Figure 94. Formats and States in the Slave Receiver Mode
Reception of the own
S
SLA
W
A
DATA
A
DATA
A
P or S
slave address and one or
more data bytes. All are
acknowledged
$60
$80
$80
A
$A0
Last data byte received
is not acknowledged
P or S
$88
Arbitration lost as master
and addressed as slave
A
$68
A
Reception of the general call
address and one or more data
bytes
General Call
DATA
A
DATA
A
P or S
$70
$90
$90
$A0
Last data byte received is
not acknowledged
A
P or S
$98
Arbitration lost as master and
addressed as slave by general call
A
$78
Any number of data bytes
and their associated acknowledge bits
From master to slave
From slave to master
DATA
A
This number (contained in TWSR) corresponds
to a defined state of the 2-Wire Serial Bus. The
prescaler bits are zero or masked to zero
n
222
ATmega48/88/168
2545D–AVR–07/04
ATMEL [ ATMEL ]
