STA323W ST Microelectronics, STA323W Datasheet - Page 10

• Manufacturer Part Number: STA323W
• Description: 2.1 High Efficiency Digital Audio System
• Manufacturer: ST Microelectronics

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STA323W
6.4.1.1Current Address Multi-byte Read
The multi-byte read modes can start from any internal address. Sequential data bytes will be read from
sequential addresses within the STA323W. The master acknowledges each data byte read and then gen-
erates a STOP condition terminating the transfer.
6.4.2 Random Address Byte Read
Following the START condition the master sends a device select code with the RW bit set to 0. The
STA323W acknowledges this and then the master writes the internal address byte. After receiving, the
internal byte address the STA323W again responds with an acknowledgement. The master then initiates
another START condition and sends the device select code with the RW bit set to 1. The STA323W ac-
knowledges this and then responds by sending one byte of data. The master then terminates the transfer
by generating a STOP condition.
6.4.2.1Random Address Multi-byte Read
The multi-byte read modes could start from any internal address. Sequential data bytes will be read from
sequential addresses within the STA323W. The master acknowledges each data byte read and then gen-
erates a STOP condition terminating the transfer.
6.5 Write Mode Sequence
Figure 10. I
6.6 Read Mode Sequence
Figure 11. I
10/41
SEQUENTIAL
SEQUENTIAL
MULTIBYTE
CURRENT
CURRENT
ADDRESS
ADDRESS
RANDOM
RANDOM
4
READ
READ
READ
READ
WRITE
WRITE
BYTE
U
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START
START
START
START
2
2
START
START
C Write Procedure
C Read Procedure
DEV-ADDR
DEV-ADDR
DEV-ADDR
DEV-ADDR
DEV-ADDR
DEV-ADDR
RW=
HIGH
RW
RW
RW
ACK
ACK
ACK
ACK
RW
RW
SUB-ADDR
SUB-ADDR
DATA
DATA
ACK
ACK
NO ACK
ACK
ACK
ACK
SUB-ADDR
SUB-ADDR
START
START
STOP
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DATA
DEV-ADDR
DEV-ADDR
ACK
ACK
RW
RW
ACK
ACK
ACK
DATA IN
DATA IN
DATA
DATA
DATA
ACK
ACK
NO ACK
NO ACK
ACK
STOP
STOP
STOP
DATA
ACK
DATA IN
DATA
ACK
NO ACK
STOP
STOP
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