参数资料
型号: TB1308FG
元件分类: 信号分离
英文描述: SYNC SEPARATOR IC, PQFP48
封装: 10 X 14 MM, 0.80 MM PITCH, PLASTIC, QFP-48
文件页数: 4/33页
文件大小: 659K
代理商: TB1308FG
TB1305FG, TB1308FG
2006-07-03
12
Function Descriptions
Vertical sync separation for 1250i/50
When HV FREQ = 1000, the vertical sync separation for 1250i/50 is accomplished through the use of a special circuit.
The phase of the VD-out (pin 29) depends on the H-SYNC timing shown in the figure below. There is no VD-out when
there is no H-SYNC input.
In the manual sync processing mode (A-SYNC = OFF), use READ BUS functions, V-SYNC-W and H, V FORMAT (or H,
V FREQ DET) to detect 1250i/50.
NOTE: The VD-OUT’s tailing edge has a jitter. Use the leading edge only.
HD width
HD-OUT width is selectable by HD WIDTH, as below. HD WIDTH = 1 (NARROW) is recommended for the
1125/50p/60p format owing to crosstalk from HD-OUT to video signals so that spike noises on video signals will occur.
SYNC-IN
(Y-IN)
HD-OUT
(HD WIDTH=1)
HD-OUT
(HD WIDTH=0)
1.65us (typ)
0.65us (typ)
1125/60p signal
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