WM8734SEFL Wolfson Microelectronics, WM8734SEFL Datasheet - Page 36

• Manufacturer Part Number: WM8734SEFL
• Description: Audio CODECs Stereo CODEC
• Manufacturer: Wolfson Microelectronics

Specifications of WM8734SEFL

• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QFN-28
• Minimum Operating Temperature: - 25 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

WM8734
REGISTER MAP
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The complete register map is shown in Table 21. The detailed description can be found in the
relevant text of the device description. There are 8 registers with 9 bits per register. These can be
controlled using either the 2 wire or 3 wire MPU interface.
0000000
Left Line In
0000001
Right Line In
0000100
Analogue Audio
Path Control
0000101
Digital Audio
Path Control
REGISTER
ADDRESS
4:0
7
8
4:0
7
8
4
0
2:1
3
4
BIT
LINVOL[4:0]
LINMUTE
LRINBOTH
RINVOL[4:0]
RINMUTE
RLINBOTH
DACSEL
ADCHPD
DEEMP[1:0]
DACMU
HPOR
LABEL
10111
( 0dB )
1
0
10111
( 0dB )
1
0
0
0
00
1
0
DEFAULT
Left Channel Line Input Volume
Control
11111 = +12dB . . 1.5dB steps down
to 00000 = -34.5dB
Left Channel Line Input Mute to ADC
1 = Enable Mute
0 = Disable Mute
Left to Right Channel Line Input
Volume and Mute Data Load Control
1 = Enable Simultaneous Load of
LINVOL[4:0] and LINMUTE to
RINVOL[4:0] and RINMUTE
0 = Disable Simultaneous Load
Right Channel Line Input Volume
Control
11111 = +12dB . .1.5dB steps down
to 00000 = -34.5dB
Right Channel Line Input Mute to
ADC
1 = Enable Mute
0 = Disable Mute
Right to Left Channel Line Input
Volume and Mute Data Load Control
1 = Enable Simultaneous Load of
RINVOL[4:0] and RINMUTE to
LINVOL[4:0] and LINMUTE
0 = Disable Simultaneous Load
DAC Select
1 =Select DAC
0 = Don’t select DAC
ADC High Pass Filter Enable
1 = Enable High Pass Filter
0 = Disable High Pass Filter
De-emphasis Control
11 = 48kHz
10 = 44.1kHz
01 = 32kHz
00 = Disable
DAC Soft Mute Control
1 = Enable soft mute
0 = Disable soft mute
Store dc offset when High Pass Filter
disabled
1 = store offset
0 = clear offset
DESCRIPTION
PD, Rev 4.3, January 2009
Production Data
36