bt829bkrf ETC-unknow, bt829bkrf Datasheet - Page 16

• Manufacturer Part Number: bt829bkrf
• Description: Video Streamii Decoders
• Manufacturer: ETC-unknow

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1.0 Functional Description
1.1 Functional Overview
1.1.8 VBI Data Pass-Through
1.1.9 Closed Caption Decoding
1.1.10 I
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C Interface
The Bt829B/827B provides VBI data passthrough capability. The VBI region
ancillary data is captured by the video decoder and made available to the system
for subsequent software processing. The Bt829B/827B may operate in a VBI Line
Output mode, in which the VBI data is only made available during select lines.
This mode of operation is intended to enable capture of VBI lines containing
ancillary data as well as processing normal YCrCb video image data. In addition,
the Bt829B/827B supports a VBI Frame Output mode, in which every line in the
video signal is treated as if it was a vertical interval line and no image data is out-
put. This mode of operation is designed for use in still-frame capture/processing
applications.
The Bt829B and Bt827B provide a Closed Captioning (CC) and Extended Data
Services (EDS) decoder. Data presented to the video decoder on the CC and EDS
lines is decoded and made available to the system through the CC_DATA and
CCSTATUS registers.
The Bt829B/827B registers are accessed via a two-wire I
Bt829B/827B operates as a slave device. Serial clock and data lines, SCL and
SDA, transfer data from the bus master at a rate of 100 Kbits/s. Chip select and
reset signals are also available to select one of two possible Bt829B/827B devices
in the same system and to set the registers to their default values.
D829BDSA
VideoStream II Decoders
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C interface. The
Bt829B/827B