Datasheet

ADV7189B
Rev. B | Page 14 of 104
04983-0-007
SET INSEL[3:0] TO
CONFIGURE ADV7189B TO
DECODE VIDEO FORMAT:
CVBS: 0000
YC: 0110
YPrPb: 1001
USE MANUAL INPUT MUXING
(ADC_SW_MAN_EN, ADC0_SW,
ADC1_SW, ADC2_SW)
SET INSEL[3:0] FOR REQUIRED
MUXING CONFIGURATION
CONNECTING
ANALOG SIGNALS
TO ADV7189
ADI-RECOMMENDED
INPUT MUXING; SEE TABLE 9
YES NO
Figure 7. Input Muxing Overview
Table 8. Input Channel Switching Using INSEL[3:0]
Description
INSEL[3:0] Analog Input Pins Video Format
0000 CVBS1 = AIN1 (default) Composite
0001 CVBS2 = AIN2 Composite
0010 CVBS3 = AIN3 Composite
0011 CVBS4 = AIN4 Composite
0100 CVBS5 = AIN5 Composite
0101 CVBS6 = AIN6 Composite
0110 Y1 = AIN1 YC
C1 = AIN4 YC
0111 Y2 = AIN2 YC
C2 = AIN5 YC
1000 Y3 = AIN3 YC
C3 = AIN6 YC
1001 Y1 = AIN1 YPrPb
PB1 = AIN4 YPrPb
PR1 = AIN5 YPrPb
1010 Y2 = AIN2 YPrPb
PB2 = AIN3 YPrPb
PR2 = AIN6 YPrPb
1011 CVBS7 = AIN7 Composite
1100 CVBS8 = AIN8 Composite
1101 CVBS9 = AIN9 Composite
1110 CVBS10 = AIN10 Composite
1111 CVBS11 = AIN11 Composite
Table 9. Input Channel Assignments
Input
Channel
Pin
No.
ADI Recommended Input Muxing Control
INSEL[3:0]
AIN7 41 CVBS7
AIN1 42 CVBS1 YC1-Y YPrPb1-Y
AIN8 43 CVBS8
AIN2 44 CVBS2 YC2-Y YPrPb2-Y
AIN9 45 CVBS9
AIN3 46 CVBS3 YC3-Y YPrPb2-Pb
AIN10 57 CVBS10
AIN4 58 CVBS4 YC1-C YPrPb1-Pb
AIN11 59 CVBS11
AIN5 60 CVBS5 YC2-C YPrPb1-Pr
AIN12 61 Not Available
AIN6 62 CVBS6 YC3-C YPrPb2-Pr
ADI-recommended input muxing is designed to minimize
crosstalk between signal channels and to obtain the highest
level of signal integrity.
143HTable 9 summarizes how the PCB lay-
out should connect analog video signals to the ADV7189B.
It is strongly recommended to connect any unused analog input
pins to AGND to act as a shield.
Inputs AIN7 to AIN11 should be connected to AGND when
only six input channels are used. This improves the quality
of the sampling due to better isolation between channels.
AIN12 is not under the control of INSEL[3:0]. It can only be
routed to ADC0/ADC1/ADC2 by manual muxing. See
144HTable 10
for further details.