CS4231A Datasheet, PDF (39/76 Pages) List of Unclassifed Manufacturers – PARALLEL INTERFACE MULTIMEDIA AUDIO CODEC

CS4231A
NOTE: Output level relative to input level assuming OLB=1.
AG3 AG2 AG1 AG0
Level
0
0000
0.0 dB
1
0001
1.5 dB
2
0010
3.0 dB
3
0011
4.5 dB
.
.
.
.
.
.
.
.
.
12
1100
18.0 dB
13
1101
19.5 dB
14
1110
21.0 dB
15
1111
22.5 dB
Table 4. ADC Input Gain
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
.
.
.
.
.
.
.
.
.
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. DAC & Loopback Attenuation
MIA3 MIA2 MIA1 MIA0
Level
0
0000
0.0 dB
1
0001
-3.0 dB
2
0010
-6.0 dB
3
0011
-9.0 dB
.
.
.
.
.
.
.
.
.
12
1100
-36.0 dB
13
1101
-39.0 dB
14
1110
-42.0 dB
15
1111
-45.0 dB
Table 7. Mono Mixer Attenuation
SS1 SS0 ADC Input Multiplexer
0
0 0 Line
1
0 1 Auxiliary 1
2
1 0 Microphone
3
1 1 Line Output Loopback
Table 9. ADC Input Selector
DS139PP2
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 -34.5 dB
Table 5. AUX1 & AUX2 & LINE Mixer Gain
XTAL1
XTAL2
CFS2 CFS1 CFS0 24.576 MHz 16.9344MHz
0 000
8.0 kHz 5.51 kHz
1 001
16.0 kHz 11.025 kHz
2 0 1 0 27.42 kHz 18.9 kHz
3 011
32.0 kHz 22.05 kHz
4 100
N/A
37.8 kHz
5 101
N/A
44.1 kHz
6 110
48.0 kHz 33.075 kHz
7 111
9.6 kHz 6.62 kHz
Table 8. Sample Frequency Select
FMT1 FMT0 C/L Audio Data Format
0 0 0 0 Linear, 8-bit unsigned
1 0 0 1 µ-Law, 8-bit
2 0 1 0 Linear, 16-bit, 2’s C, LEnd.
3 0 1 1 A-Law, 8-bit
5 1 0 1 ADPCM, 4-bit IMA
6 1 1 0 Linear, 16-bit, 2’sC, BEnd.
Table 10. Audio Data Format
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