參數(shù)資料
型號(hào)： ADV7189
廠商： Analog Devices, Inc.
英文描述： Multiformat SDTV Video Decoder
中文描述： 標(biāo)清多格式視頻解碼器
文件頁(yè)數(shù)： 15/104頁(yè)
文件大小： 890K
代理商： ADV7189
ADV7189
Manual Input Muxing
By accessing a set of manual override muxing registers, the
analog input muxes of the ADV7189 can be controlled directly.
This is referred to as manual input muxing.
Rev. A | Page 15 of 104
Notes
Manual input muxing overrides other input muxing
control bits (e.g., INSEL)
The manual muxing is activated by setting the
ADC_SW_MAN_EN bit. It only affects the analog
switches in front of the ADCs.
This means if the settings of INSEL and the manual input
muxing registers (ADC0/1/2_sw) contradict each other,
the ADC0/ADC1/ADC2_sw settings apply and INSEL is
ignored.
Manual input muxing only controls the analog input
muxes. INSEL[3:0] still has to be set so the follow-on
blocks process the video data in the correct format.
This means INSEL must still be used to tell the ADV7189
whether the input signal is of component, YC, or CVBS
format.
There are restrictions in the channel routing imposed by the
analog signal routing inside the IC; every input pin cannot be
routed to each ADC. Please refer to Figure 6 for an overview on
the routing capabilities inside the chip. The three mux sections
can be controlled by the reserved control signal buses
ADC0/ADC1/ADC2_sw[3:0]. Table 10 explains the control
words used.
SETADC_sw_man_en, Manual Input Muxing Enable,
Address C4, [7]
ADC0_sw[3:0],
ADC0 mux configuration,
Address 0xC3, [3:0]
ADC1_sw[3:0],
ADC1 mux configuration, Address 0xC3, [7:4]
ADC2_sw[3:0],
ADC2 mux configuration, Address 0xC4, [3:0]
Table 10. Manual Mux Settings for All ADCs
SETADC_sw_man_en = 1
ADC1_sw[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
ADC0_sw[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
ADC0 Connected to:
No Connection
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
No Connection
No Connection
AIN7
AIN8
AIN9
AIN10
AIN11
AIN12
No Connection
ADC1 Connected to:
No Connection
No Connection
No Connection
AIN3
AIN4
AIN5
AIN6
No Connection
No Connection
No Connection
No Connection
AIN9
AIN10
AIN11
AIN12
No Connection
ADC2_sw[3:0]
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
ADC2 Connected to:
No Connection
No Connection
AIN2
No Connection
No Connection
AIN5
AIN6
No Connection
No Connection
No Connection
AIN8
No Connection
No Connection
AIN11
AIN12
No Connection
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