859
4070

380C

2F20

259D

1B71

1088

04CA

F81A

EA59

DB5F

CAFC

0000

HCa1

HCa0

HCb

Cut-off
frequency (Hz)

HCa1

HCa0

HCb

Table 14-2 (3). Coefficients of Microphone Echo High Cut (fs = 32kHz)

CXD2720Q-2

(3) PEQ for Voice

Center
frequency (Hz)

250.0
280.6
315.0
353.6
396.9
445.4
500.0
561.2
630.0
707.1
793.7
890.9

1000.0
1122.5
1259.9
1414.2
1587.4
1781.8
2000.0
2244.9
2519.8
2828.4
3174.8
3563.6
4000.0
4489.8
5039.7
5656.9
6349.6
7127.2
8000.0

023D

0282

02CF

0325
0385

03F0

0467

04EC

0580
0624

06DB

07A6

0886

097E
0A91

0BC0

0D0D

0E7C

100E

11C7

13A8
15B5

17F1

1A5E

1CFF

1FD8

22ED

2642

29DB

2DC1

31FD

7DAE

7D64
7D10

7CB2

7C47

7BCF

7B48

7AAE

7A01

793D

785E

7762
7643

74FD

738B
71E5

7004

6DE0
6B6D

68A1
656E

61C6
5D97

58CF

535A

4D24

4617

3E23
353B

2B5C

2097

847B

8505

859F

864B
870B
87E1

88CF

89D9

8B01

8C4A
8DB7

8F4D

910E

92FE

9524
9781

9A1C

9CFA

A01E

A38F

A752

AB6C

AFE4

B4BE

BA00

BFB2

C5DC

CC85

D3B8
DB84

E3FC

PEQa

PEQb1

PEQb2

Table 14-3 (1). Coefficients of PEQ for Voice (fs = 44.1kHz)

Gain

(dB)

0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5

10.0
10.5
11.0
11.5
12.0

0000

01E5
03E7

0608
0849

0AAC

0D33
0FE1

12B7
15B8
18E7

1C46

1FD9

23A1
27A3

2BE2

3061
3524

3A30

3F88

4531

4B30
518A

5844

5F64

PEQg

Table 14-4.

CXD2720Q-2

Center
frequency (Hz)

250.0
280.6
315.0
353.6
396.9
445.4
500.0
561.2
630.0
707.1
793.7
890.9

1000.0
1122.5
1259.9
1414.2
1587.4
1781.8
2000.0
2244.9
2519.8
2828.4
3174.8
3563.6
4000.0
4489.8
5039.7
5656.9
6349.6
7127.2
8000.0

020F
024F

0295

02E5

033D

03A0
040E

0489
0512

05AA

0653

070F

07DF

08C6
09C5

0ADF

0C16

0D6C

0EE4

1080
1243
1430
1649
1892

1B0C

1DBC

20A5

23CA

2730

2ADE

2ED9

7DDF

7D9B
7D4E

7CF8

7C97
7C29

7BAD

7B21
7A82

79CF

7904

781E

7719

75F0
749F

7320

716B

6F79

6D41

6AB8

67D2

6181

60B6

5C61
576C
51C6

4B58

4410

3BDC

32B1

2893

8420

849F

852C

85CB

867C

8742

881E

8914

8A25
8B55

8CA8

8E1F

8FC0

918D

938B

95BF
982D

9AD9

9DC9

A101
A488
A861

AC94

B125

B61A

BB7A

C14B

C795

CE62

D5BD
DDB4

PEQa

PEQb1

PEQb2

Table 14-3 (2). Coefficients of PEQ for Voice

(fs = 48kHz)

250.0
280.6
315.0
353.6
396.9
445.4
500.0
561.2
630.0
707.1
793.7
890.9

1000.0
1122.5
1259.9
1414.2
1587.4
1781.8
2000.0
2244.9
2519.8
2828.4
3174.8
3563.6
4000.0
4489.8
5039.7
5656.9
6349.6
7127.2
8000.0

0311

036E

03D7

074B

04CD

055D
05FE

06B0

0776
0852
0945

0A51
0B79

0CC0

0E27

0FB1

1161
1339

153C
176D

19CF

1C64

1F30

2237

257D

2907

2CDB

3103
3589

3A80

3FFF

7CC8

7C60

7BEC

7B68

7AD2

7A2A

796B

7892

779D

7686

754A
73E2

7248
7075

6E61

6C01

694A

662F

62A2
5E93

59EF

54A3
4E99

47BF

4000

374E

2DA6

2312

17B5

0BDA

0000

8623

86DE

87AF

8898

899B

8ABC

8BFD

8D62

8EEE

90A5
928B
94A4

96F4

9981

9C4F

9F64

A2C3

A673

AA7A

AEDC

B39F

B8C9

BE62

C470

CAFC

D20F

D9B8

E207

EB14

F502

0000

Table 14-3 (3). Coefficients of PEQ for Voice

(fs = 32kHz)

Center
frequency (Hz)

PEQa

PEQb1

PEQb2

CXD2720Q-2

(4) First-Stage IIR Filter

Cut-off
frequency (Hz)

3000
3100
3200
3300
3400
3500
3600
3700
3800
3900
4000
4100
4200
4300
4400
4500
4600
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
6100
6200
6300
6400
6500
6600
6700
6800
6900
7000

16D3

1777

181A

18BB

195B

19FA

1A97
1B33

1BCE

1C67

1CFF

1D96

1E2C
1EC1

1F55

1FE7

2079
2109
2199
2228

22B5

2342

23CE

2459

24E3

256C

25F4

267C

2703
2789

280E

2893
2917

299A

2A1D

2A9F

2B21

2BA1

2C22

2CA1

2D21

IIR

E92D

E889

E7E6

E745

E6A5

E606
E569

E4CD

E432
E399
E301

E26A

E1D4

E13F

E0AB

E019

DF87

DEF7

DE67

DDD8

DD4B

DCBE

DC32

DBA7

DB1D

DA94

DA0C

D984

D8FD

D877

D7F2

D76D

D6E9

D666

D5E3

D561

D4DF

D45F

D3DE

D35F

D2DF

IIR

5259
5110

4FCB

4E88

4D48

4C0B
4AD0

4998
4863
4730
4600

44D2

43A6

427C

4155
4030

3F0D

3DEC
3CCD
3BAF

3A94
397B

3863

374D

3639
3527
3416
3306

31F9

30EC

2FE2

2ED8

2DD0
2CCA

2BC4
2AC0
29BD
28BC

27BB

26BC
25BD

IIR

96D4

9778

981B

98BC

995C
99FB

9A98
9B34

9BCF

9C68
9D00
9D97

9E2D
9EC2

9F56

9EF8

A07A
A10A
A19A

A229

A2B6

A343

A3CF

A45A
A4E4

A56D

A5F5

A67D

A704

A78A

A80F

A894
A918

A99B

AA1E

AAA0
AB22

ABA2

AC23

ACA2

AD22

IIR

96D4

9778

981B

98BC

995C
99FB

9A98
9B34

9BCF

9C68
9D00
9D97

9E2D
9EC2

9F56

9FE8

A07A
A10A
A19A

A229

A2B6

A343

A3CF

A45A
A4E4

A56D

A5F5

A67D

A704

A78A

A80F

A894
A918

A99B

AA1E
AAA0

AB22

ABA2

AC23

ACA2

AD22

IIR

5259
5110

4FCB

4E88

4D48

4C0B
4AD0

4998
4863
4730
4600

44D2

43A6

427C

4155
4030

3F0D

3DEC
3CCD
3BAF

3A94
397B

3863

374D

3639
3527
3416
3306

31F9

30EC

2FE2

2ED8

2DD0
2CCA

2BC4
2AC0
29BD
28BC

27BB

26BC
25BD

IIR

Cut-off
frequency (Hz)

7100
7200
7300
7400
7500
7600
7700
7800
7900
8000
8100
8200
8300
8400
8500
8600
8700
8800
8900
9000
9100
9200
9300
9400
9500
9600
9700
9800
9900

10000
10100
10200
10300
10400
10500
10600
10700
10800
10900
11000

OFF

2D9F

2E1D

2E9B

2F18
2F95

3011

308C

3108
3183

31FD

3277

32F1

336A
33E3

345C
34D5
354D
35C5
363C

36B3
372B
37A1

3818

388E

3905

397B

39F0

3A66

3ADC

3B51

3BC6
3C3B
3CB1

3D26

3D9A

3E0F

3E84

3EF9
3F6E
3FE2

0000

IIR

D261

D1E3

D165

D0E8
D06B

CFEF

CF74

CEF8
CE7D

CE03

CD89

CD0F

CC96
CC1D

CBA4
CB2B
CAB3
CA3B

C9C4
C94D
C8D5

C85F

C7E8

C772

C6FB

C685
C610

C59A

C524

C4AF

C43A

C3C5

C34F

C2DA

C266

C1F1

C17C

C107
C092

C01E

8000

IIR

24C0
23C4
22C9

21CF

20D5

1FDD

1EE6

1DEF

1CF9

1C04

1B10

1A1C

192A

1838
1746
1655
1565
1475
1386
1298

11A9

10BC
0FCF

0EE2
0DF5

0D09

0C1E

0B32
0A47

095C

0872
0788

069D

05B3

04CA

03E0

02F6

020D

0123

003A

0000

IIR

ADA0

AE1E

AE9C

AF19
AF96

B012

B08D

B109
B184

B1FE

B278

B2F2

B36B
B3E4

B45D
B4D6

B54E

B5C6
B63D

B6B4

B72C

B7A2

B819

B88F

B906

B97C

B9F1

BA67

BADD

BB52

BBC7

BC3C

BCB2

BD27

BD9B

BE10
BE85

BEFA

BF6F

BFE3

0000

IIR

ADA0

AE1E

AE9C

AF19
AF96

B012

B08D

B109
B184

B1FE

B278

B2F2

B36B
B3E4

B45D
B4D6

B54E

B5C6
B63D

B6B4

B72C

B7A2

B819

B88F

B906

B97C

B9F1

BA67

BADD

BB52

BBC7

BC3C

BCB2

BD27

BD9B

BE10
BE85

BEFA

BF6F

BFE3

8000

IIR

24C0
23C4
22C9

21CF

20D5

1FDD

1EE6

1DEF

1CF9

1C04

1B10

1A1C

192A

1838
1746
1655
1565
1475
1386
1298

11A9

10BC
0FCF

0EE2
0DF5

0D09

0C1E

0B32
0A47

095C

0872
0788

069D

05B3

04CA

03E0

02F6

020D

0123

003A

0000

IIR

Table 14-5 (1). Coefficients of First-Stage IIR Filter (fs = 44.1kHz)

Used as LPF

Used as HPF

Used as LPF

Used as HPF

CXD2720Q-2

Cut-off
frequency (Hz)

153C
15D6

1670
1707

179E

1833

18C7

195A

19EC
1A7D
1B0C

1B9B

1C28

1CB4

1D40

1DCA

1E53

1EDC

1F63

1FEA

2070

20F5

2179

21FC

227E

2300
2381
2401
2480

24FF

257D
25FA

2677

26F3

276E
27E9

2863

28DD

2956

29CE

2A46

IIR

EAC4

EA2A

E990

E8F9

E862

E7CD

E739

E6A6

E614
E583

E4F4

E465

E3D8
E34C
E2C0

E236

E1AD

E124

E09D

E016

DF90

DF0B

DE87
DE04

DD82
DD00

DC7F
DBFF

DB80
DB01
DA83
DA06

D989

D90D

D892
D817

D79D

D723

D6AA

D632

D5BA

IIR

5586
5452

531F
51F0

50C3

4F98

4E70

4D4A

4C26

4B05
49E6

48C9

47AE

4696

457F

446A

4358
4247
4138

402A
3F1F
3E15

3D0D

3C07

3B02

39FE

38FD
37FD

36FE

3600
3504

340A

3311
3219
3122

302D

2F38

2E45

2D53
2C62

2B73

IIR

953D
95D7

9671
9708

979F

9834

98C8

995B

99ED

9A7E

9B0D
9B9C

9C29

9CB5

9D41

9DCB

9E54

9EDD

9F64

9FEB

A071

A0F6

A17A

A1FD

A27F

A301
A382
A402
A481
A500

A57E

A5FB

A678

A6F4
A76F

A7EA

A864

A8DE

A957

A9CF

AA47

IIR

953D
95D7

9671
9708

979F

9834

98C8

995B

99ED

9A7E

9B0D
9B9C

9C29

9CB5

9D41

9DCB

9E54

9EDD

9F64

9FEB

A071

A0F6

A17A

A1FD

A27F

A301
A382
A402
A481
A500

A57E

A5FB

A678

A6F4
A76F

A7EA

A864

A8DE

A957

A9CF

AA47

IIR

5586
5452

531F
51F0

50C3

4F98

4E70

4D4A

4C26

4B05
49E6

48C9

47AE

4696

457F

446A

4358
4247
4138

402A
3F1F
3E15

3D0D

3C07

3B02

39FE

38FD
37FD

36FE

3600
3504

340A

3311
3219
3122

302D

2F38

2E45

2D53
2C62

2B73

IIR

Cut-off
frequency (Hz)

7100
7200
7300
7400
7500
7600
7700
7800
7900
8000
8100
8200
8300
8400
8500
8600
8700
8800
8900
9000
9100
9200
9300
9400
9500
9600
9700
9800
9900

10000
10100
10200
10300
10400
10500
10600
10700
10800
10900
11000

OFF

2ABD

2B34

2BAA

2C20
2C95
2D0A

2D7F
2DF3

2E66

2ED9

2F4C

2FBE

3030

30A2

3113
3184

31F5

3265

32D5

3345

33B4

3423
3492
3500

356E

35DD

364A
36B8

3725
3793
3800

386C
38D9

3945

39B2

3A1E
3A8A

3AF6

3B62

3BCE

0000

IIR

D543

D4CC

D456

D3E0
D36B

D2F6

D281

D20D

D19A

D127

D0B4

D042

CFD0
CF5E
CEED
CE7C

CE0B

CD9B
CD2B
CCBB
CC4C

CBDD
CB6E

CB00

CA92
CA23
C9B6

C948
C8DB

C86D

C800
C794
C727

C6BB

C64E
C5E2

C576

C50A
C49E

C432

8000

IIR

2A84

2996

28AA
27BE

26D4

25EA

2501
2419
2332

224C

2166
2082

1F9E

1EBA
1DD8

1CF6

1C15

1B35
1A55

1975
1897

17B9

16DB

15FE

1522
1445

136A

128F

11B4

10D9
0FFF

0F26

0E4D

0D74

0C9B
0BC2

0AEA

0A12
093B

0863
0000

IIR

AABE

AB35

ABAB

AC21
AC96

AD0B

AD80

ADF4

AE67

AEDA

AF4D
AFBF

B031

B0A3

B114
B185

B1F6

B266

B2D6

B346

B3B5

B424
B493
B501

B56F

B5DE

B64B
B6B9

B726
B794
B801

B86D

B8DA

B946

B9B3

BA1F

BA8B

BAF7

BB63

BBCF

0000

IIR

AABE

AB35

ABAB

AC21
AC96

AD0B

AD80

ADF4

AE67

AEDA

AF4D
AFBF

B031

B0A3

B114
B185

B1F6

B266

B2D6

B346

B3B5

B424
B493
B501

B56F

B5DE

B64B
B6B9

B726
B794
B801

B86D

B8DA

B946

B9B3

BA1F

BA8B

BAF7

BB63

BBCF

8000

IIR

2A84

2996

28AA
27BE

26D4

25EA

2501
2419
2332

224C

2166
2082

1F9E

1EBA
1DD8

1CF6

1C15

1B35
1A55

1975
1897

17B9

16DB

15FE

1522
1445

136A

128F

11B4

10D9
0FFF

0F26

0E4D

0D74

0C9B
0BC2

0AEA

0A12
093B

0863
0000

IIR

Table 14-5 (2). Coefficients of First-Stage IIR Filter (fs = 48kHz)

Used as LPF

Used as HPF

Used as LPF

Used as HPF

CXD2720Q-2

Cut-off
frequency (Hz)

1DCA

1E98

1F63

202D

20F5

21BA

227E

2341
2401

24C0
257D

2639

26F3

27AC

2863
2919

29CE

2A82
2B34

2BE5

2C95
2D45

2DF3
2EA0
2F4C

2FF8
30A2

314C

31F5

329D

3345

33EB

3492
3537

35DD

3681
3725

37C9
386C

390F

39B2

IIR

E236
E168

E09D

DFD3

DF0B

DE46

DD82

DCBF

DBFF

DB40
DA83

D9C7
D90D

D854

D79D

D6E7

D632

D57E

D4CC

D41B
D36B

D2BB

D20D

D160

D0B4

D008

CF5E

CEB4
CE0B

CD63

CCBB

CC15

CB6E

CAC9

CA23

C97F

C8DB

C837
C794

C6F1

C64E

IIR

446A

42CF

4138

3FA4

3E15

3C8A

3B02

397D

37FD

367F

3504

338D

3219

30A7

2F38

2DCC

2C62

2AFB

2996
2834

26D4

2575
2419

22BF

2166

200F

1EBA

1D67
1C15

1AC5

1975
1828

16DB

1590
1445

12FC

11B4

106C

0F26

0DE0
0C9B

IIR

9DCB

9E99

9F64

A02E

A0F6

A1BB

A27F

A342
A402

A4C1

A57E
A63A

A6F4

A7AD

A864

A91A

A9CF

AA83
AB35

ABE6

AC96
AD46

ADF4
AEA1
AF4D

AFF9
B0A3

B14D

B1F6

B29E

B346

B3EC

B493
B538

B5DE

B682
B726

B7CA

B86D

B910

B9B3

IIR

9DCB

9E99

9F64

A02E

A0F6

A1BB

A27F

A342
A402

A4C1

A57E
A63A

A6F4

A7AD

A864

A91A

A9CF

AA83
AB35

ABE6

AC96
AD46

ADF4
AEA1
AF4D

AFF9
B0A3

B14D

B1F6

B29E

B346

B3EC

B493
B538

B5DE

B682
B726

B7CA

B86D

B910

B9B3

IIR

446A

42CF

4138

3FA4

3E15

3C8A

3B02

397D

37FD

367F

3504

338D

3219

30A7

2F38

2DCC

2C62

2AFB

2996
2834

26D4

2575
2419

22BF

2166

200F

1EBA

1D67
1C15

1AC5

1975
1828

16DB

1590
1445

12FC

11B4

106C

0F26

0DE0
1C9B

IIR

Cut-off
frequency (Hz)

7100
7200
7300
7400
7500
7600
7700
7800
7900
8000
8100
8200
8300
8400
8500
8600
8700
8800
8900
9000
9100
9200
9300
9400
9500
9600
9700
9800
9900

10000
10100
10200
10300
10400
10500
10600
10700
10800
10900
11000

OFF

3A54

3AF6

3B98

3C39

3CDB
3D7C
3E1D
3EBE

3F5F

4000

40A0

4141

41E2

4283
4324

43C6

4467
4509

45AB

464D

46F0

4793
4836

48DA

497E
4A22

4AC8
4B6D

4C14

4CBA

4D62

4E0A
4EB3
4F5D

5007

50B3

515F

520C

52BA

536A

0000

IIR

C5AC
C50A

C468

C3C7

C325
C284

C1E3

C142

C0A1

C000
BF60

BEBF

BE1E

BD7D

BCDC

BC3A

BB99

BAF7

BA55
B9B3

B910

B86D

B7CA

B726
B682

B5DE

B538
B493

B3EC

B346

B29E

B1F6

B14D

B0A3
AFF9

AF4D
AEA1
ADF4

AD46
AC96

8000

IIR

0B56
0A12

08CF

078C

0649
0507

03C5

0283
0141
0000

FEBF

FD7D

FC3B

FAF9

F9B7

F874
F731

F5EE
F4AA

F365
F220

F0DA

EF94

EE4C

ED04
EBBB

EA70

E925

E7D8

E68B
E53B

E3EB

E299
E146

DFF1

DE9A

DD41

DBE7
DA8B

D92C

0000

IIR

BA55

BAF7

BB99

BC3A

BCDC

BD7D

BE1E

BEBF

BF60
C000

C0A1

C142

C1E3

C284
C325

C3C7

C468

C50A

C5AC

C64E

C6F1

C794
C837

C8DB

C97F

CA23

CAC9

CB6E

CC15

CCBB

CD63

CE0B
CEB4

CF5E

D008

D0B4

D160

D20D

D2BB

D36B

0000

IIR

BA55

BAF7

BB99

BC3A

BCDC

BD7D

BE1E

BEBF

BF60
C000

C0A1

C142

C1E3

C284
C325

C3C7

C468

C50A

C5AC

C64E

C6F1

C794
C837

C8DB

C97F

CA23

CAC9

CB6E

CC15

CCBB

CD63

CE0B
CEB4

CF5E

D008

D0B4

D160

D20D

D2BB

D36B

8000

IIR

0B56
0A12

08CF

078C

0649
0507

03C5

0283
0141
0000

FEBF

FD7D

FC3B

FAF9

F9B7

F874
F731

F5EE
F4AA

F365
F220

F0DA

EF94

EE4C

ED04
EBBB

EA70

E925

E7D8

E68B
E53B

E3EB

E299
E146

DFF1

DE9A

DD41

DBE7
DA8B

D92C

0000

IIR

Table 14-5 (3). Coefficients of First-Stage IIR Filter (fs = 32kHz)

Used as LPF

Used as HPF

Used as LPF

Used as HPF

CXD2720Q-2

Application Circuit

.
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I
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.
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.
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.
7

I
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.
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.
7

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1
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-
2

.
0

Application circuits shown are typical examples illustrating the operation of

the devices. Sony cannot assume responsibility for any problems arising out

of the use of these circuits or for any infringement of third party patent and

other right due to same.

Ð­Ð»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: CXD2720Q-2

ÐÐ»ÐµÐºÑ‚Ñ€Ð¾Ð½Ð½Ñ‹Ð¹ ÐºÐ¾Ð¼Ð¿Ð¾Ð½ÐµÐ½Ñ‚: CXD2720Q-2