at32uc3b0512-z2ues ATMEL Corporation, at32uc3b0512-z2ues Datasheet - Page 415

• Manufacturer Part Number: at32uc3b0512-z2ues
• Description: 32-bit Avr Microcontroller
• Manufacturer: ATMEL Corporation

22.8.1.2
Register Name:
Access Type:
Offset:
Reset Value:
•
•
•
•
32059J–12/2010
SPEED: Speed Status
VBUS: VBus Level
ID: USB_ID Pin State
VBUSRQ: VBus Request
STOI
31
23
15
7
-
-
-
This field is set according to the controller speed mode. This field shall only be used in device mode.
This bit is set when the VBus line level is high, even if USBE is zero.
This bit is cleared when the VBus line level is low, even if USBE is zero.
This bit can be used in device mode to monitor the USB bus connection state of the application.
This bit is cleared when the USB_ID level is low, even if USBE is zero.
This bit is set when the USB_ID level is high, event if USBE is zero.
This bit is set when the USBSTASET.VBUSRQS bit is written to one.
This bit is cleared when the USBSTACLR.VBUSRQC bit is written to one or when a VBus error occurs and VBUSHWC is zero.
1: The USB_VBOF output pin is driven high to enable the VBUS power supply generation.
0: The USB_VBOF output pin is driven low to disable the VBUS power supply generation.
This bit shall only be used in host mode.
X
0
1
General Status Register
SPEED
30
22
14
6
-
-
-
USBSTA
Read-Only
0x0804
0x00000400
0
0
1
ROLEEXI
29
21
13
5
-
-
Speed Status
Full-Speed mode
Low-Speed mode
Reserved
SPEED
BCERRI
28
20
12
4
-
-
VBERRI
VBUS
27
19
11
3
-
-
26
18
10
ID
2
-
-
VBUSRQ
VBUSTI
25
17
9
1
-
-
AT32UC3B
IDTI
24
16
8
0
-
-
-
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