AT91SAM9G45-CU-999 Atmel, AT91SAM9G45-CU-999 Datasheet - Page 493

• Manufacturer Part Number: AT91SAM9G45-CU-999
• Description: IC MCU ARM9 APMC 324TFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G45-CU-999

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, MMC, SPI, SSC, UART/USART, USB
• Peripherals: AC'97, DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 160
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 324-TFBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Supplier Unconfirmed

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