Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK データシート
製品コード
AT91SAM9G25-EK
616
SAM9G25 [DATASHEET]
11032D–ATARM–10-Mar-2014
Figure 33-3. UHP Clock Trees
33.5.3 Interrupt
The USB host interface has an interrupt line connected to the Advanced Interrupt Controller (AIC).
Handling USB host interrupts requires programming the AIC before configuring the UHP HS.
33.6
Functional Description
33.6.1 UTMI transceivers Sharing
The High Speed USB Host Port A is shared with the High Speed USB Device port and connected 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.
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.
UTMI transceiver
EHCI
User
Interface
AHB
UHP4
8
M
OHCI
User
Interface
USB 2.0 EHCI
Host Controller
USB 1.1 OHCI
Host Controller
Root Hub
and
Host SIE
Port
Router
UPLL (480 MHz)
30 MHz
30 MHz
UHP12M
OHCI
Master
Interface
EHCI
Master
Interface
MCK
OHCI clocks
UTMI transceiver
FS transceiver