AT91SAM9260B-QU Atmel, AT91SAM9260B-QU Datasheet - Page 642

• Manufacturer Part Number: AT91SAM9260B-QU
• Description: IC ARM9 MCU 208-PQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9260B-QU

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: POR, WDT
• Number Of I /o: 96
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: ROM
• Ram Size: 24K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 208-MQFP, 208-PQFP
• Package: 208PQFP
• Device Core: ARM926EJ-S
• Family Name: 91S
• Maximum Speed: 180 MHz
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Number Of Programmable I/os: 96
• Interface Type: EBI/Ethernet/SPI/TWI/UART/USART/USB
• On-chip Adc: 4-chx10-bit
• Number Of Timers: 6
• Processor Series: AT91SAMx
• Core: ARM926EJ-S
• Data Ram Size: 8 KB
• Maximum Clock Frequency: 180 MHz
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM9260-EK
• Minimum Operating Temperature: - 40 C
• Cpu Family: AT91
• Device Core Size: 32b
• Frequency (max): 180MHz
• Total Internal Ram Size: 8KB
• # I/os (max): 96
• Number Of Timers - General Purpose: 6
• Operating Supply Voltage (typ): 1.8/3.3V
• Operating Supply Voltage (max): 1.95/3.6V
• Operating Supply Voltage (min): 1.65/3V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 208
• Package Type: PQFP
• For Use With: AT91SAM9260-EK - KIT EVAL FOR AT91SAM9260AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 36-10. Bank Swapping in Data OUT Transfers for Ping-pong Endpoints
642
AT91SAM9260
1 st Data Payload
2 nd Data Payload
3 rd Data Payload
Microcontroller
Write and Read at the Same Time
load sent by the host, while the current data payload is received by the USB device. Thus two
banks of memory are used. While one is available for the microcontroller, the other one is locked
by the USB device.
When using a ping-pong endpoint, the following procedures are required to perform Data OUT
transactions:
1. The host generates a Data OUT packet.
2. This packet is received by the USB device endpoint. It is written in the endpoint’s FIFO
3. The USB device sends an ACK PID packet to the host. The host can immediately send
4. The microcontroller is notified that the USB device has received a data payload, polling
5. The number of bytes available in the FIFO is made available by reading RXBYTECNT
6. The microcontroller transfers out data received from the endpoint’s memory to the
7. The microcontroller notifies the USB peripheral device that it has finished the transfer
8. A third Data OUT packet can be accepted by the USB peripheral device and copied in
9. If a second Data OUT packet has been received, the microcontroller is notified by the
10. The microcontroller transfers out data received from the endpoint’s memory to the
Bank 0.
a second Data OUT packet. It is accepted by the device and copied to FIFO Bank 1.
RX_DATA_BK0 in the endpoint’s UDP_CSRx register. An interrupt is pending for this
endpoint while RX_DATA_BK0 is set.
in the endpoint’s UDP_CSRx register.
microcontroller’s memory. Data received is made available by reading the endpoint’s
UDP_FDRx register.
by clearing RX_DATA_BK0 in the endpoint’s UDP_CSRx register.
the FIFO Bank 0.
flag RX_DATA_BK1 set in the endpoint’s UDP_CSRx register. An interrupt is pending
for this endpoint while RX_DATA_BK1 is set.
microcontroller’s memory. Data received is available by reading the endpoint’s
UDP_FDRx register.
Bank 0
Endpoint 1
Bank 1
Endpoint 1
Bank 0
Endpoint 1
Write
USB Device
Bank 0
Endpoint 1
Bank 1
Endpoint 1
Bank 0
Endpoint 1
Read
USB Bus
2 nd Data Payload
3 rd Data Payload
1 st Data Payload
Data IN Packet
Data IN Packet
Data IN Packet
6221I–ATARM–17-Jul-09