Video Input/Output Daughter Card
27
UG235 (v1.2.1) October 31, 2007
Component Video Input and Output
R
synchronization signals and field indicator.
details the connections from the
ADV7403 video decoder device to the XC2VP4 Xilinx FPGA.
Component Video Output
Compliant digital video streams are feed into the ADV7321 device by the Xilinx XC2VP4
FPGA, where it is converted to analog RGB or YPrPb using 12-bit DACs. The ADV7321
device, from Analog Devices, produces fully compliant SD/HD analog output signals,
which are then conditioned and drive the RCA type jacks. The Analog Devices ADV7321 is
used to generation all analog component RGB or YPrPb video output signals.
a block diagram of the component video output system on the VIODC board.
FPGA to ADV7321 Connection
The Xilinx XC2VP4 FPGA drives digital video data streams, in either standard and/or
high definition video format, onto three separate 10-bit wide digital input ports of the
ADV7321. For all supported standards the ADV7321 generates all horizontal, vertical and
blanking signals. Six high performance 12-bit digital to analog converters generate the
analog output signals.
Figure 3-4:
Connections from ADV7403 Video Decoder to XC2VP4 FGPA
Clock Generation
XC2VP4
DATA
42
DP[41: 0]
ADV7402 A
VSYNC
HSYNC
FIELD
GENLOCK
LLC 1
VSYNC
HSYNC
FIELD
GENLOCK
LLC 1
ug235_ch3_06_121905
Figure 3-5:
Component Video Output Block Diagram
Virtex-II
Pro
XC2VP4
ADV7321
SD/HD Video
Encoder
RCA
Conditioning
RCA
Conditioning
RCA
Conditioning
RED
GRN
BLU
Analog
Component
Video
Output
Clock Generation
ug235_ch3_07_110805
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