SAM3A4C Atmel Corporation, SAM3A4C Datasheet - Page 737
SAM3A4C
Manufacturer Part Number
SAM3A4C
Description
Manufacturer
Atmel Corporation
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Notes:
33.10.6
Figure 33-32. Read Write Flowchart in Slave Mode
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
1. In this case, if TWI_THR has not been written at the end of the read command, the clock is automatically stretched before
2. TXCOMP is only set at the end of the transmission because after the repeated start, SADR is detected again.
Read Write Flowcharts
the ACK.
No
No
SADR + MSDIS + SVEN
Set the SLAVE mode:
Read Status Register
EOSACC = 1 ?
TXCOMP = 1 ?
SVACC = 1 ?
No
END
The flowchart shown in
in Slave mode. A polling or interrupt method can be used to check the status bits. The interrupt
method requires that the interrupt enable register (TWI_IER) be configured first.
GACC = 1 ?
Figure 33-32 on page 737
No
programming sequence
Read TWI_RHR
SVREAD = 0 ?
RXRDY= 0 ?
Decoding of the
Change SADR
Prog seq
OK ?
No
gives an example of read and write operations
No
GENERAL CALL TREATMENT
No
Write in TWI_THR
TXRDY= 1 ?
SAM3X/A
SAM3X/A
No
737
737
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