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VT1616

6-Channel AC97 Codec with S/PDIF

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VT1616 6-Channel AC97 Codec with S/PDIF

Record Gain Control Register (Index 1Ch)

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default

Mute –

–

– GL3 GL2 GL1 GL0 –

–

–

– GR3 GR2 GR1 GR0 8000h

Mute

GL[3:0]

GR[3:0]

Record Mute Control

“1” : Mute enabled

“0” : Mute disabled

Record Gain Control (Left Channel)

These four bits select the gain applied to the LEFT channel recording source. The gain is

programmable from 0dB to 22.5dB in 1.5dB increments, providing a total of 16 programmable

levels. The gain is set at 0dB when GL[3:0] = 0h.

Record Gain Control (Right Channel)

These four bits select the gain applied to the RIGHT channel recording source. The gain is

programmable from 0dB to 22.5dB in 1.5dB increments, providing a total of 16 programmable

levels. The gain is set at 0dB when GR[3:0] = 0h.

General Purpose Register (Index 20h)

D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default

–

– 3D –

–

– MIX MS LPBK –

–

–

–

–

–

– 0000h

3D

MIX

MS

LPBK

3D Stereo Enhancement

“1” : Enable 3D

“0” : Disable 3D

Mono Output Mode

“1” : Mic Output

“0” : Mono mix output

Microphone Select

“1” : Microphone 2

“0” : Microphone 1

Loopback Mode

For this bit to be valid, 5C_0 must be set to “1”. See description of LBE on page 26.

“1” : DAC/ADC Loopback enabled

“0” : DAC/ADC Loopback disabled

Revision 1.5, October 11, 2002

16

Data Sheet

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