ATtiny88 datasheet(145/266 Pages) ATMEL

145 / 266 page

145

8008C–AVR–03/09

ATtiny48/88

Figure 15-16. Formats and States in the Slave Receiver Mode

15.7.4

Slave Transmitter Mode

In the Slave Transmitter mode, a number of data bytes are transmitted to a Master Receiver

(see Figure 15-17). All the status codes mentioned in this section assume that the prescaler bits

are zero or are masked to zero.

Figure 15-17. Data Transfer in Slave Transmitter Mode

SLA

DATA

$60

$80

$88

$68

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

From master to slave

From slave to master

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

P or S

DATA

$80

$A0

P or S

ADATAA

$70

$90

$98

$78

P or S

DATA

$90

$A0

P or S

General Call

Arbitration lost as master and

addressed as slave by general call

DATA

Device 3

Device n

SDA

SCL

........

Device 2

MASTER

RECEIVER

Device 1

SLAVE

TRANSMITTER

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