CS4215 Datasheet, PDF (18/52 Pages) Cirrus Logic – 16-Bit Multimedia Audio Codec

CS4215
Control Time Slot 1, Status Register
D7 D6 D5
Register
0
0
1
Reset (R)
0
0
1
D4
MLB
0
D3
OLB
0
D2
CLB
1
D1 D0
RSRV
X
X
BIT
RSRV
CLB
OLB
NAME
Reserved Bits
Control Latch Bit
Output Level Bit
MLB
Microphone Level
VALUE
1
0
1
0
1
FUNCTION
Must be written as 0.
R Ensures proper transition between control and
data mode.
R Line full scale outputs are 2.8 Vpp (1Vrms)
Headphone full scale output is 4.0 Vpp.
Speaker full scale output is 8.0 Vpp.
Line and Headphone full scale outputs are
2.0 Vpp. Speaker full scale output is 4.0 Vpp.
R 20 dB Fixed Gain Enabled
Full scale microphone inputs are 0.288 Vpp.
20 dB Fixed Gain Disabled
Full scale inputs are 2.88 Vpp.
Control Time Slot 2, Data Format Register
D7 D6 D5 D4 D3 D2
Register HPF RSRV DFR2 DFR1 DFR0 ST
Reset (R) 0
X
0
0
0
0
D1 D0
DF1 DF0
0
1
BIT
DF1-0
NAME
Data Format
Selection
ST
DFR2-0
Stereo Bit
Data Conversion
Frequency Selection
RSRV
HPF
Reserved Bit
High Pass Filter
VALUE
00
0
01
1
10
2
11
3
0
1
000 0
001 1
010 2
011 3
100 4
101 5
110 6
111 7
0
1
FUNCTION
16-bit 2^’s-complement linear.
R 8-bit µ−Law.
8-bit A-Law.
8-bit unsigned linear.
R Mono Mode.
Stereo Mode.
XTAL1(kHz) XTAL2 (kHz)
CLKIN (÷) 24.576 MHz 16.9344 MHz
R
3072
8
5.5125
1536
16
11.025
896
27.42857
18.9
768
32
22.05
448
NA
37.8
384
NA
44.1
512
48
33.075
2560
9.6
6.615
Must be written as 0
R Disabled.
Enabled. A Digital High Pass Filter is used to force
the ADC DC offset to zero.
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DS76F2