AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 915

• Manufacturer Part Number: AT32UC3C2512C Automotive
• Manufacturer: Atmel Corporation

32.7.1.10
Register Name:
Access Type:
Offset:
Read Value:
• DRDSTATE: Dual Role Device State
9166C–AVR-08/11
DRDSTATE
10
11
31
23
15
0
1
2
3
4
5
6
7
8
9
7
-
-
-
-
This field indicates the state of the USBC.
Finite State Machine Status Register
Description
a_idle state: this is the start state for A-devices (when the ID pin is 0)
a_wait_vrise: In this state, the A-device waits for the voltage on VBUS to rise above the A-
device VBUS Valid threshold (4.4 V).
a_wait_bcon: In this state, the A-device waits for the B-device to signal a connection.
a_host: In this state, the A-device that operates in host mode is operational.
a_suspend: The A-device operating as a host is in the suspend mode.
a_peripheral: The A-device operates as a peripheral.
a_wait_vfall: In this state, the A-device waits for the voltage on VBUS to drop below the A-
device Session Valid threshold (1.4 V).
a_vbus_err: In this state, the A-device waits for recovery of the over-current condition that
caused it to enter this state.
a_wait_discharge: In this state, the A-device waits for the data usb line to discharge (100 us).
b_idle: this is the start state for B-device (when the ID pin is 1).
The USBC controller operates in device mode.
b_peripheral: In this state, the B-device acts as the peripheral.
b_wait_begin_hnp: In this state, the B-device is in suspend mode and waits until 3 ms before
initiating the HNP protocol if requested.
30
22
14
6
-
-
-
-
USBFSM
Read-Only
0x082C
0x00000009
29
21
13
5
-
-
-
-
28
20
12
4
-
-
-
-
27
19
11
3
-
-
-
26
18
10
2
-
-
-
DRDSTATE
25
17
9
1
-
-
-
AT32UC3C
24
16
8
0
-
-
-
915