AN2109 Freescale Semiconductor / Motorola, AN2109 Datasheet - Page 48

• Manufacturer Part Number: AN2109
• Description: MPC555 Interrupts
• Manufacturer: Freescale Semiconductor / Motorola

Appendix A Table of Potential Interrupt Sources
External
External
External
External
External
External
External
External
Source
PITIRQ
COLIE
REFA
REFB
IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7
Table 22
cal registers to define them. Please refer to the
descriptions.
SEC
ALR
—
RTCSC[RTCIRQ]
RTCSC[RTCIRQ]
COLIR[COLIRQ]
TBSCR[TBIRQ]
TBSCR[TBIRQ]
Level Setting
non-maskable
PISCR[PIRQ]
Table 27
Fixed and
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
Fixed
define all the possible interrupt sources and their corresponding level and the lo-
Table 22 USIU Internal Module Interrupt Sources
Freescale Semiconductor, Inc.
For More Information On This Product,
SIMASK[IRM0] SIPEND[IRQ0]
SIMASK[IRM1] SIPEND[IRQ1]
SIMASK[IRM2] SIPEND[IRQ2]
SIMASK[IRM3] SIPEND[IRQ3]
SIMASK[IRM4] SIPEND[IRQ4]
SIMASK[IRM5] SIPEND[IRQ5]
SIMASK[IRM6] SIPEND[IRQ6]
SIMASK[IRM7] SIPEND[IRQ7]
COLIR[COLIE] COLIR[COLIS]
SCR[REFBE]
Enable Con-
RTCSC[ALE]
RTCSC[SIE]
TBSCR[RE-
PISCR[PIE]
Rev. 0, 26 July 2001
MPC555 Interrupts
FAE]
trol
TB-
Go to: www.freescale.com
TBSCR[REFA]
TBSCR[REFB]
RTCSC[SEC]
RTCSC[ALR]
PISCR[PS]
Decoding
MPC555 User’s Manual (MPC555UM/AD)
Status
It is impossible to disable the IRQ0 input from
causing a non-maskable interrupt on vector
0xn100. It can still be decoded within an
external interrupt handler.
External IRQ1 interrupt which is either falling
edge or level 0 active
External IRQ2 interrupt which is either falling
edge or level 0 active
External IRQ3 interrupt which is either falling
edge or level 0 active
External IRQ4 interrupt which is either falling
edge or level 0 active
External IRQ5 interrupt which is either falling
edge or level 0 active
External IRQ6 interrupt which is either falling
edge or level 0 active
External IRQ7 interrupt which is either falling
edge or level 0 active
Time base counter value is equal to the value
in Time base reference register 0
Time base counter value is equal to the value
in Time base reference register 1
Alarm interrupt for Real time clock module
when RTC count equals the value in RTCAL.
Once per second interrupt for Real time clock
module
Periodic interrupt timer module 16-bit counter
has reached 0 interrupt.
Change in lock status of PLL interrupt from
locked to unlocked or vice-versa.
Function Notes
MOTOROLA
for detailed
48