msm7732 ETC-unknow, msm7732 Datasheet - Page 16

• Manufacturer Part Number: msm7732
• Description: Audio Codec
• Manufacturer: ETC-unknow

¡ Semiconductor
FUNCTIONAL DESCRIPTION
Control Registers
(1) CR0 (basic operating mode 1)
Note:
B7 ..... PCM companding law select;
B6 ..... Power on control for op-amps (AOUT+, AOUT–);
B5 ..... Power down (entire system);
B4 ..... Power down (Transmit and AMPA);
B3 ..... Power down (Receive only);
B2 ..... Slope Filter enable;
B1 ..... Slope Filter's frequency response select; 0/CASE1,
B0 ..... PCM interface linear mode select;
CR0
Initial Value
–10
–12
–14
ORed with the inverted PDN signal. When using this data, set pin PDN at "1" level.
0/PCM data,
1/14-bit linear mode (2's complement)
–2
–4
–6
–8
6
4
2
0
Initial values are the values set when reset is activated by the PDN pin.
0
500
SEL
A/m
B7
0
Figure 4 Frequency Response of Slope Filter
1000
AOUT
PON
B6
0
1500
PDN
ALL
B5
0
Frequency [Hz]
0/m-law,
0/Power on, 1/Power down
0/Power on, 1/Power down
0/Power on, 1/Power down
0/Slope Filter disable,
2000
PDN
B4
TX
0
2500
PDN
B3
RX
0
1/A-law
0/Power off, 1/Power on
1/CASE2 Refer to Figure 4.
3000
SLP
B2
0
1/Slope Filter enable
CASE1
CASE2
3500
SLP
SEL
B1
0
MSM7732
LNR
4000
B0
16/23
0