GS1500 Gennum Corporation, GS1500 Datasheet - Page 4

• Manufacturer Part Number: GS1500
• Description: Hd-linx (tm) THDTV Serial Digital Deformatter With Anc Fifos
• Manufacturer: Gennum Corporation

1.2 PIN DESCRIPTIONS
GENNUM CORPORATION
PIN NUMBER
94, 110, 116,
3, 20, 25, 38,
2, 4, 14, 19,
90, 93, 109,
24, 37, 46,
50, 58, 69,
79, 82, 91,
47, 51, 59,
68, 78, 81,
115, 127
128
10
11
12
1
5
6
7
8
9
CODE_PROTECT
FW_EN/DIS
PCLK_IN
TRS_Y/C
BP_DSC
WB_NI
NAME
BP_FR
MUTE
F_E/S
GND
V
DD
Synchronous
Synchronous
wrt PCLK_IN
synchronous
wrt PCLK_IN
synchronous
synchronous
synchronous
synchronous
synchronous
synchronous
TIMING
Non-
Non-
Non-
Non-
Non-
Non-
Non-
Power
TYPE
Input
Input
Input
Input
Input
Input
Input
Input
Input
GND
4
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.
Ground power supply connections.
Positive power supply connections.
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.
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.
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.
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.
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.
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.
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.
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.
DESCRIPTION
52233 - 3