ml7041 Oki Semiconductor, ml7041 Datasheet - Page 9

• Manufacturer Part Number: ml7041
• Description: Audio Codec
• Manufacturer: Oki Semiconductor

SDA, SCL
SDA is the serial data input/output pin and SCL is the serial clock line input pin. A pull-up register of 1 to 10 k is
required for the SDA pin. The master clock is required when data is written or read.
Transfer format
OKI Semiconductor
The control register can be controlled according to the I
The control register address is 3 bits long and the register data is 8 bits long. The methods of writing and
reading of data are shown below.
SDA
SCL
SDA
SCL
SDA
SCL
S
S
S
Sr Repeated START condition
S START condition
P STOP condition
slave address write
slave address write
slave
address
slave
address
ML7041 Slave address “0011010”
7-bit slave address
“0011010”
slave address write
R/W
R/W
“0”
“0”
A
A
Figure 5 I
Figure 4 I
register address write
R/W
register address write
read-back
mode bit
“0”
“0”
read-back
mode bit
“1”
A
2
Figure 3 I
C Interface Read Timing: read-back mode
A
A
A2 A1 A0
A2 A1 A0
2
Acknowledged (ML7041 drive SDA to “0”)
Not Acknowledged
Don’t care (“0” or “1”)
C Interface Read Timing: normal mode
register
address
register
address
register address write
read-back
mode bit
“0”
2
A
A
C Interface Write Timing
B7
A2 A1 A0
Sr
2
register data write
register data
register
address
C bus transfer format.
B6
slave address write
slave
address
B1
A
R/W
B0
“1”
B7 B6 B5 B4 B3 B2 B1 B0
A
A
register data write
B7
register data
B7 B6 B5 B4 B3 B2 B1 B0
register data
register data read
B6
register data read
register data
B1
B0
A
A
P
FEDL7041-04
P
A
ML7041
P
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