Datasheet > GS1501

GS1501

更新时间： 2025-07-27 04:19:51

品牌	Logo	应用领域
GENNUM		电视先进先出芯片
页数	文件大小	规格书
15页	185K
描述
HDTV Serial Digital Formatter with ANC FIFOs

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GS1501 数据手册

1.2 PIN DESCRIPTIONS

PIN NUMBER

NAME

PCLK_IN

GND

TIMING

Synchronous

N/A

TYPE

Input

DESCRIPTION

Parallel data clock input. 74.25MHz or 74.25/1.001MHz.

Ground. Ground power supply connections.

2, 4, 14, 19, 24,

37, 46, 50, 58,

69, 79, 82, 91,

94, 110, 116,

128

Ground

3, 18, 20, 25, 38,

47, 51, 59, 68,

78, 81, 90, 93,

99, 109, 115,

127

V_DD

N/A

Power

Input

Power. Positive power supply connections.

DET_TRS

Non-

synchronous

Control Signal Input. Used to enable or disable the detection of

the TRS signals embedded in the video stream. When DET

_TRS is high, the device detects the TRS signals embedded in

the input video stream and uses the detected HVF signals

instead of the external HVF signals. When DET _TRS is low,

TRS detection is disabled. The device uses the external

supplied HVF signals.

BLANK

GND

Synchronous

wrt PCLK_IN

Input

Control Signal Input. When BLANK is low, the device sets the

accompanying LUMA and CHROMA data to their appropriate

blanking levels. When BLANK is high, the LUMA and CHROMA

data streams pass through this stage of the device unaltered.

See Figure 3.

7, 17

N/A

This pin must be connected to GND for normal operation

CODE_PROTECT

Non-

synchronous

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.

RSTLN

BP_SC

Synchronous

wrt PCLK_IN

Input

Control Signal Input. Line number reset signal which must be

asserted once per frame at the beginning of the frame (for

example, on the falling edge of the F signal). A high to low

transition will reset the line number counter of the device to one

(1). See Figure 2 for timing.

Non-

synchronous

Control Signal Input. Used to enable or bypass the SMPTE292M

scrambler and NRZ(I) encoder. When BP_SC is low, the video

stream is scrambled according to SMPTE 292M and NRZ(I)

encoded. When BP_SC is high, the scrambler and NRZ(I)

encoder are by-passed.

SRST

Non-

synchronous

Input

Control Signal Input. Used to reset the SMPTE292M scrambler

and NRZI encoder. When SRST is low, the scrambler and

encoder operate normally. A low to high transition on SRST

causes the scrambler and encoder to reset.

TRS_Y/C

Non-

synchronous

Control Signal Input. Only used when DET_TRS is high. When

TRS_Y/C is high, the device detects and uses TRS signals

embedded in the LUMA (DATA_IN[19:10]) channel. When

TRS_Y/C is low, the device detects and uses TRS signals

embedded in the CHROMA (DATA_IN[9:0]) channel.

GENNUM CORPORATION

52234 - 4

1 2 345 6 7...15

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