AN2109 Freescale Semiconductor / Motorola, AN2109 Datasheet - Page 8

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

3 MPC555 Interrupt System
USIU
Real-time clock
SW Watchdog
Figure 1
ing with the MPC555 core and working out to the peripheral devices.
Decrementer
TPU3
Timebase
A
PLL
PIT
[16]
contains a block diagram of the overall interrupt system. This system will be discussed by start-
TPU3
[2]
[2]
B
[16]
This application note will assume the exception relocation feature is not used.
U BUS
8
SIMASK
SIPEND
MIOS1
SIVEC
NMI control
BDM Debug
[20]
Freescale Semiconductor, Inc.
SIEL
UIPEND
For More Information On This Product,
Figure 1 Overall MPC555 Interrupt System
IRQ[0]
QADC64
8
A
8-32
8
[4]
Rev. 0, 26 July 2001
MPC555 Interrupts
IMB3 BUS
IREQ
Go to: www.freescale.com
QADC64
UMCR[ IRQMUX
B
USIU Interrupt
[4]
UIMB Interface
Controller
IRQOUT
&
TOUCAN
NOTE
MSR[EE]
A
]
[19]
TOUCAN
Instruction Buffer
B
SSR1
[19]
Vector Table
n+0x100
n+0x500
n+0x900
SSR0
QSMCM
interrupts
external
IRQ[0:7]
[15]
PowerPC
Core
flags for module in [ ]
Possible Interrupt
Address
Instruction Code
0XFFF 0000
Exception
at X0 or
Vector
Table
MOTOROLA
8