AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 493

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

31.8.7
Figure 31-14. SMBUS Quick Command
31.8.8
493
AT91SAM9G45
SMBUS Quick Command (Master Mode Only)
Read-write Flowcharts
The TWI interface can perform a Quick Command:
The following flowcharts shown in
31-18 on page
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.
1. Configure the master mode (DADR, CKDIV, etc.).
2. Write the MREAD bit in the TWI_MMR register at the value of the one-bit command to
3. Start the transfer by setting the QUICK bit in the TWI_CR.
be sent.
TXCOMP
Write QUICK command in TWI_CR
TXRDY
497,
TWD
Figure 31-19 on page 498
S
DADR
Figure 31-16 on page
R/W
and
A
Figure 31-20 on page 499
P
495,
Figure 31-17 on page
6438F–ATARM–21-Jun-10
give examples for
496,
Figure