AT91RM9200-CI-002 Atmel, AT91RM9200-CI-002 Datasheet - Page 599

• Manufacturer Part Number: AT91RM9200-CI-002
• Description: IC ARM9 MCU 256 BGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91RM9200-CI-002

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 180MHz
• Connectivity: EBI/EMI, Ethernet, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: POR
• Number Of I /o: 122
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: ROM
• Ram Size: 48K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 256-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

35.4.2
1768I–ATARM–09-Jul-09
Host Controller Driver
Figure 35-3. USB Host Drivers
USB Handling is done through several layers as follows:
Class driver: handles standard devices. This acts as a generic driver for a class of devices, for
example the HID driver.
• Host controller hardware and serial engine: Transmit and receive USB data on the bus.
• Host controller driver: Drives the Host controller hardware and handle the USB protocol
• USB Bus driver and hub driver: Handles USB commands and enumeration. Offers a
• Mini driver: Handles device specific commands.
hardware independent interface.
Mini Driver
Host Controller Hardware
USBD Driver
Host Controller Driver
User Application
Class Driver
HUB Driver
Class Driver
User Space
Kernel Drivers
Hardware
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