CS42L51 Datasheet, PDF (59/83 Pages) Cirrus Logic – Low Power, Stereo CODEC with Headphone Amp

CS42L51
6.13 PCMX Mixer Volume Control:
PCMA (Address 10h) & PCMB (Address 11h)
7
6
5
4
3
2
1
0
MUTE_PCMMIXx PCMMIXx_VOL PCMMIXx_VOL PCMMIXx_VOL PCMMIXx_VOL PCMMIXx_VOL PCMMIXx_VOL PCMMIXx_VOL
6
5
4
3
2
1
0
NOTE: The DATA_SEL[1:0] bits in reg09h must be set to ‘01’b to enable function control in this register.
PCMX Mixer Channel Mute (MUTE_PCMMIXX)
Default = 1
0 - Disabled
1 - Enabled
Function:
The PCM channel X input to the output mixer will mute when enabled. The muting function is affected by
the DACX Soft and Zero Cross bits (DACX_SZC[1:0]).
PCMX Mixer Volume Control (PCMMIXX_VOL[6:0])
Default: 000 0000
Binary Code
001 1000
···
000 0000
111 1111
111 1110
···
001 1001
Volume Setting
+12.0 dB
···
0 dB
-0.5 dB
-1.0 dB
···
-51.5 dB
Function:
The level of the PCMX input to the output mixer can be adjusted in 0.5 dB increments as dictated by the
DACX Soft and Zero Cross bits (DACX_SZC[1:0]) from +12 to -51.5 dB. Levels are decoded as described
in the table above.
DS679A2
59