AT91SAM9G10-EK Atmel, AT91SAM9G10-EK Datasheet - Page 354

• Manufacturer Part Number: AT91SAM9G10-EK
• Description: KIT DEV FOR SAM9G10 ARM
• Manufacturer: Atmel
• Type: MCUr

Specifications of AT91SAM9G10-EK

• Contents: Board, Cables, Power Supply
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Kit Contents: Board
• Svhc: No SVHC (15-Dec-2010)
• Mcu Supported Families: AT91SAM9G10, ARM926EJ-S
• Tool / Board Applications: Microcontroller
• Rohs Compliant: Yes
• For Use With/related Products: *
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Figure 30-7.
354
(from master)
(from slave)
TXEMPTY
NPCS0
SPCK
TDRE
AT91SAM9G10
MOSI
RDRF
MISO
SPI_TDR
Write in
Status Register Flags Behavior
Figure 30-7
Transmission Register Empty (TXEMPTY) status flags behavior within the SPI_SR (Status Reg-
ister) during an 8-bit data transfer in fixed mode and no Peripheral Data Controller involved.
Figure 30-8
of TX buffer (ENDTX), RX Buffer Full (RXBUFF) and TX Buffer Empty (TXBUFE) status flags
behavior within the SPI_SR (Status Register) during an 8-bit data transfer in fixed mode with the
Peripheral Data Controller involved. The PDC is programmed to transfer and receive three data.
The next pointer and counter are not used. The RDRF and TDRE are not shown because these
flags are managed by the PDC when using the PDC.
MSB
1
MSB
shows Transmission Register Empty (TXEMPTY), End of RX buffer (ENDRX), End
shows Transmit Data Register Empty (TDRE), Receive Data Register (RDRF) and
2
6
6
3
5
5
4
4
4
5
3
3
6
6
2
2
7
1
1
shift register empty
8
LSB
LSB
6462A–ATARM–03-Jun-09
RDR read