Interrupt Controller (INTC)
MPC5510 Microcontroller Family Reference Manual, Rev. 1
Freescale Semiconductor
9-3
Preliminary
Figure 9-1. INTC Block Diagram
Peripheral
Bus
Processor 0
Hardware
Vector Enable
Software
Set/Clear
Interrupt
Registers
Flag Bits
Priority
Select
Registers
Peripheral
Interrupt
Requests
Priority
Arbitrator
Request
Selector
Block
Configuration
Register
1
Highest Priority
4
Priority
Comparator
Slave
Interface
for Reads
& Writes
1
Processor 0 Push/Update/Acknowledge
1
1
1
Update Interrupt Vector
1
Interrupt
Request to
Processor 0
Memory Mapped Registers
Non-Memory Mapped Logic
Pushed
Priority
Processor 1
Current
Priority
Register
4
Popped
Priority
4
New
Priority
4
Current
Priority
4
Priority
Comparator
Highest Priority
4
Highest
Priority
Interrupt
Requests
294
Vector
Encoder
Processor 1
Interrupt
Acknowledge
Register
Processor 1
End of
Interrupt
Register
Processor 0
End of
Interrupt
Register
1
Processor 1
Interrupt
Vector
9
294
Interrupt
Vector
9
Request
Selector
Priority
Arbitrator
Highest
Priority
Interrupt
Requests
294
294
Vector
Encoder
Interrupt
Vector
9
Processor 0
Interrupt
Acknowledge
Register
Processor 0
Interrupt
Vector
9
286
294
Processor 1
Hardware
Vector Enable
Vector Table
Entry Size
Processor 1 Push/Update/Acknowledge
Interrupt
Request to
Processor 1
Processor 1 Pop
1
1
1
Update Interrupt
Vector
1
1
Interrupt
Acknowledge
from
Processor 1
8
294 x
6-bits
294 x
6-bits
New
Priority
4
Current
Priority
4
Processor 0
Current
Priority
Register
Processor 0
Priority
LIFO
Processor 0 Pop
Processor 1 Pop
Processor 1 Push/Update/Acknowledge 1
1
Interrupt
Acknowledge
from
Processor 0
1
Lowest
Vector
Interrupt
Request
Lowest
Vector
Interrupt
Request
Processor 1
Priority
LIFO
1
Vector Table
Entry Size
Pushed
Priority
4
Popped
Priority
4
NOTE: Processor 0 is Z1 and Processor 1 is Z0.