at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 490
at91sam9263
Manufacturer Part Number
at91sam9263
Description
At91 Arm Thumb Microcontrollers
Manufacturer
ATMEL Corporation
Datasheet
1.AT91SAM9263.pdf
(1065 pages)
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32.5.6
Figure 32-13. TWI Write Operation with Single Data Byte without Internal Address
490
AT91SAM9263 Preliminary
Read/Write Flowcharts
The following flowcharts shown in
page
give examples for read and write operations. A polling or interrupt method can be used to check
the status bits. The interrupt method requires that the interrupt enable register (TWI_IER) be
configured first.
492,
Figure 32-16 on page
(CLDIV, CHDIV, CKDIV) in TWI_CWGR
- Device slave address (DADR)
Set the Master Mode register:
Write ==> bit MREAD = 0
TWI_THR = Data to send
Set the Control register:
Load Transmit register
- Transfer direction bit
Read Status register
Read Status register
(Needed only once)
TWI_CR = MSEN
Transfer finished
- Master enable
TXCOMP = 1?
Set TWI clock
TXRDY = 1?
Yes
Yes
BEGIN
493,
Figure
Figure 32-17 on page 494
32-13,
No
No
Figure 32-14 on page
and
Figure 32-18 on page 495
491,
6249D–ATARM–20-Dec-07
Figure 32-15 on
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