C541U_99 Datasheet, PDF (142/192 Pages) Siemens Semiconductor Group – 8-BIT CMOS MICROCONTROLLER

Interrupt System
C541U
Endpoint n Buffer Control RegisterEPBCn, n=0-4 (Address C1H)
Bit No. MSB
7
6
5
4
3
2
1
C1H STALLn 0
rw
r
0 GEPIEn SOFDEn INCEn 0
r
rw
rw
rw
r
The shaded bits are not used for interrupt control.
Reset Value : 00H
LSB
0
DBMn EPBCn
rw
Bit
GEPIEn
Function
Global endpoint interrupt enable
Bit GEPIEn enables or disables the generation of the global endpoint interrupt forr
endpoint n based on the endpoint specific interrupt request bits in register EPIRn.
If GEPIEn=0, the USB endpoint n interrupt is disabled.
If GEPIEn=1, the USB endpoint n interrupt is enabled.
Note: For accessing the EPBCn registers SFR EPSEL(D2H) must be set with the appropriate
value.
Semiconductor Group
7-9
1997-10-01