WM8281 Datasheet, PDF (187/392 Pages) Cirrus Logic – Low Power Audio System with Ambient Noise Cancellation and Echo Cancellation

WM8281
REGISTER
ADDRESS
BIT
7:0
LABEL
OUT1L_VOL [7:0]
R1045
(0415h)
DAC
Digital
Volume
1R
9 OUT_VU
8 OUT1R_MUTE
7:0 OUT1R_VOL
[7:0]
R1049
9
(0419h)
DAC
Digital
Volume 2L ₈
OUT_VU
OUT2L_MUTE
7:0 OUT2L_VOL [7:0]
R1053
(041Dh)
DAC
Digital
Volume
2R
9 OUT_VU
8 OUT2R_MUTE
DEFAULT
DESCRIPTION
80h
Output Path 1 (Left) Digital Volume
-64dB to +31.5dB in 0.5dB steps
00h = -64dB
01h = -63.5dB
… (0.5dB steps)
80h = 0dB
… (0.5dB steps)
BFh = +31.5dB
C0h to FFh = Reserved
(See Table 65 for volume range)
Output Signal Paths Volume Update
Writing a 1 to this bit will cause the Output
Signal Paths Volume and Mute settings to
be updated simultaneously
1
Output Path 1 (Right) Digital Mute
0 = Un-mute
1 = Mute
80h
Output Path 1 (Right) Digital Volume
-64dB to +31.5dB in 0.5dB steps
00h = -64dB
01h = -63.5dB
… (0.5dB steps)
80h = 0dB
… (0.5dB steps)
BFh = +31.5dB
C0h to FFh = Reserved
(See Table 65 for volume range)
Output Signal Paths Volume Update
Writing a 1 to this bit will cause the Output
Signal Paths Volume and Mute settings to
be updated simultaneously
1
Output Path 2 (Left) Digital Mute
0 = Un-mute
1 = Mute
80h
Output Path 2 (Left) Digital Volume
-64dB to +31.5dB in 0.5dB steps
00h = -64dB
01h = -63.5dB
… (0.5dB steps)
80h = 0dB
… (0.5dB steps)
BFh = +31.5dB
C0h to FFh = Reserved
(See Table 65 for volume range)
Output Signal Paths Volume Update
Writing a 1 to this bit will cause the Output
Signal Paths Volume and Mute settings to
be updated simultaneously
1
Output Path 2 (Right) Digital Mute
0 = Un-mute
1 = Mute
Rev 4.0
187