WM8594_07 Wolfson Microelectronics Ltd., WM8594_07 Datasheet - Page 41

• Manufacturer Part Number: WM8594_07
• Description: 24-bit 192khz 2vrms Multi-channel Codec
• Manufacturer: Wolfson Microelectronics Ltd.

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ADC INPUT SELECTOR CONTROL
The ADC input switch can be configured to allow any combination of two inputs to be input to the
ADC. Each input switch channel can be controlled independently.
The input switch also includes PGAs to provide a range of analogue gain settings between -6dB and
+6dB prior to the ADC. These PGAs can be enabled and disabled independently.
Figure 20 ADC Input Selector Control
INPUT_CTRL3
INPUT_CTRL4
Table 32 ADC Input Switch Control
REGISTER
ADDRESS
R30
1Eh
R31
1Fh
BIT
3:0
7:4
9:8
10
6
7
ADC_AMP
_VOL[1:0]
SWITCH_
AMP_EN
AMP_EN
SEL[3:0]
SEL[4:0]
ADCR_
ADCR_
LABEL
ADCL_
ADCL_
ADC_
EN
DEFAULT
0000
0000
10
0
0
0
ADC Input Select
0000 = VIN1L
0001 = VIN2L
0010 = VIN3L
0011 = VIN4L
0100 = VIN5L
0101 to 1000 = reserved
1000 = VIN1R
1001 = VIN2R
1010 = VIN3R
1011 = VIN4R
1100 = VIN5R
1101 to 1111 = reserved
ADC Amplifier Gain Control
00 = 0dB
01 = +3dB
10 = +6dB
11 = +12dB
ADC Input Switch Control
0 = ADC input switches open
1 = ADC input switches closed
ADC Input Amplifier Enable Controls
0 = Amplifier disabled
1 = Amplifier enabled
DESCRIPTION
PP Rev 1.0 January 2007
WM8594
41