WM8731 Wolfson Microelectronics Ltd., WM8731 Datasheet - Page 46

• Manufacturer Part Number: WM8731
• Description: WM8731 : Low Power Audio Codec With Integrated Headphone Driver
• Manufacturer: Wolfson Microelectronics Ltd.

WM8731
REGISTER MAP
Table 28 Mapping of Program Registers
R0 (00h)
R1 (02h)
R2 (04h)
R3 (06h)
R4 (08h)
R5 (0Ah)
R6 (0Ch)
R7 (0Eh)
R8 (10h)
R9 (12h)
R15(1Eh)
REGISTER
15
B
0
0
0
0
0
0
0
0
0
0
0
14
B
0
0
0
0
0
0
0
0
0
0
0
13
B
0
0
0
0
0
0
0
0
0
0
0
ADDRESS
The device can be powered off by writing to the POWEROFF bit of the Power Down register. In
POWEROFF mode the Control Interface and a small portion of the digital remain active. The
analogue VMID reference is disabled. As in STANDBY mode the crystal oscillator and/or CLKOUT
pin can be independently controlled. Refer to Table 27.
Table 27 Poweroff Mode
The complete register map is shown in Table 28. The detailed description can be found in Table 29
and in the relevant text of the device description. There are 11 registers with 16 bits per register (7 bit
address + 9 bits of data). These can be controlled using either the 2 wire or 3 wire MPU interface.
12
B
0
0
0
0
0
0
0
0
1
1
1
1
1
1
11
B
0
0
0
0
1
1
1
1
0
0
1
0
1
1
10
B
0
0
1
1
0
0
1
1
0
0
1
B
9
0
1
0
1
0
1
0
1
0
1
1
0
0
1
BOTH
LRHP
BOTH
RLHP
BOTH
BOTH
LRIN
RLIN
B8
0
0
0
0
0
0
X
X
X
RZCEN
LZCEN
MUTE
MUTE
BCLK
CLKO
PWR
DIV2
OFF
RIN
INV
B7
LIN
0
0
X
X
X
SIDEATT
OUTPD
CLKI
DIV2
CLK
X
X
X
B6
MS
0
0
0
0
SIDE TONE DAC SEL BY PASS
LR SWAP
OSCPD
X
X
X
B5
0
0
0
0
X
X
X
OUTPD
HPOR
RESET
DATA
LRP
B4
0
SR
DESCRIPTION
POWEROFF, but with Crystal
Oscillator OS and CLKOUT
available
POWEROFF, but with Crystal
Oscillator OS available, CLKOUT
not-available
POWEROFF, Crystal oscillator
and CLKOUT not-available.
DAC MU
DACPD
RHPVOL
LHPVOL
B3
0
IWL
ADCPD
RINVOL
INSEL MUTE MIC MIC BOOST
LINVOL
B2
0
AI Rev 2.3 August 2001
DEEMPH
Advanced Information
MICPD
BOSR USB/ NORM
B1
0
FORMAT
ADC HPD
LINEINPD
ACTIVE
B0
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