GENNUM CORPORATION P.O. Box 489, Stn. A, Burlington, Ontario, Canada L7R 3Y3
Tel. +1 (905) 632-2996 Fax. +1 (905) 632-5946 E-mail: info@gennum.com
www.gennum.com
Revision Date: November 2000
Document No. 522 - 33 - 00
PRELIMINARY DATA SHEET
G
S
1
500
FEATURES
SMPTE 292M compliant
standards detection/indication for SMPTE 292M levels
A/B,C,D/E,F,G/H,I,J/K,L/M
NRZI decoding and SMPTE descrambling with
BYPASS option
line CRC calculation, comparison
selectable line based CRC re-insertion
H, V, F timing reference signal (TRS) extraction
selectable flywheel for noise immune H, V, F extraction
selectable automatic switch line handling
selectable TRS and line number re-insertion
selectable active picture illegal code re-mapping
ANC data position indication
ANC data extraction via internal FIFOs
(1024 bytes on Y and C channels)
configurable FIFO LOAD pulse
20 bit 3.3V CMOS input data bus
optimized input interface to GS1545 or GS1540
single +3.3V power supply
5V tolerant I/O
APPLICATIONS
SMPTE 292M Serial Digital Interfaces.
DESCRIPTION
When interfaced to the Gennum GS1545 HDTV Equalizing
Receiver or GS1540 Non-Equalizing Receiver, the GS1500
performs the final conversion to word aligned data. The
device performs NRZI decoding and de-scrambling as per
SMPTE 292M and word-aligns to the incoming data stream.
Line based CRCs are calculated on the incoming data
stream and are compared against the CRCs embedded
within the data stream.
HVF timing information is extracted from the data stream. A
selectable internal HVF flywheel provides superior noise
immunity against TRS signal errors. The device also detects
and indicates the input video signal standard.
The GS1500 can detect and re-map illegal code words
contained within the active portion of the video signal. The
positions of the embedded ANC data are indicated and the
ANC data may be extracted and accessed by the user
through an internal FIFO interface. Prior to exiting the
device, TRS, Line Numbers and CRCs based on internal
calculations may be re-inserted into the data stream.
BLOCK DIAGRAM
ORDERING INFORMATION
PART NUMBER
PACKAGE
TEMPERATURE
GS1500-CQR
128 pin MQFP
0C to 70C
INPUT
BUFFER
DESCRAMBLE
FRAME
PCLK_IN
DATA_IN
[19:0]
WB_NI
BP_DSC
BP_FR
[H:V:F]
LN_ERR
SAV_ERR
EAV_ERR
VD_STD
[3:0]
LINE_CRC_ERR[Y:C]
CRC
CALCULATION
CRC
COMPARISON
CODE
PROTECT
ANC_OUT
[9:0]
ANC_DATA
[Y:C]
FF_STA
[2:0]
TRS_INS
LN_INS
CRC_INS
DATA_OUT
[19:10]
(LUMA)
DATA_OUT
[9:0]
(CHROMA)
TRS,
LNUM,
AND CRC
INSERTION
FW_EN/DIS
FAST_LOCK
RESET
TRS_Y/C
F_E/S
MUTE
EX/CP
ANC_Y/C
FM_I/E
R_CLK
ANC/DATA
REN
WEN
OEN
3
2
10
3
2
4
3
3
2
2
TRS DETECTION
FLYWHEEL
STANDARD
DETECTION
TRS
EXTRACTION
ILLEGAL CODE REMAPPING
ANC DATA DETECTION &
EXTRACTION FIFO'S
3
YCS_ERR
CCS_ERR
FFRST
FOEN
FIFO_L
2
2
2
2
HD-LINX
TM
GS1500
HDTV Serial Digital Deformatter
with ANC FIFOs
GENNUM CORPORATION
522 - 33 - 00
2
G
S
1
500
ABSOLUTE MAXIMUM RATINGS
PARAMETER
VALUE
Supply Voltage
-0.5V to +4.6V
Input Voltage Range (any input)
-0.5V < V
IN
< 5.5V
Operating Temperature Range
0
C
T
A
70
C
Storage Temperature Range
-40
C
T
S
125
C
Lead Temperature (soldering 10 seconds)
260
C
DC ELECTRICAL CHARACTERISTICS
V
DD
= 3.0 to 3.6V, T
A
= 0
C to 70
C, unless otherwise shown
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
Positive Supply Voltage
V
DD
3.0
3.3
3.6
V
Supply Current
DD
= 74.25MHz, T
A
= 25C
-
402
480
mA
Input Logic LOW Voltage
V
IL
I
LEAKAGE
< 10A
-
-
0.8
V
Input Logic HIGH Voltage
V
IH
I
LEAKAGE
< 10A
2.1
3.3
5.0
V
Output Logic LOW Voltage
V
OL
V
DD
= 3.0 to 3.6V, I
OL
= 4mA
-
0.2
0.4
V
Output Logic HIGH Voltage
V
OH
V
DD
= 3.0 to 3.6V, I
OH
= -4mA
2.6
-
-
V
AC ELECTRICAL CHARACTERISTICS
V
DD
= 3.0 to 3.6V, T
A
= 0
C to 70
C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
NOTES
Clock Input Frequency
HSCI
-
74.25
80
MHz
Also supports 74.25/1.001MHz
Input Data Setup Time
t
SU
2.5
-
-
ns
50% levels
Input Data Hold Time
t
IH
1.5
-
-
ns
50% levels
Input Clock Duty Cycle
40
-
60
%
Output Data Hold Time
t
OH
With 15pF load
2.0
-
-
ns
Note 3
Output Enable Time
t
OEN
With 15pF load
-
-
8
ns
Output Disable Time
t
ODIS
With 15pF load
-
-
9
ns
Output Data Delay Time
t
OD
With 15pF load
-
-
10
ns
Note 2
Output Data Rise/Fall Time
t
ROD
/t
FOD
With 15pF load
-
-
2.5
ns
20% to 80% levels
FIFO Input Data Setup Time
t
FSU
8.0
-
-
ns
Note 1
FIFO Input Data Hold Time
t
FIH
4.0
-
-
ns
Note 1
NOTES:
1. The following signals need to adhere to this timing: ANC_Y/C, REN, WEN, FFRST
2. Timing of the FF_STA[2:0] outputs may be greater than specified.
3. Output timing characteristics also apply to FIFO outputs.
GENNUM CORPORATION
522 - 33 - 00
3
G
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500
PIN CONNECTIONS
V
DD
GND
OEN
TN
FIFO_L
LINE_CRC_ERR_Y
LINE_CRC_ERR_C
VD_STD[0]
VD_STD[1]
VD_STD[2]
VD_STD[3]
ANC_DATA_C
ANC_DATA_Y
V
DD
GND
F
V
H
V
DD
GND
RESET
FAST_LOCK
CRC_INS
LN_INS
GND
TRS_INS
TRS_Y/C
WB_NI
BP_DSC
BP_FR
CODE_PROTECT
FW_EN/DIS
MUTE
F_E/S
GND
V
DD
GND
PCLK_IN
LN_ERR
SAV_ERR
EAV_ERR
V
DD
GND
TEST
YCS_ERR
CCS_ERR
FF_STA[0]
FF_STA[1]
FF_STA[2]
ANC_OUT[9]
ANC_OUT[8]
V
DD
GND
ANC_OUT[7]
V
DD
GND
ANC_OUT[6]
ANC_OUT[5]
ANC_OUT[4]
ANC_OUT[3]
ANC_OUT[2]
ANC_OUT[1]
ANC_OUT[0]
V
DD
GND
R_CLK
V
DD
GND
FOEN
FFRST
WEN
REN
ANC/DATA
FM_I/E
ANC_Y/C
EX/CP
D
A
T
A_OUT[19]
D
A
T
A_OUT[18]
D
A
T
A_OUT[17]
D
A
T
A_OUT[16]
D
A
T
A_OUT[15]
V
DD
GND
D
A
T
A_OUT[14]
D
A
T
A_OUT[13]
D
A
T
A_OUT[12]
D
A
T
A_OUT[11]
D
A
T
A_OUT[10]
D
A
T
A_OUT[9]
V
DD
GND
D
A
T
A_OUT[8]
D
A
T
A_OUT[7]
V
DD
GND
D
A
T
A_OUT[6]
D
A
T
A_OUT[5]
D
A
T
A_OUT[4]
D
A
T
A_OUT[3]
D
A
T
A_OUT[2]
D
A
T
A_OUT[1]
D
A
T
A_OUT[0]
D
A
T
A_IN[19]
D
A
T
A_IN[18]
D
A
T
A_IN[17]
D
A
T
A_IN[16]
D
A
T
A_IN[15]
D
A
T
A_IN[14]
V
DD
GND
D
A
T
A_IN[13]
D
A
T
A_IN[12]
D
A
T
A_IN[11]
D
A
T
A_IN[10]
V
DD
GND
D
A
T
A_IN[9]
D
A
T
A_IN[8]
D
A
T
A_IN[7]
D
A
T
A_IN[6]
D
A
T
A_IN[5]
D
A
T
A_IN[4]
D
A
T
A_IN[3]
D
A
T
A_IN[2]
D
A
T
A_IN[1]
D
A
T
A_IN[0]
V
DD
GND
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
GS1500
TOP
VIEW
GENNUM CORPORATION
522 - 33 - 00
4
G
S
1
500
PIN DESCRIPTIONS
NUMBER
SYMBOL
TIMING
TYPE
DESCRIPTION
1
PCLK_IN
Synchronous
wrt PCLK_IN
Input
Input Clock.
The device uses PCLK_IN for clocking the input data
stream into DATA_IN[19:0]. This clock is generated by the GS1545
or GS1540.
2, 4, 14, 19,
24, 37, 46, 50,
58, 69, 79, 82,
91, 94, 110,
116, 128
GND
GND
Ground power supply connections.
3, 20, 25, 38,
47, 51, 59, 68,
78, 81, 90, 93,
109, 115, 127
V
DD
Power
Positive power supply connections.
5
F_E/S
Non-
synchronous
Input
Control Signal Input.
Used to control where the FIFO_L signal is
generated. When F_E/S is high, the GS1500 generates FIFO_L
signal at EAV. When F_E/S is low, the GS1500 generates FIFO_L
signal at SAV. See Fig. 4 for timing information.
6
MUTE
Synchronous
wrt PCLK_IN
Input
Control Signal Input.
Used to enable or disable blanking of the
LUMA (DATA_OUT[19:10]) and CHROMA (DATA_OUT[9:0]). When
MUTE is low, the device sets the accompanying LUMA and
CHROMA data to their appropriate blanking levels. When MUTE is
high, the LUMA and CHROMA data streams pass through this
stage of the device unaltered.
7
FW_EN/DIS
Non-
synchronous
Input
Control Signal Input.
Used to enable or disable the internal flywheel.
When FW_EN/DIS is high, the internal flywheel is enabled. When
FW_EN/DIS is low, the internal fly-wheel is disabled.
8
CODE_PROTECT
Non-
synchronous
Input
Control Signal Input.
Used to enable or disable re-mapping of out-
of -range words contained in the active portion of the video signal.
When this signal is high, the device re-maps out-of-range words
contained within the active portion of the video signal into CCIR-601
compliant words. Values between 000-003 are re-mapped to 004.
Values between 3FC and 3FF are re-mapped to 3FB. When this
signal is low, out-of-range words in the active video region pass
through the device unaltered.
9
BP_FR
Non-
synchronous
Input
Control Signal Input.
Used to enable or disable word boundary
framing. When BP_FR is low, internal framing is enabled. When
BP_FR is high, internal framing is bypassed.
10
BP_DSC
Non-
synchronous
Input
Control Signal Input.
Used to enable or disable the SMPTE 292M
descrambler. When BP_DSC is low, the internal SMPTE 292M de-
scrambler is enabled. When BP_DSC is high, the internal SMPTE
292M de-scrambler is bypassed.
11
WB_NI
Non-
synchronous
Input
Control Signal Input.
Used to enable or disable noise immune
operation of the word boundary framer. When WB_NI is high, noise-
immune word boundary alignment is enabled. The device switches
to a new word boundary only when it has detected two consecutive
identical new TRS positions. When WB_NI is low, the device re-
aligns the word boundary position at every instance of a TRS.
12
TRS_Y/C
Non-
synchronous
Input
Control Signal Input.
Used to control whether LUMA or CHROMA
TRS ID's are detected and used. When TRS_Y/C is high, the device
detects and uses TRS signals embedded in the LUMA channel.
When TRS_Y/C is low, the device detects and uses TRS signals
embedded in the CHROMA channel.
GENNUM CORPORATION
522 - 33 - 00
5
G
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500
13
TRS_INS
Non-
synchronous
Input
Control Signal Input.
Used to enable or disable re-insertion of the
TRS into the data stream. When TRS_INS is high, the device re-
inserts TRS into the incoming data stream based on the internal
calculation. The original TRS packets are set to the blanking levels.
If the flywheel is enabled, TRS calculated by the flywheel is used for
insertion. When TRS_INS is low, the device will not re-insert TRS
even if errors in TRS signals are detected.
15
LN_INS
Non-
synchronous
Input
Control Signal Input.
Used to enable or disable re-insertion of the
line number into the data stream. When LN_INS is high, the device
re-inserts the line number into the incoming data stream based on
the internal calculation. The original line number packets are set to
the blanking levels. If the flywheel is enabled, the line number
calculated by the flywheel is used for insertion. When LN_INS is low,
the device will not re-insert the line number.
16
CRC_INS
Non-
synchronous
Input
Control Signal Input.
Used to enable or disable re-insertion of the
CRC into the data stream. When CRC_INS is high, the device is
enabled to re-insert line CRCs based on the internal calculation.
When CRC_INS is low, the device will not re-insert the CRCs.
17
FAST_LOCK
Synchronous
wrt PCLK_IN
Input
Control Signal Input.
Used to control the flywheel synchronization
when a switch line occurs. When a low to high transition occurs on
the FAST_LOCK signal, the internal flywheel will immediately re-
synchronize to the next valid EAV or SAV TRS in the incoming data
stream. See Fig. 5 for timing information.
18
RESET
Non-
synchronous
Input
Control Signal Input.
Used to reset the system state registers to their
default 720p parameters. When RESET is high, the fly wheel, TRS
Detection, and ANC Detection operate normally. When RESET is
low, the flywheel, TRS Detection, and ANC Detection are reset to the
720p parameters after a rising edge on PCLK_IN. The read and
write counters are not affected.
21
H
Synchronous
wrt PCLK_IN
Output
Control Signal Output.
This signal indicates the Horizontal blanking
period of the video signal. Refer to Fig. 2 for timing information of H
relative to DATA_OUT[19:10] and DATA_OUT[9:0], LUMA and
CHROMA respectively.
22
V
Synchronous
wrt PCLK_IN
Output
Control Signal Output.
This signal indicates the Vertical blanking
period of the video signal. Refer to Fig. 2 for timing information of V
relative to DATA_OUT[19:10] and DATA_OUT[9:0], LUMA and
CHROMA respectively.
23
F
Synchronous
wrt PCLK_IN
Output
Control Signal Output.
This signal indicates the ODD/EVEN field of
the video signal. Refer to Fig. 2 for timing information of F relative to
DATA_OUT[19:10] and DATA_OUT[9:0], LUMA and CHROMA
respectively. When locked and the input signal is of a progressive
scan nature, F stays low at all times.
26
ANC_DATA_Y
Synchronous
wrt PCLK_IN
Output
Control Signal Output.
This signal indicates the position of the
embedded ANC data in the outgoing LUMA (DATA_OUT [19:10])
data stream. ANC_DATA_Y goes high for the entire time that an
ANC_DATA packet is present in the LUMA (DATA_OUT[19:10]) data
stream whether it be in the active video area or the ANC area. Refer
to Fig. 17 for timing of ANC_DATA_Y relative to LUMA
(DATA_OUT[19:10]). During detection of ANC data, any errors in the
data count (DC) packet will consequently cause errors in the
duration of the flags. Bit errors in an ANC header will prevent the
packet from being detected.
PIN DESCRIPTIONS (Continued)
NUMBER
SYMBOL
TIMING
TYPE
DESCRIPTION
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