CS4235 Datasheet, PDF (35/94 Pages) Cirrus Logic – CrystalClear Low Cost ISA Audio System

A5 A4 A3 A2 A1 A0 Level
0
0
0
0
0
0
0
0.0 dB
1
0
0
0
0
0
1
-1.5 dB
2
0
0
0
0
1
0
-3.0 dB
3
0
0
0
0
1
1
-4.5 dB
.
.
.
.
.
.
.
.
8
0
0
1
0
0
0 -12.0 dB
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
60 1
1
1
1
0
0 -90.0 dB
61 1
1
1
1
0
1 -91.5 dB
62 1
1
1
1
1
0 -93.0 dB
63 1
1
1
1
1
1 -94.5 dB
Table 6. DAC1
CFS
21 0
00 0
00 1
01 0
01 1
10 0
10 1
11 0
11 1
C2SL = 0
8.0 kHz
16.0 kHz
27.42 kHz
32.0 kHz
N/A
N/A
48.0 kHz
9.6 kHz
C2SL=1
5.51 kHz
11.025 kHz
18.9 kHz
22.05 kHz
37.8 kHz
44.1 kHz
33.075 kHz
6.62 kHz
Table 7. I8 Sample Frequency Selection
G4 G3 G2 G1 G0 Level
0
0
0
0
0
0
12.0 dB
1
0
0
0
0
1
10.5 dB
2
0
0
0
1
0
9.0 dB
3
0
0
0
1
1
7.5 dB
4
0
0
1
0
0
6.0 dB
5
0
0
1
0
1
4.5 dB
6
0
0
1
1
0
3.0 dB
7
0
0
1
1
1
1.5 dB
8
0
1
0
0
0
0.0 dB
9
0
1
0
0
1
-1.5 dB
10
0
1
0
1
0
-3.0 dB
11
0
1
0
1
1
-4.5 dB
12
0
1
1
0
0
-6.0 dB
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
24
1
1
0
0
0
-24.0 dB
25
1
1
0
0
1
-25.5 dB
26
1
1
0
1
0
-27.0 dB
27
1
1
0
1
1
-28.5 dB
28
1
1
1
0
0
-30.0 dB
29
1
1
1
0
1
-31.5 dB
30
1
1
1
1
0
-33.0 dB
31
1
1
1
1
1
muted
Table 8. AUX1, AUX2, DAC2
DS252PP2
CS4235
CrystalClear ^TM Low Cost ISA Audio System
G4 G3 G2 G1 G0 Master MIC
0
0
0
0
0
0
6 dB 22.5 dB
1
0
0
0
0
1
4 dB 21.0 dB
2
0
0
0
1
0
2 dB 19.5 dB
3
0
0
0
1
1
0 dB 18.0 dB
4
0
0
1
0
0 -2 dB 16.5 dB
.
.
.
.
.
.
.
.
12
0
1
1
0
0 -18 dB 4.5 dB
13
0
1
1
0
1 -20 dB 3.0 dB
14
0
1
1
1
0 -22 dB 1.5 dB
15
0
1
1
1
1 -24 dB 0 dB
.
.
.
.
.
.
.
.
28
1
1
1
0
0 -50 dB -19.5 dB
29
1
1
1
0
1 -52 dB -21.0 dB
30
1
1
1
1
0 -54 dB -22.5 dB
31
1
1
1
1
1 -56 dB muted
Note: Master Volume is also affected by L/RS1, L/RS0
Mic Volume assumes that Boost is off (MBST=0).
Table 9. Master and Microphone Volume
Decimal
Value
0
1
2
3
4
5
6
7
8
.
21
22
23
24
25
26
.
189
190
191
192
193
194
.
255
ADC Fs
(kHz)
50.40
48.00
32.00
27.42
16.00
9.600
8.000
6.620
50.40
.
50.40
48.10
46.01
44.10
42.36
40.70
.
5.600
5.570
5.541
5.512
5.512
5.512
.
5.512
ADC
Divider
16 X 21
353
529
617
1058
1764
2117
2558
16 X 21
.
16 X 21
16 X 22
16 X 23
16 X 24
16 X 25
16 X 26
.
16 X 189
16 X 190
16 X 191
16 X 192
16 X 192
16 X 192
.
16 X 192
DAC Fs
(kHz)
50.40
48.00
32.00
27.42
16.00
9.600
8.000
6.620
50.40
.
50.40
48.10
46.01
44.10
42.36
40.70
.
5.600
5.570
5.541
5.512
5.483
5.455
.
4.150
DAC
Divider
16 X 21
353
529
617
1058
1764
2117
2558
16 X 21
.
16 X 21
16 X 22
16 X 23
16 X 24
16 X 25
16 X 26
.
16 X 189
16 X 190
16 X 191
16 X 192
16 X 193
16 X 194
.
16 X 255
Table 10. X12/13 Sample Frequency Selection
35