WM8731LSEFL/R Wolfson Microelectronics, WM8731LSEFL/R Datasheet - Page 49

• Manufacturer Part Number: WM8731LSEFL/R
• Description: Audio CODECs STEREO CODEC w/ HP 28-pin
• Manufacturer: Wolfson Microelectronics

Specifications of WM8731LSEFL/R

• Number Of Adc Inputs: 1
• Number Of Dac Outputs: 1
• Conversion Rate: 96 KSPS
• Interface Type: Serial (2-Wire, 3-Wire, I2S)
• Resolution: 18 bit, 20 bit
• Operating Supply Voltage: - 0.3 V to + 3.63 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN EP
• Minimum Operating Temperature: - 40 C
• Number Of Channels: 2 ADC/2 DAC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8731 / WM8731L
REGISTER MAP
Table 29 Register Map
w
REGISTER
R0 (00h)
Left Line In
R1 (01h)
Right Line In
R2 (02h)
Left
Headphone Out
R1 (01h)
Right
Headphone Out
R4 (04h)
Analogue Audio
Path Control
R5 (05h)
Digital Audio
Path Control
R6 (06h)
Power Down
Control
R7 (07h)
Digital Audio
Interface Format
R8 (08h)
Sampling
Control
R9 (09h)
Active Control
R15 (0Fh)
Reset
LRHPBOTH
RLHPBOTH
LRINBOTH
RLINBOTH
BIT[8]
0
0
0
0
0
0
POWEROFF
CLKODIV2
RINMUTE
LINMUTE
BCLKINV
RZCEN
LZCEN
BIT[7]
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 28.
Table 28 Poweroff Mode
The complete register map is shown in Table 29. The detailed description can be found in Table 30
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.
0
0
SIDEATT[1:0]
1
1
1
CLKOUTPD
CLKIDIV2
BIT[6]
0
1
1
MS
0
0
0
0
0
0
1
SIDETONE
LRSWAP
OSCPD
BIT[5]
0
0
0
0
X
X
X
RESET[8:0]
DACSEL
OUTPD
X
X
X
BIT[4]
HPOR
LRP
0
SR[3:0]
X
X
X
RHPVOL[6:0]
LHPVOL[6:0]
BYPASS
DACMU
DACPD
BIT[3]
0
X
X
X
IWL[1:0]
RINVOL[4:0]
LINVOL[4:0]
ADCPD
X
X
X
BIT[2]
INSEL
0
DEEMPH[1:0]
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.
MUTEMIC
MICPD
BIT[1]
BOSR
0
FORMAT[1:0]
PD, Rev 4.8, April 2009
MICBOOST
LINEINPD
ADCHPD
NORMAL
BIT[0]
Active
USB/
Production Data
0_1001_0111
0_1001_0111
0_0111_1001
0_0111_1001
0_0000_1010
0_0000_1000
0_1001_1111
0_1001_1111
0_0000_0000
0_0000_0000
DEFAULT
not reset
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