C541U_99 Datasheet, PDF (140/192 Pages) Siemens Semiconductor Group – 8-BIT CMOS MICROCONTROLLER

Interrupt System
C541U
Special Function Register DPWDR (Address C2H)
Bit No. MSB
7
6
5
4
3
E6H DRVIE 0
0
0
0
rw
r
r
r
r
Reset Value : 00H
LSB
2
1
0
0 TPWD RPWD DPWDR
r
rw rw
Bit
DRVIE
Function
Device request value interrupt enable
Setting bit DRVIE enables the generation of a device interrupt each time the
host sends device request that contains one or more of the following :
- Configuration Value (through SET_CONFIGURATION device request)
- Alternate Setting (through SET_INTERFACE device request)
- Interface (through SET_INTERFACE device request)
If DRVIE=0, the device request value interrupt is disabled.
If DRVIE=1, the device request value interrupt is enabled.
Special Function Register USBPWD ( Address E6H)
Reset Value : 00H
Bit No. MSB
LSB
7
6
5
4
3
2
1
0
E6H
0
0 SUSPIE DADDIE SUSP DADD TPWD RPWD USBPWD
r
r
rw
rw
r
r
rw
rw
Bit
SUSPIE
DADDIE
Function
Suspend Interrupt Enable/Disable bit
0: Suspend interrupt generation is disabled.
1: Suspend interrupt generation is enabled.
Device Attach/Detach Interrupt Enable/Disable bit
0: Interrupt generation upon DADD/P3.1 pin status is disabled.
1: Interrupt generation upon DADD/P3.1 pin status is enabled.
Semiconductor Group
7-7
1997-10-01