Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK データシート
製品コード
AT91SAM9G25-EK
585
SAM9G25 [DATASHEET]
11032C–ATARM–25-Jan-13
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 tr
a
n
s
ceiver
EHCI
U
s
er
Interf
a
ce
AHB
UHP4
8
M
OHCI
U
s
er
Interf
a
ce
U
S
B 2.0 EHCI
Ho
s
t Controller
U
S
B 1.1 OHCI
Ho
s
t Controller
Root H
ub
a
nd
Ho
s
t
S
IE
Port
Ro
u
ter
UPLL (4
8
0 MHz)
3
0 MHz
3
0 MHz
UHP12M
OHCI
M
as
ter
Interf
a
ce
EHCI
M
as
ter
Interf
a
ce
MCK
OHCI clock
s
UTMI tr
a
n
s
ceiver
F
S
tr
a
n
s
ceiver