msm7732a Oki Semiconductor, msm7732a Datasheet - Page 17

• Manufacturer Part Number: msm7732a
• Description: Audio Codec
• Manufacturer: Oki Semiconductor

FUNCTIONAL DESCRIPTION
Control Registers
CR0 (Basic operating mode 1)
B7
B6
B5
B4
B3
B2
B1
B0
OKI Semiconductor
Initial Value
CR0
PCM companding law select; 0/µ-law, 1/A-law
Power on control for output amps (AOUT+, AOUT–); 0/Power down, 1/Power on
Power down (entire system); 0/Power on, 1/Power down
When using this data for power down control, set pin PDN at “1” level.
The control registers are not reset by this signal.
Power down (transmit and amplifier A); 0/Power on, 1/Power down
Power down (receive only); 0/Power on, 1/Power down
Slope filter enable; 0/Slope filter disable, 1/ Slope filter enable
The type of slope filter select; 0/CASE1, 1/CASE2, refer to Figure 6.
PCM interface linear code select;
0/Companding law selected by CR0-B7
1/14-bit linear code (2’s complement) in spite of CR0-B7
–10
–12
–14
–2
–4
–6
–8
6
4
2
0
0
A/µ SEL
Figure 6 Frequency Response of Slope Filter
500
B7
0
1000
AOUT
PON
B6
0
PDN ALL PDN TX PDN RX
1500
B5
0
Frequency
2000
B4
0
[Hz]
2500
Note: Initial Value: Reset state by PDN
B3
0
3000
SLP
B2
0
CASE1
CASE2
SLP SEL
3500
FEDL7732A-01-01
B1
MSM7732A-01
0
4000
LNR
B0
17/28
0