Atmel SAM4L Xplained Pro Evaluation Kit Atmel ATSAM4L-XPRO ATSAM4L-XPRO Data Sheet
Product codes
ATSAM4L-XPRO
385
42023E–SAM–07/2013
ATSAM4L8/L4/L2
17.7.2.2
Device Global Interrupt Register
Register Name:
UDINT
Access Type:
Read-Only
Offset:
0x0004
Reset Value:
0x00000000
Note:
1. EPnINT bits are within the range from EP0INT to EP7INT.
• EPnINT: Endpoint n Interrupt
This bit is cleared when the interrupt source is serviced.
This bit is set when an interrupt is triggered by the endpoint n (UESTAn, UECONn). This triggers a USB interrupt if EPnINTE is
one.
• UPRSM: Upstream Resume Interrupt
This bit is cleared when the UDINTCLR.UPRSMC bit is written to one to acknowledge the interrupt (USB clock inputs must be
enabled before).
This bit is set when the USBC sends a resume signal called “Upstream Resume”. This triggers a USB interrupt if UPRSME is
one.
• EORSM: End of Resume Interrupt
This bit is cleared when the UDINTCLR.EORSMC bit is written to one to acknowledge the interrupt.
This bit is set when the USBC detects a valid “End of Resume” signal initiated by the host. This triggers a USB interrupt if
EORSME is one.
• WAKEUP: Wakeup Interrupt
This bit is cleared when the UDINTCLR.WAKEUPC bit is written to one to acknowledge the interrupt (USB clock inputs must be
enabled before).
This bit is set when the USBC is reactivated by a filtered non-idle signal from the lines (not by an upstream resume). This
triggers an interrupt if WAKEUPE is one.
This interrupt is generated even if the clock is frozen by the FRZCLK bit.
• EORST: End of Reset Interrupt
This bit is cleared when the UDINTCLR.EORSTC bit is written to one to acknowledge the interrupt.
This bit is set when a USB “End of Reset” has been detected. This triggers a USB interrupt if EORSTE is one.
• SOF: Start of Frame Interrupt
This bit is cleared when the UDINTCLR.SOFC bit is written to one to acknowledge the interrupt.
This bit is set when either a USB “Start of Frame” PID (SOF) or a Low-speed keep-alive has been detected (every 1 ms). This
triggers a USB interrupt if SOFE is one. The FNUM field is updated.
31
30
29
28
27
26
25
24
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
-
-
-
EP7INT
EP6INT
EP5INT
EP4INT
15
14
13
12
11
10
9
8
EP2INT
EP0INT
-
-
-
-
7
6
5
4
3
2
1
0
-
UPRSM
EORSM
WAKEUP
EORST
SOF
-
SUSP