ATmega48PA Automotive Atmel Corporation, ATmega48PA Automotive Datasheet - Page 234

• Manufacturer Part Number: ATmega48PA Automotive
• Manufacturer: Atmel Corporation

22.7.4
234
Atmel ATmega48PA/88PA/168PA [Preliminary]
Slave Transmitter Mode
Figure 22-16. Formats and States in the Slave Receiver Mode
In the Slave Transmitter mode, a number of data bytes are transmitted to a Master Receiver
(see
bits are zero or are masked to zero.
Figure 22-17. Data Transfer in Slave Transmitter Mode
Reception of the own
slave address and one or
more data bytes. All are
acknowledged
Last data byte received
is not acknowledged
Arbitration lost as master
and addressed as slave
Reception of the general call
address and one or more data
bytes
Last data byte received is
not acknowledged
Arbitration lost as master and
addressed as slave by general call
Figure
SDA
SCL
22-17). All the status codes mentioned in this section assume that the prescaler
From master to slave
From slave to master
TRANSMITTER
Device 1
SLAVE
S
SLA
General Call
Device 2
RECEIVER
MASTER
W
DATA
$60
$68
$70
$78
Device 3
A
A
A
A
n
A
........
DATA
DATA
Any number of data bytes
and their associated acknowledge bits
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
Device n
$80
$90
A
A
V
CC
DATA
DATA
R1
$80
$88
$90
$98
A
A
A
A
R2
9223B–AVR–09/11
P or S
P or S
P or S
P or S
$A0
$A0