AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 906

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

32.7.1.2
Register Name:
Access Type:
Offset:
Reset Value:
• CLKUSABLE: Generic Clock Usable
• SPEED: Speed Status
• VBUS: VBUS Level
• ID: USB_ID Pin state
• VBUSRQ: VBUS Request
9166C–AVR-08/11
STOI
31
23
15
7
-
-
-
This bit is cleared when the USB generic clock is not usable.
This bit is set when the USB generic clock (that should be 48 Mhz) is usable.
This field is set according to the controller speed mode.
SPEED
This bit is cleared when the VBUS line level is low, even if USBE is zero.
This bit is set when the VBUS line level is high, 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, even if USBE is zero.
0: The USB_VBOF output pin is driven low to disable the VBUS power supply generation.
1: The USB_VBOF output pin is driven high to enable the VBUS power supply generation.
This bit is cleared when USBSTACLR.VBUSRQC is written to one or when a VBUS error occurs while VBUSHWC is zero.
This bit is set when USBSTASET.VBUSRQS is written to one.
This bit should only be used in host mode.
00
01
10
11
General Status Register
CLKUSABLE
HNPERRI
30
22
14
6
-
-
USBSTA
Read-Only
0x0804
0x00000000
Speed Status
full-speed mode
Reserved
low-speed mode
Reserved
ROLEEXI
29
21
13
5
-
-
SPEED
BCERRI
28
20
12
4
-
-
VBERRI
VBUS
27
19
11
3
-
-
SRPI
26
18
10
ID
2
-
-
VBUSRQ
VBUSTI
25
17
9
1
-
-
AT32UC3C
IDTI
24
16
8
0
-
-
-
906