wm8918 Wolfson Microelectronics plc, wm8918 Datasheet - Page 139

• Manufacturer Part Number: wm8918
• Description: Ultra Low Power Dac For Portable Audio Applications
• Manufacturer: Wolfson Microelectronics plc

Production Data
Register 1Eh DAC Digital Volume Left
Register 1Fh DAC Digital Volume Right
Register 20h DAC Digital 0
w
Volume Left
DAC Digital
DAC Digital
DAC Digital
REGISTER
REGISTER
REGISTER
ADDRESS
ADDRESS
ADDRESS
R30 (1Eh)
R31 (1Fh)
R32 (20h)
Volume
Right
0
11:8
BIT
BIT
BIT
7:0
7:0
7:4
3:2
1:0
8
8
DMICL_DAC_S
DACL_VOL[7:0
DACR_VOL[7:
DMICR_DAC_
DMIC_TO_DA
DMIC_TO_DA
SVOL[3:0]
DAC_VU
DAC_VU
VOL[3:0]
LABEL
LABEL
LABEL
CR[1:0]
CL[1:0]
0]
]
1100_0000 Left DAC Digital Volume
1100_0000 Right DAC Digital Volume
DEFAULT
DEFAULT
DEFAULT
0000
0000
00
00
0
0
DAC Volume Update
Writing a 1 to this bit causes left and right DAC volume
to be updated simultaneously
00h = Mute
01h = -71.625dB
02h = -71.250dB
… (0.375dB steps)
C0h to FFh = 0dB
DAC Volume Update
Writing a 1 to this bit causes left and right DAC volume
to be updated simultaneously
00h = Mute
01h = -71.625dB
02h = -71.250dB
… (0.375dB steps)
C0h to FFh = 0dB
Left Digital Sidetone Volume
0000 = -36dB
0001 = -33dB
(… 3dB steps)
1011 = -3dB
11XX = 0dB
Right Digital Sidetone Volume
0000 = -36dB
0001 = -33dB
(… 3dB steps)
1011 = -3dB
11XX = 0dB
Left DAC Digital Sidetone Source
00 = No sidetone
01 = Left DMIC
10 = Right DMIC
11 = Reserved
Right DAC Digital Sidetone Source
00 = No sidetone
01 = Left DMIC
10 = Right DMIC
11 = Reserved
DESCRIPTION
DESCRIPTION
DESCRIPTION
PD, Rev 4.0, September 2010
REFER TO
REFER TO
REFER TO
WM8918
139