Pcmx, P 62, Cs42l51 – Cirrus Logic CS42L51 User Manual
Page 62
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DS679F1
CS42L51
6.13
PCMX Mixer Volume Control:
PCMA (Address 10h) & PCMB (Address 11h)
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
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.
6.14
Beep Frequency & Timing Configuration (Address 12h)
Note: The DATA_SEL[1:0] bits in reg09h must be set to ‘01’b to enable function control in this register.
Beep Frequency (FREQ[3:0])
Default: 0000
7
6
5
4
3
2
1
0
MUTE_
PCMMIXx
PCMMIXx_
VOL6
PCMMIXx_
VOL5
PCMMIXx_
VOL4
PCMMIXx_
VOL3
PCMMIXx_
VOL2
PCMMIXx_
VOL1
PCMMIXx_
VOL0
Binary Code
Volume Setting
001 1000
+12.0 dB
···
···
000 0000
0 dB
111 1111
-0.5 dB
111 1110
-1.0 dB
···
···
001 1001
-51.5 dB
7
6
5
4
3
2
1
0
FREQ3
FREQ2
FREQ1
FREQ0
ONTIME3
ONTIME2
ONTIME1
ONTIME0
FREQ[3:0]
Frequency
Fs = 12, 24, 48 or 96
kHz
Pitch
0000
260.87 Hz
C4
0001
521.74 Hz
C5
0010
585.37 Hz
D5
0011
666.67 Hz
E5
0100
705.88 Hz
F5