MSM7732-01 OKI [OKI electronic componets], MSM7732-01 Datasheet - Page 17

• Manufacturer Part Number: MSM7732-01
• Description: Audio CODEC
• Manufacturer: OKI [OKI electronic componets]

FUNCTIONAL DESCRIPTION
Control Registers
CR0 (Basic operating mode 1)
B7 ………… PCM companding law select; 0/µ-law, 1/A-law
B6 ………… Power on control for output amps (AOUT+, AOUT–); 0/Power down, 1/Power on
B5 ………… Power down (entire system); 0/Power on, 1/Power down
B4 ………… Power down (transmit and amplifier A); 0/Power on, 1/Power down
B3 ………… Power down (receive only); 0/Power on, 1/Power down
B2 ………… Slope filter enable; 0/Slope filter disable, 1/ Slope filter enable
B1 ………… The type of slope filter select; 0/CASE1, 1/CASE2, refer to Figure 6.
B0 ………… PCM interface linear code select;
OKI Semiconductor
Initial Value
CR0
When using this data for power down control, set pin PDN at “1” level.
The control registers are not reset by this signal.
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
500
Figure 6 Frequency Response of Slope Filter
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
B1
FEDL7732-01-10
0
MSM7732-01
4000
LNR
B0
17/29
0