STAC9752 datasheet(52/95 Pages) IDT

52 / 95 page

STAC9752/9753

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

IDT™

STAC9752/9753

REV 3.3 1206

TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING

8.1.7.

Mic Volume (Index 0Eh)

Default: 8008h.

8.1.8.

LineIn Volume (Index 10h)

Default: 8808h.

D15

D14

D13

D12

D11

D10

Mute

RESERVED

BOOSTEN

RESERVED

GN4

GN3

GN2

GN1

GN0

Bit(s)

Reset Value

Name

Description

Mute

0 = No mute

1 = Mute phone

14:7

RESERVED

Bit not used, should read back 0

BOOSTEN

Works with MICGAINVAL (Register 6Eh, Bit D2)

BOOSTEN MICGAINVAL = Microphone Gain Boost

0 0 = 0 dB

0 1 = 10 dB

1 0 = 20 dB

1 1 = 30 dB

RESERVED

4:0

GN<4:0>

Phone Volume Control

00000 = 12dB gain

00001 = 10.5dB gain

.....

01000 = 0dB gain

.....

11111 = -34.5dB gain

D15

D14

D13

D12

D11

D10

Mute

RESERVED

GL4

GL3

GL2

GL1

GR0

RESERVED

GR4

GR3

GR2

GR1

GR0

Bit(s)

Reset Value

Name

Description

Mute

0 = No mute

1 = Mute linein

14:13

RESERVED

Bit not used, should read back 0

12:8

GL<4:0>

Left LineIn Volume Control

00000 = 12dB gain

00001 = 10.5dB gain

.....

01000 = 0dB gain

.....

11111 = -34.5dB gain

7:5

RESERVED

Bit not used, should read back 0

4:0

GR<4:0>

Right LineIn Volume Control

00000 = 12dB gain

00001 = 10.5dB gain

.....

01000 = 0dB gain

.....

11111 = -34.5dB gain

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