msm7732 ETC-unknow, msm7732 Datasheet - Page 8

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

¡ Semiconductor
DEN, EXCK, DIO
Serial control ports for microcontroller interface.
Reading and writing data is performed by an external CPU through these pins. Eight registers
with eight bits are provided on the device.
DEN is the "Enable" control signal input, EXCK is the data shift clock input, DIO is the data
input/output. Figure 3 shows the timing. Table 1 shows the register map.
Register
Name
CR0
CR1
CR2
CR3
CR4
CR5
CR6
CR7
D EN
EXCK
DIO (I)
DEN
EXCK
DIO (O)


 
A2
0
0
0
0
1
1
1
1
Address
A1
0
0
1
1
0
0
1
1
A0
0
1
0
1
0
1
0
1
W
R
Side Tone
ON/OFF
ON/OFF
DTMF/
Others
GAIN2
VOX
VOX
OUT
SEL
SEL
A/m
B7
—
TX
—
A2
A2
Figure 3 Serial Control Port Access
A1
A1
R/W: Read/Write enable
Side Tone
TX NOISE
GAIN2
GAIN1
AOUT
TONE
SEND
LVL1
LVL1
PON
B6
ON
TX
—
—
A0
A0
(a) Write Timing
(b) Read Timing
Side Tone
TX NOISE
B7
B7
GAIN1
GAIN0
VFRO
LVL0
LVL0
SAO/
PDN
ALL
B5
ON
TX
—
—
Table 1
B6
B6
ON/OFF
TONE4
GAIN0
TONE
B5
B5
PDN
Description
B4
TX
—
TX
—
—
—
B4
B4
R: Read only register
ON/OFF
SHORT
FRAME
TONE3
GAIN3
TONE
PDN
B3
RX
RX
—
—
—
B3
B3
B2
B2
TONE2
GAIN2
GAIN2
TONE
SLP
SW
B2
RX
DE
—
—
—
B1
B1
B0
B0
TONE1
GAIN1
GAIN1
TONE
SLP
SEL
SW
C/A
B1
RX
—
—
—
TONE0
GAIN0
GAIN0
TONE
LNR
PAD
MSM7732
B0
RX
RX
—
—
—
R/W
8/23
R/W
R/W
R/W
R/W
R/W
R/W
—
R