Advanced Information

WM9708

WOLFSON MICROELECTRONICS LTD

AI Rev 2.0 April 2001

25

SURROUND SOUND

DSS1, DSS0

PCM OUT LEFT

PCM OUT RIGHT

00

3

4

01

7

8

1X

6

9

Table 14 Vendor ID Registers - Reg 74 [1:0]

This allows the user to connect multiple codecs to a host controller using a single AC-link interface.

The volume control register is still 02h and the rate register is 2Ch. The ID pins have no effect on this

mapping.

SERIAL INTERFACE REGISTER MAP

The following table shows the function and address of the various control bits that are loaded through

the serial interface during write operations.

Reg Name

D15

D14

D13

D12

D11

D10

D9D8

D7D6D5D4D3D2

D1

D0

efault

00h

Reset

X

SE4

SE3

SE2

SE1

SE0

ID9

ID8

ID7

ID6

ID5

ID4

ID3

ID2

ID1

ID0

6150h

02h

Master volume

Mute

X

X

ML4

ML3

ML2

ML1

ML0

X

X

X

MR4

MR3

MR2

MR1

MR0

8000h

04h

LNLVL volume

Mute

X

X

ML4

ML3

ML2

ML1

ML0

X

X

X

MR4

MR3

MR2

MR1

MR0

8000h

06h

Master volume

mono

Mute

X

XXXXXX

XXX

MM4

MM3

MM2

MM1

MM0

8000h

0Ah

PCBEEP volume

Mute

X

XXXXXX

XXX

PV3

PV2

PV2

PV0

X

8000h

0Eh

Mic volume

Mute

X

XXXXXX

X

20dB

X

GN4

GN3

GN2

GN1

GN0

8008h

10h

Line in volume

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

8808h

12h

CD volume

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

8808h

18h

PCM out volume

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

8808h

1Ah

Rec select

XX

XXX

SL2

SL1

SL0

XXXXX

SR2

SR1

SR0

0000h

1Ch

Rec gain

Mute

X

XX

GL3

GL2

GL1

GL0

XXXX

GR3

GR2

GR1

GR0

8000h

20h

General purpose

POP

ST

3D

lD

X

X

MIX

MS

LPBK

XXXXX

X

X

0000h

26h

Power/down control

status

APD

X

PR5

PR4

PR3

PR2

PR1

PR0

XXXX

REF

ANL

DAC

ADC

000Fh

28h

Ext’d audio ID

ID1

ID0

XXXX

Amap

Ldac

Sdac

Cdac

X

X

VRM

X

DRA

VRA

1001h

2Ah

Ext’d audio stat/ctrl

X

PRL

PRK

PRJ

PRI

X

Madc

Ldac

Sdac

Cdac

X

X

VRM

X

DRA

VRA

0000h

2Ch

Front DAC rate

SR15 SR14 SR13 SR12 SR11 SR10

SR9

SR8

SR7

SR6

SR5

SR4

SR3

SR2

SR1

SR0

BB80h

32h

Audio ADC rate

SR15 SR14 SR13 SR12 SR11 SR10

SR9

SR8

SR7

SR6

SR5

SR4

SR3

SR2

SR1

SR0

BB80h

5Ch

Vendor specific

REVISION

X

X

X

X

XXXXXX

X

AME

1000h

72h

Front mixer volume

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

0808h

74h

Surround sound

X

X

XXXXXX

XXXXXX

DSS1

DSS0

0000h

7Ah

Vendor reserved

X

X

XXXXXX

XXXXXX

X

X

0000h

7Ch

Vendor ID1

F7

F6

F5

F4

F3

F2

F1

F0

S7

S6

S5

S4

S3

S2

S1

S0

574Dh

7Eh

Vendor ID2

T7

T6

T5

T4

T3

T2

T1

T0

Rev7

Rev6

Rev5

Rev4

Rev3

Rev2

Rev1

Rev0

4C03h

Table 15 Serial Interface Register Map Description

Note:

All unused bits should have zeros written to them and will return the same when read.