SAM3N00A Atmel Corporation, SAM3N00A Datasheet - Page 482

• Manufacturer Part Number: SAM3N00A
• Manufacturer: Atmel Corporation

Figure 28-23. Multi-master Flowchart
482
482
SAM3N
SAM3N
DADR + SVDIS + MSEN + CLK + R / W
No
No
No
Yes
Program the Master mode
Programm the SLAVE mode:
SADR + MSDIS + SVEN
Read TWI_RHR
Read Status Register
Read Status Register
a master access ?
TXCOMP = 1 ?
EOSACC = 1 ?
ARBLST = 1 ?
SVACC = 1 ?
START
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Data to read?
RXRDY= 0 ?
GACC = 1 ?
No
Yes
No
Yes
Read Status Register
TWI_CR = STOP
TXCOMP = 0 ?
Stop Transfer
MREAD = 1 ?
No
programming sequence
GENERAL CALL TREATMENT
Read TWI_RHR
Decoding of the
Change SADR
SVREAD = 0 ?
RXRDY= 0 ?
Prog seq
OK ?
No
Data to send ?
TXRDY= 0 ?
Yes
No
No
Yes
No
No
No
No
Yes
Yes
Write in TWI_THR
Write in TWI_THR
TXRDY= 1 ?
11011A–ATARM–04-Oct-10
11011A–ATARM–04-Oct-10
Yes
No