SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 1116
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SAM3X8E
Manufacturer Part Number
SAM3X8E
Description
Manufacturer
Atmel Corporation
- Current page: 1116 of 1465
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39.6.1.5
Name:
Address:
Access:
• DRDSTATE
This field indicates the state of the UOTGHS.
Refer to the OTG specification for more details.
1116
1116
Value
10
11
12
13
14
15
31
23
15
0
1
2
3
4
5
6
7
8
9
–
–
–
7
–
SAM3X/A
SAM3X/A
General Finite State Machine Register
UOTGHS_FSM
0x400AC82C
Read-only
A_IDLESTATE
A_WAIT_VRISE
A_WAIT_BCON
A_HOST
A_SUSPEND
A_PERIPHERAL
A_WAIT_VFALL
A_VBUS_ERR
A_WAIT_DISCHARGE
B_IDLE
B_PERIPHERAL
B_WAIT_BEGIN_HNP
B_WAIT_DISCHARGE
B_WAIT_ACON
B_HOST
B_SRP_INIT
30
22
14
–
–
–
6
–
Name
29
21
13
–
–
–
5
–
Description
This is the start state for A-devices (when the ID pin is 0)
In this state, the A-device waits for the voltage on VBus to rise above the A-device VBus
Valid threshold (4.4 V).
In this state, the A-device waits for the B-device to signal a connection.
In this state, the A-device that operates in Host mode is operational.
The A-device operating as a host is in the suspend mode.
The A-device operates as a peripheral.
In this state, the A-device waits for the voltage on VBus to drop below the A-device
Session Valid threshold (1.4 V).
In this state, the A-device waits for recovery of the over-current condition that caused it
to enter this state.
In this state, the A-device waits for the data USB line to discharge (100 us).
This is the start state for B-device (when the ID pin is 1).
In this state, the B-device acts as the peripheral.
In this state, the B-device is in suspend mode and waits until 3 ms before initiating the
HNP protocol if requested.
In this state, the B-device waits for the data USB line to discharge (100 us) before
becoming Host.
In this state, the B-device waits for the A-device to signal a connect before becoming B-
Host.
In this state, the B-device acts as the Host.
In this state, the B-device attempts to start a session using the SRP protocol.
28
20
12
–
–
–
4
–
27
19
11
–
–
–
3
26
18
10
–
–
–
2
DRDSTATE
25
17
–
–
9
–
1
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
24
16
–
–
8
–
0
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