at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 398
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at91sam9260-cj
Manufacturer Part Number
at91sam9260-cj
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9260-CJ.pdf
(790 pages)
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Figure 31-18. TWI Read Operation with Single Data Byte and Internal Address
BEGIN
Set TWI clock
(CLDIV, CHDIV, CKDIV) in TWI_CWGR
(Needed only once)
Set the Control register:
- Master enable
TWI_CR = MSEN + SVDIS
Set the Master Mode register:
- Device slave address
- Internal address size (IADRSZ)
- Transfer direction bit
Read ==> bit MREAD = 1
Set the internal address
TWI_IADR = address
Start the transfer
TWI_CR = START | STOP
Read Status register
No
RXRDY = 1?
Yes
Read Receive Holding register
Read Status register
No
TXCOMP = 1?
Yes
END
AT91SAM9260
398
6221G–ATARM–31-Jan-08
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