bt848kpf ETC-unknow, bt848kpf Datasheet - Page 47

• Manufacturer Part Number: bt848kpf
• Description: Single-chip Video Capture For Pci
• Manufacturer: ETC-unknow

Bt848/848A/849A
Single-Chip Video Capture for PCI
Brooktree
®
region and includes all the horizontal blank/sync information in the data stream.
The data is vertically bound beginning at the first line during VACTIVE and ending
after a fixed number of packets. The data stream is packetized into a series of
256-DWORD blocks.
tured during each field. This is equivalent to 111,104 DWORDs for NTSC (434 *
256 DWORDS) and 166,400 DWORDs for PAL (650 * 256 DWORDs) per field.
The VBI frame capture region may be extended to include the 10 lines prior to the
default VACTIVE region by setting the EXT_FRAME register bit. VDELAY must
also be set to its minimum value of 2. The extended DWORD block size is 450
DWORD blocks for NTSC and 674 DWORD blocks for PAL.
CAPTURE_EVEN register bit is set and the COLOR_EVEN bit is set to raw
mode, and during the odd field when the CAPTURE_ODD register bit is set and
the COLOR_ODD bit is set to raw mode. The captured data stream is continuous
and not aligned with HSYNC.
In the VBI frame output mode, the VBI data capture occurs in the active video
A fixed number of DWORD blocks (434 for NTSC and 650 for PAL) are cap-
The VBI frame data capture occurs during the even field when the
L848A_A
F
UNCTIONAL
VBI Data Output Interface
D
ESCRIPTION
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