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GS1501 View Datasheet(PDF) - Gennum -> Semtech

Part Name
Description
Manufacturer
GS1501 Datasheet PDF : 15 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
1.2 PIN DESCRIPTIONS (Continued)
PIN NUMBER
NAME
75, 74, 73
FF_STA[2:0]
76, 77, 80, 83,
84, 85, 86, 87,
88, 89
ANC_IN[9:0]
92
W_CLK
TIMING
Synchronous
wrt W_CLK
N/A
TYPE
Output
Input
Input
DESCRIPTION
Control Signal Output. FF_STA[2:0] is the FIFO status output to
indicate the content level of the internal FIFO.
FF_STA[2:0]=000: Error flag, FIFO is under run.
FF_STA[2:0]=001: FIFO is empty.
FF_STA[2:0]=010: FIFO is almost empty (32 bytes filled).
FF_STA[2:0]=011: FIFO is ready.
FF_STA[2:0]=100: FIFO is half full.
FF_STA[2:0]=101: FIFO is almost full (992 bytes filled).
FF_STA[2:0]=110: FIFO is full.
FF_STA[2:0]=111: Error flag, FIFO is over run.
When ANC_Y/C is high, FF_STA indicates the status of the
LUMA ANC data buffer. When ANC_Y/C is low, it indicates the
status of the CHROMA ANC data buffer. See timing diagrams
Figures 5 to 14 and Table 1.
ANC Data Input Bus. ANC data to be inserted into the video
stream is supplied via the ANC_IN[9:0] input data port.
ANC_IN[9] is the MSB (pin 76) and ANC_IN[0] is the LSB (pin
89). When FM_I/E=1, ANC data intended to be placed into the
current HANC region is written into the internal FIFO during the
time that the preceding active video region is passing through
the device. The device begins inserting ANC data stored in the
FIFO immediately after the line based CRC words regardless of
any other ANC data that may be present in the stream (i.e. the
device will over-write existing ANC data in the data stream).
Input Clock. Used to write information to the internal FIFO. On
the rising edge of W_CLK, externally supplied ANC data may
be written into the internal LUMA or CHROMA FIFO as
determined by ANC_Y/C.
6
GENNUM CORPORATION
52234 - 4
 

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