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): 120/141頁
文件大?。?/td> 1149K
代理商: BT849A
Bt848/848A/849A
Single-Chip Video Capture for PCI
Brooktree
110
C
ONTROL
R
EGISTER
D
EFINITIONS
Capture Control
L848A_A
Capture Control
Memory Mapped Location 0x0DC – (CAP_CTL)
VBI Packet Size
Memory Mapped Location 0x0E0 – (VBI_PACK_SIZE)
VBI Packet Size / Delay
Memory Mapped Location 0x0E4 – (VBI_PACK_DEL)
Bits
Type
Default
Name
Description
[7:5]
RW
000
Reserved
These bits should only be written with a logical zero.
[4]
RW
0
DITH_FRAME
0
1
= Dither matrix applied to consecutive lines in a field.
= Full frame mode.
[3]
RW
0
CAPTURE_VBI_ODD
A value of 1 enables VBI data to be captured into the FIFO
during the odd field.
[2]
RW
0
CAPTURE_VBI_EVEN
A value of 1 enables VBI data to be captured into the FIFO
during the even field.
[1]
RW
0
CAPTURE_ODD
A value of 1 enables odd capture, allows VDFC to write data
to FIFOs during the odd field.
[0]
RW
0
CAPTURE_EVEN
A value of 1 enables even capture, allows VDFC to write data
to FIFOs during the even field.
Bits
Type
Default
Name
Description
[7:0]
RW
0x00
VBI_PKT_LO
Lower 8 bits for the number of raw data DWORDS (four 8-bit sam-
ples) to capture while in VBI capture mode.
Bits
Type
Default
Name
Description
[7:2]
RW
000000
VBI_HDELAY
The number of CLKx1’s to delay from the trailing edge of HRESET
before starting VBI line capture.
[1]
RW
0
EXT_FRAME
A value of 1 extends the frame output capture region to include the
10 lines prior to the default VACTIVE region.
[0]
RW
0
VBI_PKT_HI
Upper bit for the number of raw data DWORDS (four 8-bit sam-
ples) to capture while in VBI capture mode.
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