ET0:=Interrupt controller of Timer-0 interrupt.
0:=(default)
Disable
1:=
Enable
EX0:=Interrupt controller of external interrupt-0.
0:=(default)
Disable
1:=
Enable
SFR: IP (Interrupt Priority Low)
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
-
PPCA_LVD PSPI_ADC
PS
PT1
PX1
PT0
PX0
PPCA_LVD:= If set, Set priority for PCA /LVF interrupt higher
PSPI_ADC := If set, Set priority for SPI/ADC interrupt higher
PS
:= If set, Set priority for serial port interrupt higher(UART)
:= If set, Set priority for timer1 interrupt higher
:= If set, Set priority for external interrupt 1 higher
:= If set, Set priority for timer0 interrupt higher
:= If set, Set priority for external interrupt 0 higher
PT1
PX1
PT0
PX0
SFR: IPH (Interrupt Priority High)
Bit-7
Bit-6
Bit-5
Bit-4
Bit-3
Bit-2
Bit-1
Bit-0
-
PPCAH_LVD PSPIH_ADC
PSH
PT1H
PX1H
PT0H
PX0H
PPCAH_LVD:= If set, Set priority for PCA /LVF interrupt higher
PSPIH_ADC := If set, Set priority for SPI/ADC interrupt higher
PSH
:= If set, Set priority for serial port interrupt higher(UART)
:= If set, Set priority for timer1 interrupt higher
:= If set, Set priority for external interrupt 1 higher
:= If set, Set priority for timer0 interrupt higher
:= If set, Set priority for external interrupt 0 higher
PT1H
PX1H
PT0H
PX0H
IP and IPH are combined to form 4-level priority interrupt as the following table.
Priority
Level
{IPH.x , IP.x}
11
10
01
00
1 (highest)
2
3
4
MEGAWIN
MPC82x54A Data Sheet
31
MEGAWIN [ MEGAWIN TECHNOLOGY CO., LTD ]
