wm8961 Wolfson Microelectronics plc, wm8961 Datasheet - Page 87

• Manufacturer Part Number: wm8961
• Description: Ultra-low Power Stereo Codec With 1w Stereo Class D Speaker Drivers And Ground Referenced Headphone Drivers
• Manufacturer: Wolfson Microelectronics plc

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WM8961
Register 08h Clocking2
Register 09h Audio Interface 1
Register 0Ah Left DAC volume
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
Interface 1
ADDRESS
R10 (0Ah)
Left DAC
R9 (09h)
volume
Audio
BIT
BIT
4:3
2:1
BIT
7:0
0
8
DACCOMP[1:0]
ADCCOMP[1:0]
LDACVOL[7:0]
LOOPBACK
DACVU
LABEL
LABEL
LABEL
1111_1111
DEFAULT
DEFAULT
DEFAULT
00
00
0
0
1000 = Reserved
1001 = SYSCLK / 12
1010 = SYSCLK / 16
1011 = SYSCLK / 24
1100 = Reserved
1101 to 1111 = SYSCLK / 32
DAC data companding mode
00 : off
01 : reserved
10 : μ-law
11 : A-law
ADC data companding mode
00 : off
01 : reserved
10 : μ-law
11 : A-law
Audio interface loopback mode enable
0 : No loopback
1 : Loopback enabled, ADC data output is fed directly into DAC data
input
DAC digital volume update
Writing 1 to this bit will cause left and right
DAC volumes to be updated (LDACVOL and
RDACVOL)
Left DAC digital volume
FFh -> C0h : 0dB
BFh : -0.375dB
Beh: -0.75dB
….. in steps of -0.375dB to
02h: -71.25dB
01h: -71.625dB
00h: Digital Mute
DESCRIPTION
DESCRIPTION
DESCRIPTION
PP, August 2009, Rev 3.1
Pre-Production
87