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STA309B 데이터시트(PDF) 16 Page - STMicroelectronics

부품명 STA309B
상세설명  Multichannel digital audio processor with FFX짰
PDF  66 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA309B 데이터시트(HTML) 16 Page - STMicroelectronics

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I2C bus operation
STA309B
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Doc ID 022570 Rev 2
the 9th-bit time. The byte following the device identification byte is the internal space
address.
5.3
Write operation
Following the START condition the master sends a device select code with the RW bit set
to 0. The STA309B acknowledges this and then waits for the byte of internal address.
After receiving the internal byte address the STA309B again responds with an
acknowledgement.
5.3.1
Byte write
In the byte write mode the master sends one data byte, this is acknowledged by the FFX
core. The master then terminates the transfer by generating a STOP condition.
5.3.2
Multi-byte write
The multi-byte write modes can start from any internal address. The master generating a
STOP condition terminates the transfer.
Figure 4.
Write mode sequence
Figure 5.
Read mode sequence
DEV-ADDR
ACK
START
RW
SUB-ADDR
ACK
DATA IN
ACK
STOP
BYTE
WRITE
DEV-ADDR
ACK
START
RW
SUB-ADDR
ACK
DATA IN
ACK
STOP
MULTIBYTE
WRITE
DATA IN
ACK
DEV-ADDR
ACK
START
RW
DATA
NO ACK
STOP
CURRENT
ADDRESS
READ
DEV-ADDR
ACK
START
RW
SUB-ADDR
ACK
DEV-ADDR
ACK
STOP
RANDOM
ADDRESS
READ
DATA
NO ACK
W
R
T
R
A
T
S
DEV-ADDR
ACK
START
DATA
ACK
DATA
ACK
STOP
SEQUENTIAL
CURRENT
READ
DATA
NO ACK
DEV-ADDR
ACK
START
RW
SUB-ADDR
ACK
DEV-ADDR
ACK
SEQUENTIAL
RANDOM
READ
DATA
ACK
W
R
T
R
A
T
S
DATA
ACK
NO ACK
STOP
DATA
RW=
HIGH



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