at91sam9x25-cu ATMEL Corporation, at91sam9x25-cu Datasheet - Page 22

• Manufacturer Part Number: at91sam9x25-cu
• Description: At91sam Arm-based Embedded Mpu
• Manufacturer: ATMEL Corporation

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USB
SAM9X25
The AT91SAM9X25 features the following USB communication ports:
The High Speed USB Host Port A is shared with the High Speed USB Device port and con-
nected to the second UTMI transceiver. The selection between Host Port A and USB Device is
controlled by the UDPHS enable bit (EN_UDPHS) located in the UDPHS_CTRL control register.
• 2 Hosts (A and B) High Speed (EHCI) and Full Speed (OHCI)
• 1 Host (C) Full Speed only (OHCI)
• 1 Device High Speed
Transceiver
FS
PC
HS USB Host
HS EHCI
FS OHCI
Transceiver
DMA
PB
HS
PA
0
Transceiver
HS
Device
USB
DMA
HS
1
EN_UDPHS
11054AS–ATARM–29-Jul-11