AT91RM3400-AI-001 ATMEL [ATMEL Corporation], AT91RM3400-AI-001 Datasheet - Page 257

• Manufacturer Part Number: AT91RM3400-AI-001
• Manufacturer: ATMEL [ATMEL Corporation]

Figure 89. TWI Read in Master Mode
1790A–ATARM–11/03
Yes
TWI_CR = TWI_SVDIS + TWI_MSEN
Set the Master Mode register:
Internal address size = 0?
Read ==> bit MREAD = 0
TWI_CR = TWI_START
Set the control register:
- Device slave address
TWI_CR = TWI_STOP
- Internal address size
- Transfer direction bit
TWI_CWGR = clock
Read status register
Read status register
Start the transfer
Stop the transfer
- Master enable
- Slave disable
TXCOMP = 0?
Set TWI clock:
Data to read?
RXRDY = 0?
Yes
START
END
Yes
Yes
Set theinternal address
TWI_IADR = address
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