ez80f92 ZiLOG Semiconductor, ez80f92 Datasheet - Page 157

• Manufacturer Part Number: ez80f92
• Description: Ez80acclaim Flash Microcontrollers
• Manufacturer: ZiLOG Semiconductor

PS015313-0508
Table 81. I
If 10-bit addressing is being used, the slave is first addressed using the full 10-bit address
plus the Write bit. The master then issues a restart followed by the first part of the 10-bit
address again, but with the Read bit. The status code then becomes
responsibility of the slave to remember that it had been selected prior to the restart.
If a repeated START condition is received, the status code is
After each data byte is received, the IFLG is set and one of the status codes listed in
Table 82
Code
48h
38h
68h
78h
B0h
R = Read bit; that is, the lsb is set to 1.
is in the I2C_SR register.
2
I
Addr + R
transmitted, ACK not
received
Arbitration lost
Arbitration lost,
SLA+W received,
ACK transmitted
Arbitration lost,
General call addr
received, ACK
transmitted
Arbitration lost,
SLA+R received,
ACK transmitted
C Master Receive Status Codes (Continued)
2
C State
Microcontroller Response Next I
For a 7-bit address:
Set STA, clear IFLG
Or set STP, clear IFLG
Or set STA & STP,
clear IFLG
For a 10-bit address:
Write extended address byte
to DATA, clear IFLG
Clear IFLG
Or set STA, clear IFLG
Clear IFLG, clear AAK = 0
Or clear IFLG, set AAK = 1
Same as code 68h
Write byte to DATA,
clear IFLG, clear AAK = 0
Or write byte to DATA,
clear IFLG, set AAK = 1
10h
Transmit repeated
START
Transmit STOP
Transmit STOP then
START
Transmit extended
address byte
Return to idle
Transmit START when
bus is free
Receive data byte,
transmit NACK
Receive data byte,
transmit ACK
Same as code 68h
Transmit last byte,
receive ACK
Transmit data byte,
receive ACK
Product Specification
instead of
40h
I2C Serial I/O Interface
2
C Action
or
48h
08h
. It is the
.
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