at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 402

• Manufacturer Part Number: at91sam9260-cj
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Figure 31-22. Multi-master Flowchart
START
Programm the SLAVE mode:
SADR + MSDIS + SVEN
Read Status Register
Yes
SVACC = 1 ?
GACC = 1 ?
SVREAD = 0 ?
EOSACC = 1 ?
TXRDY= 1 ?
Yes
Yes
Yes
Write in TWI_THR
TXCOMP = 1 ?
RXRDY= 0 ?
Yes
Yes
Read TWI_RHR
a master access ?
GENERAL CALL TREATMENT
Yes
Decoding of the
programming sequence
Prog seq
OK ?
Change SADR
Program the Master mode
DADR + SVDIS + MSEN + CLK + R / W
Read Status Register
Yes
ARBLST = 1 ?
Yes
MREAD = 1 ?
Yes
Yes
RXRDY= 0 ?
TXRDY= 0 ?
Yes
Yes
Data to read?
Write in TWI_THR
Data to send ?
Read TWI_RHR
Stop transfer
Read Status Register
Yes
TXCOMP = 0 ?
AT91SAM9260
402
6221G–ATARM–31-Jan-08