參數(shù)資料
型號: BT849A
英文描述: Single-Chip Video Capture for PCI
中文描述: 單芯片的PCI視頻捕捉
文件頁數(shù): 81/141頁
文件大?。?/td> 1149K
代理商: BT849A
Brooktree
71
E
LECTRICAL
I
NTERFACES
General Purpose I/O Port
L848A_A
Bt848/848A/849A
Single-Chip Video Capture for PCI
Figure 32. Video Timing in SPI Mode
Notes: (1). HRESET precedes VRESET by two clock cycles at the beginning of fields 1, 3, 5 and 7 to facilitate external
field generation.
2. ACTIVE pin may be programmed to be composite ACTIVE or horizontal ACTIVE.
3. FIELD transitions with the end of horizontal active video defined by HDELAY and HACTIVE.
2–6
SCAN
LINES
HRESET
VRESET
HACTIVE
FIELD
VDELAY/2
SCAN
LINES
B
EGINNING
OF
FIELDS
1, 3, 5, 7
(1)
2–6
SCAN
LINES
HRESET
VRESET
HACTIVE
FIELD
VDELAY/2
SCAN
LINES
B
EGINNING
OF
FIELDS
2, 4, 6, 8
VACTIVE
VBISEL
VBISEL
VACTIVE
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