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Video Input/Output Daughter Card
UG235 (v1.2.1) October 31, 2007
Chapter 3:
Component and S-Video Interfaces
R
Analog Output Signal Conditioning
Output analog signals are first conditioned to meet standards requirements and then
connected to the red, green and blue RCA type connectors X2, X4 and X6 respectively.
Analog output is conditioned by a combination of passive and active circuits, as illustrated
in
ADV7403 Configuration Modes
Refer to the ADV7403 data sheet for details configuring the ADV7403 device.
The ADV7403 is mapped to I2C address 0x40/0x41.
Table 3-1:
Configuration Modes for ADV7403 Video Decoder Chip
Register
Name
Register
Address
Register
Value
Description
525P
Primary
Mode
0x05
0x01
Video
Standard
0x06
0x08
[2:0] =PRIM_MODE
Enable
XTAL
0x1D
0x47
[3:0]= VID_STD
ADC Power
and PLL
0x3a
0x10
latch clock = 13-55 MHz
Bias Control
0x3b
0x80
External Bias Enable'
TLLC
Control
0x3c
0x5c
PLL qpump
0x6b
0xC2
[3:0]cpop_sel(1=20-bit,2=30-bit)
0x85
0x18
Turn off SSPD as sync is on Y
0x86
0x0b
ENABLE SDTI line count mode
0xb3
0xfe
SDTI
ADC sw1
0xc3
0x54
[7:4]=adc1
[3:0]=adc0
ADC sw2
0xc4
0x86
[7]=sw_en,
[6]=SOG
[3:0]=adc2
0x0e
0x80
Startup sequence
0x52
0x46
0x54
0x00
0x0e
0x00
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