AT91SAM9G10-EK Atmel, AT91SAM9G10-EK Datasheet - Page 586

• 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

36.2
Figure 36-1. Block Diagram
586
AHB
AHB
uhp_int
UHPCK
MCK
Master
Block Diagram
Slave
AT91SAM9G10
Master Block
Slave Block
Registers
OHCI
HCI
HCI
Access to the USB host operational registers is achieved through the AHB bus slave interface.
The OpenHCI host controller initializes master DMA transfers through the ASB bus master inter-
face as follows:
Memory access errors (abort, misalignment) lead to an “UnrecoverableError” indicated by the
corresponding flag in the host controller operational registers.
The USB root hub is integrated in the USB host. Several USB downstream ports are available.
The number of downstream ports can be determined by the software driver reading the root
hub’s operational registers. Device connection is automatically detected by the USB host port
logic.
Warning: A pull-down must be connected to DP on the board. Otherwise the USB host will per-
manently detect a device connection on this port.
USB physical transceivers are integrated in the product and driven by the root hub’s ports.
Over current protection on ports can be activated by the USB host controller. Atmel’s standard
product does not dedicate pads to external over current protection.
Control
• Fetches endpoint descriptors and transfer descriptors
• Access to endpoint data from system memory
• Access to the HC communication area
• Write status and retire transfer Descriptor
Data
List Processor
FIFO 64 x 8
Regsisters
ED & TD
Block
Root Hub
Host SIE
and
Hub Registers
PORT S/M
PORT S/M
OHCI Root
v2.0 Full-speed Transceiver
USB transceiver
USB transceiver
Embedded USB
6462A–ATARM–03-Jun-09
DM
DM
DP
DP