APPOTECH CW6632B - Page 108

102 13.2 DAC Special Function Registers
CW6632B Bluetooth 3.0 Audio Player SOC Version 1.0.0
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Read “1”: done
Write “0” clear pending
Write “1” affects nothing
Register 13-7 DACVOLL– DAC volume setting low byte register
Position
7
6
5
4
3
2
1
0
Name
DACVOLL
Default
1
1
1
1
1
1
1
1
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Note: When read DACVOLL and DACVOLH, the value isn‟t the setting value, but the actual DAC volume value
Register 13-8 DACVCON– DAC volume control register
Position
7
6
5
4
3
2
1
0
Name
-
-
-
DACVSET
DACVSTEP
DACVEN
DACVSTEP
Default
-
-
-
0
0
0
0
0
Access
-
-
-
WO
R/W
R/W
R/W
R/W
DACVSET: Direct set DAC volume value
Write “1” to direct set DAC volume value
Write “0” affects nothing
DACVEN: DAC volume adjust enable
0 = Disable DAC volume adjust, keep the current volume
1 = Enable DAC volume adjust
{ DACVSTEP2 , DACVSTEP}: DAC adjust volume steps
000 = Steps is “1”
001 = Steps is “2”
010 = Steps is “4”
011 = Steps is “8”
100 = Steps is “16”
101 = Steps is “32”
110 = Steps is “64”
111 = Steps is “128”
Register 13-9 TRIMCON1 – DAC trim control register1
Position
7
6
5
4
3
2
1
0
Name
TRIMSPEED
-
-
DITSEL
--
DONESEL
TRIMEN
Default
0
0
-
-
0
0
0
0
Access
RW
RW
-
-
RW
RW
RW
RW
TRIMSPEED: DAC trim speed control
00 = trim 1 step every 1 sample
01 = trim 1 step every 2 samples
10 = trim 1 step every 3 samples