AT91SAM7S32-AI ATMEL [ATMEL Corporation], AT91SAM7S32-AI Datasheet - Page 255

• Manufacturer Part Number: AT91SAM7S32-AI
• Description: AT91 ARM Thumb-based Microcontrollers
• Manufacturer: ATMEL [ATMEL Corporation]

6071A–ATARM–28-Oct-04
Figure 99. TWI Read in Master Mode
Yes
Set the Master Mode register:
Internal address size = 0?
Read ==> bit MREAD = 0
Set the control register:
- Device slave address
- Internal address size
- Transfer direction bit
TWI_CWGR = clock
Read status register
Read status register
TWI_CR = START
TWI_CR = MSEN
TWI_CR = STOP
Start the transfer
Stop the transfer
- Master enable
- Slave disable
Set TWI clock:
TXCOMP = 0?
Data to read?
RXRDY = 0?
Yes
START
END
AT91SAM7S32 Preliminary
Yes
Yes
Set the internal address
TWI_IADR = address
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