Rainbow Electronics AT89C51SND1C - Manual (Page 163)

163
AT8xC51SND1C
4109E–8051–06/03
Figure 125. Format and States in the Master Transmitter Mode
Data
20h
A SLA
08h
MT
MR
Successful transmis-
sion to a slave receiver
Next transfer started with
a repeated start condition
Not acknowledge received
after the slave address
Arbitration lost in slave
address or data Byte
Arbitration lost and
addressed as slave
Not acknowledge received
Data A From master to slave
From slave to master
Any number of data Bytes and their associated
acknowledge bits
This number (contained in SSSTA) corresponds
to a defined state of the TWI bus
S W
18h
A P
28h
SLA S W
R
A P
10h
30h
A P
38h
A or A
continues
Other master
38h
A or A
continues
Other master
68h
A
continues
Other master
78h B0h
nnh
after a data Byte
To corresponding
states in slave mode