wm8961 Wolfson Microelectronics plc, wm8961 Datasheet - Page 89

• 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 11h ALC1
Register 12h ALC2
REGISTER
REGISTER
ADDRESS
ADDRESS
R17 (11h)
R18 (12h)
ALC1
ALC2
BIT
8:7
6:4
3:0
BIT
6:4
3:0
MAXGAIN[2:0]
MINGAIN[2:0]
ALCSEL[1:0]
ALCL[3:0]
HLD[3:0]
LABEL
LABEL
DEFAULT
DEFAULT
0000
1011
111
000
00
ALC Function Select
00 : ALC off (PGA gain set by register)
01 : Right channel only
10: Left channel only
11 : Stereo (PGA registers unused). Note: ensure that LINVOL and
RINVOL settings are the same before entering this mode.
ALC Max Gain
000 : -18dB
001 : -12dB
010 : -6dB
011 : 0dB
100 : 6dB
101 : 12dB
110 : 18dB
111 : 24dB
ALC Target Level (dB FS)
0000 : -28.5
0001 : -27
…1.5dB steps…
1111 : -6
Min gain setting
000 : -23.25dB
001 : -17.25dB
010 : -11.25dB
011 : -5.25dB
100 : +0.75dB
101 : +6.75dB
110 : +12.75dB
111 : +18.75dB
ALC Hold time
0000 : 0ms
0001 : 2.67ms
0010 : 5.33ms
Doubling with each step up to…
1111 : 43.691s
DESCRIPTION
DESCRIPTION
PP, August 2009, Rev 3.1
Pre-Production
89