WM8599SEFTSLASHV datasheet(37/74 Pages) WOLFSON

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WM8599

PP Rev 1.0 January 2007

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 18 ADC Input Selector Control

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

3:0

ADCL_

SEL[3:0]

0000

7:4

ADCR_

SEL[4:0]

0000

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

9:8

ADC_AMP

_VOL[1:0]

ADC Amplifier Gain Control

00 = 0dB

01 = +3dB

10 = +6dB

11 = +12dB

R30

INPUT_CTRL3

1Eh

ADC_

SWITCH_

ADC Input Switch Control

0 = ADC input switches open

1 = ADC input switches closed

ADCL_

AMP_EN

R31

INPUT_CTRL4

1Fh

ADCR_

AMP_EN

ADC Input Amplifier Enable Controls

0 = Amplifier disabled

1 = Amplifier enabled

Table 28 ADC Input Switch Control

WM8599SEFT/V Datasheet(PDF) 37 Page - Wolfson Microelectronics plc

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