WM9704Q

Production Data

WOLFSON MICROELECTRONICS LTD

PD Rev 2.3 January 2001

32

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

D9D8D7D6D5

D4D3D2D1

D0 Default

00h

Reset

X

SE4

SE3

SE2

SE1

SE0

ID9

ID8

ID7

ID6

ID5

ID4

ID3

ID2

ID1

ID0

6140h

02h

Master volume

Mute

X

X

ML4

ML3

ML2

ML1

ML0

X

X

X

MR4

MR3

MR2

MR1

MR0

8000h

04h

Headphone vol.

Mute

X

X

ML4

ML3

ML2

ML1

ML0

X

X

X

MR4

MR3

MR2

MR1

MR0

8000h

06h

Master vol. mono Mute

XXXX

XXXXXX

MM4

MM3

MM2

MM1 MM0

8000h

0Ah

PCBEEP vol.

Mute

XXXX

XXXXXX

PV3

PV2

PV2

PV0

X

8000h

0Ch Phone volume

Mute

XXXX

XXXXXX

GN4

GN3

GN2

GN1

GN0

8008h

0Eh

Mic volume

Mute

XXXX

XXXX

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

14h

Video volume

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

8808h

16h

Aux volume

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

8808h

18h

Frnt PCM out

volume

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

8808h

1Ah

Rec. select

XXXXX

SL2

SL1

SL0

XXX

XX

SR2

SR1

SR0

0000h

1Ch Rec. gain

Mute

X

X

X

GL3

GL2

GL1

GL0

X

X

X

X

GR3

GR2

GR1

GR0

8000h

20h

General purpose POP

ST

3D

lD

X

X

MIX

MS

LPBK

XX

XXXX

X

8000h

22h

3D control

XXXXX

XXXXXX

X

DP3

DP2

DP1

DP0

0000h

24h

Reserved

XXXXX

XXXXXX

XXXX

X

0000h

26h

Pwrdwn ctrl/stat

APD

PR6

PR5

PR4

PR3

PR2

PR1

PR0

X

X

X

X

REF

ANL

DAC

ADC

000Fh

28h

Ext’d audio ID

ID1

ID0

X

X

X

X

Amap

Ldac

Sdac

Cdac

X

X

VRM

X

DRA

VRA

0281h

2Ah

Ext’d audio

ctrl/stat

X

PRL

PRK

PRJ

PRI

X

Madc

Ldac

Sdac

Cdac

X

X

VRM

X

DRA

VRA

0080h

2Ch Front DAC rate

SR15 SR14 SR13 SR12 SR11 SR10

SR9

SR8

SR7

SR6

SR5

SR4

SR3

SR2

SR1

SR0

BB80h

2Eh

Rear DAC rate

SR15 SR14 SR13 SR12 SR11 SR10

SR9

SR8

SR7

SR6

SR5

SR4

SR3

SR2

SR1

SR0

BB80h

30h

LFE 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

36h

6ch vol. C,LFE

Mute

X

X

LFE4 LFE3

LFE2 LFE1 LFE0

Mute

X

X

NT4

NT3

CNT2 CNT1 CNT0 0000h

38h

6ch vol. L,R surr Mute

X

X

LSR4 LSR3 LSR2 LSR1 LSR0

Mute

X

X

SR4

SR3

RSR2 RSR1 RSR0 8080h

3Ch Ext’d mdm ID

ID1

ID0

XXX

XXXXXX

ID2

CID1 HSET LIN2 LIN1

x00xh

3Eh

Ext’d mdm stat

PRH

PRG

PRF

PRE

PD

PRC

PRB

PRA

DAC

HADC DAC2 DC2

AC1

ADC1 MREF PIO

0100h

40h

Line1 sample

rate ADC/DAC

SR15 SR14 SR13 SR12 SR11 SR10

SR9

SR8

SR7

SR6

SR5

SR4

SR3

SR2

SR1

SR0

BB80h

42h

Line2 sample

rate ADC/DAC

Sample rates written to 42h will alias onto 40h

46h

Line1 DAC/ADC

level

Not supported - set TX modem levels by writing to rear DAC PGA 04h

48h

Line2 DAC/ADC

level

Not supported - set TX modem levels by writing to rear DAC PGA 04h

4Ch GPIO pin config

00

GW13

GW12

GW1

000000

0000

0

000Eh

4Eh

GPIO pin type

11

GC13 GC12 GC11

111111

1111

1

FFFFh

50h

GPIO pin sticky

00

GP13 GP12 GP11

000000

0000

0

0000h

52h

GPIO wake-up

00

GS13 GS12 GS11

000000

0000

0

0000h

54h

GPIO pin status

00

GI13

GI12

GI11

000000

0000

0

000xh

56h

Misc. modem

ctrl/stat

CID2

CID1

CIDR MLNK

X

HSB2 HSB1 HSB0

X

L2B2

L2B1

L2B0

X

L1B2

L1B1 L1B0

0000h

5Ah

Vendor rsvd test ATST DTST AFTS DFTS RTST

DDS

AMD

DLM

I2S

R2S

AND

HIM

HIC

TRM

BB

AEV

0000h

70h

Rr PCM out vol.

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

0808h

72h

Front mixer vol.

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

0808h

74h

Rear mixer vol.

Mute

X

X

GL4

GL3

GL2

GL1

GL0

X

X

X

GR4

GR3

GR2

GR1

GR0

8808h

7Ah

Vendor rsvd

XXXXX

XXXXXX

XXXX

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

4C04h

Table 24 Serial Interface Register Map Description