Usb Suspend Interrupt - Renesas M16C Series User Manual

M30240 Group

3.2.12 USB Suspend Interrupt

In the event that a suspend signal is received from the host CPU, the USB function control unit sets the
interrupt status flag of the USB Suspend Interrupt Status register (SUSPIC) and the USB suspend signal
detection flag of the USB power processing register (USBPM) to "1." The USB suspend interrupt
processing routine should then be called.
Figure 3.34 to Figure 3.36 show the procedures for initializing the USB Suspend interrupt.
Initialize USB Interrupt Control Register
b7
Figure 3.34: Initializing the USB Suspend interrupt (1)
Rev.1.00 Sep 24, 2003 Page 321 of 360
M ain
b0
USB Suspend Interrupt Control Register
0
SUSPIC
Interrupt Priority Lefvel Selection Bit
b2 b1 b0
0 0 0 : Level 0 (Interrupt disabled)
0 0 1 : Level 1
0 1 0 : Level 2
0 1 1 : Level 3
1 0 0 : Level 4
1 0 1 : Level 5
1 1 0 : Level 6
1 1 1 : Level 7
Interrupt Request Bit
0 : No interrupt requests
NOP
NOP
I = 1
Universal Serial Bus
Address
0044
16