msm7728 Oki Semiconductor, msm7728 Datasheet - Page 16

• Manufacturer Part Number: msm7728
• Description: Single Rail Linear Codec
• Manufacturer: Oki Semiconductor

¡ Semiconductor
FUNCTIONAL DESCRIPTION
Control Data Description
The MSM7728 has eight registers to control the analog pass switch, volume, and tone via an
external CPU.
The data interface consists of 3-bit address data and 5-bit control data in the serial 8-bit format.
The register map is as shown below.
Description of Each Register
CR0 - - - VOL1, VOL2 control
CR0
CR1
CR2
CR3
CR4
CR5
CR6
CR7
A2
0
A1
0
AD2 AD1 AD0
0
0
0
0
1
1
1
1
A0
0
0
0
1
1
0
0
1
1
B4
0
0
1
1
0
1
0
1
0
1
0
1
B3
SW5 SW4 SW3 SW2 SW1
0
1
0
1
B4
—
VOL1
B2
VOL3
0
0
0
0
1
1
1
1
B3
—
Power ON/OFF
Service tone
Ringer tone
PB tone
B1
0
0
1
1
0
0
1
1
B2
—
B0
VOL2
0
1
0
1
0
1
0
1
B1
LA SW6
VOL4
B0
VOL1 gain setting
VOL2 gain setting
VOL1, VOL2 gain setting
VOL3, VOL4 gain setting
SW ON/OFF control
Latch output/SW ON/OFF control
PB tone setting ON/OFF control
Service tone setting ON/OFF control
Ringer tone setting ON/OFF control
Power ON/OFF control
Function
Function
0dB (standard)
6dB
–6dB
–12dB
0dB (standard)
6dB
3dB
–3dB
–6dB
–9dB
–12dB
–15dB
VOL1 and VOL2:
Simultaneous setting
Standard after reset
is released
Remarks
MSM7728
Disable
Disable
Disable
Enable
Enable
Enable
Enable
Enable
Read
16/23