Texas Instruments TMS320C64x DSP Network Card User Manual


 
Video Port FIFO
Overview1-8 SPRU629
For Y/C video capture, the FIFO is configured as a single channel split into sep-
arate Y, Cb, and Cr buffers with separate write pointers and read registers
(YSRCA, CBSRCA, and CRSRCA). Figure 14 shows how Y data is received
on the VDIN[90] half of the bus and Cb/Cr data is received on the
VDIN[1910] half of the bus and demultiplexed into the Cb and Cr buffers.
Figure 14. Y/C Video Capture FIFO Configuration
VDIN[1910]
Cr Buffer (1280 bytes)
Cb Buffer (1280 bytes)
8/10
8/10
64
64
CRSRCA
CBSRCA
Y Buffer (2560 bytes)
VDIN[90]
8/10
64
Capture FIFO
YSRCA