Datasheet

ADV7188
Rev. A | Page 15 of 112
Table 10. Input Channel Assignments
Input Channel Pin Recommended Input Muxing Control—INSEL [3:0]
AIN7 41 CVBS7 SCART1-B
AIN1 42 CVBS1 YC1-Y YPrPb1-Y SCART2-CVBS
AIN8 43 CVBS8 SCART1-R
AIN2 44 CVBS2 YC2-Y YPrPb2-Y
AIN9 45 CVBS9 SCART1-G
AIN3 46 CVBS3 YC3-Y YPrPb2-Pb
AIN10 57 CVBS10
AIN4 58 CVBS4 YC1-C YPrPb1-Pb SCART2-B
AIN11 59 CVBS11 SCART1-CVBS
AIN5 60 CVBS5 YC2-C YPrPb1-Pr SCART2-R
AIN12 61 Not available
AIN6 62 CVBS6 YC3-C YPrPb2-Pr SCART2-G
Table 11. Manual Mux Settings for All ADCs (Set ADC_SW_MAN_EN to 1)
ADC0_SW [3:0]
ADC0
Connected To
ADC1_SW [3:0]
ADC1
Connected To
ADC2_SW [3:0]
ADC2
Connected To
ADC3_SW [3:0]
ADC3
Connected To
0000 No connection 0000 No connection 0000 No connection 0000 No connection
0001 AIN1 0001 No connection 0001 No connection 0001 No connection
0010 AIN2 0010 No connection 0010 AIN2 0010 No connection
0011 AIN3 0011 AIN3 0011 No connection 0011 No connection
0100 AIN4 0100 AIN4 0100 No connection 0100 AIN4
0101 AIN5 0101 AIN5 0101 AIN5 0101 No connection
0110 AIN6 0110 AIN6 0110 AIN6 0110 No connection
0111 No connection 0111 No connection 0111 No connection 0111 No connection
1000 No connection 1000 No connection 1000 No connection 1000 No connection
1001 AIN7 1001 No connection 1001 No connection 1001 AIN7
1010 AIN8 1010 No connection 1010 AIN8 1010 No connection
1011 AIN9 1011 AIN9 1011 No connection 1011 No connection
1100 AIN10 1100 AIN10 1100 No connection 1100 No connection
1101 AIN11 1101 AIN11 1101 AIN11 1101 No connection
1110 AIN12 1110 AIN12 1110 AIN12 1110 No connection
1111 No connection 1111 No connection 1111 No connection 1111 No connection
RGB_IP_SEL, Address 0xF1 [0]
For SCART input, R, G, and B signals can be input either on
AIN4, AIN5, and AIN6 or on AIN7, AIN8, and AIN9.
0 (default)—B is input on AIN4, R is input on AIN5, and G is
input on AIN6.
1—B is input on AIN7, R is input on AIN8, and G is input
on AIN9.
MANUAL INPUT MUXING
By accessing a set of manual override muxing registers, the
analog input muxes of the ADV7188 can be controlled directly.
This is referred to as manual input muxing. Manual input
muxing overrides other input muxing control bits, including
INSEL and SDM_SEL.
Manual muxing is activated by setting the ADC_SW_MAN_EN
bit. It only affects the analog switches in front of the ADCs.
Therefore, if the settings of INSEL and the manual input
muxing bits (ADC0_SW/ADC1_SW/ADC2_SW/ADC3_SW)
contradict each other, the ADC0_SW/ADC1_SW/ADC2_SW/
ADC3_SW settings apply and INSEL and SDM_SEL are ignored.
Manual input muxing controls only the analog input muxes. For
the follow-on blocks to process video data in the correct format,
however, INSEL must still be used to indicate whether the input
signal is of YPbPr, Y/C, or CVBS format.
Restrictions in the channel routing are imposed by the analog
signal routing inside the IC; each input pin cannot be routed
to each ADC. Refer to
Figure 6 for an overview on the routing cap-
abilities inside the chip. The four mux sections can be controlled by
the reserved control signal buses, ADC0_SW [3:0], ADC1_SW [3:0],
ADC2_SW [3:0], and ADC3_SW [3:0].
Table 11 explains the
control words used.