SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 1094

• Manufacturer Part Number: SAM3X8E
• Manufacturer: Atmel Corporation

39.5.3
39.5.3.1
39.5.3.2
1094
1094
SAM3X/A
SAM3X/A
USB Host Operation
Description of Pipes
Power-On and Reset
For the UOTGHS in host mode, the term “pipe” is used instead of “endpoint” (used in device
mode). A host pipe corresponds to a device endpoint, as described in
1094
Figure 39-21. USB Communication Flow
In host mode, the UOTGHS associates a pipe to a device endpoint, considering the device con-
figuration descriptors.
Figure 39-22 on page 1094
Figure 39-22. Host Mode States
After a hardware reset, the UOTGHS host mode is in the Reset state.
When the UOTGHS is enabled (UOTGHS_CTRL.USBE is one) in host mode (UOTGHS_SR.ID
is zero), it goes to the Idle state. In this state, the controller waits for a device connection with a
from the USB specification.
Clock stopped
describes the UOTGHS host mode main states.
Ready
Macro off
Device
Connection
SOFE = 1
Device
Disconnection
SOFE = 0
Idle
Suspend
Device
Disconnection
<any
other
state>
Figure 39-21 on page
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12