Table 4-2 Interrupt Sources - Motorola DSP56309 User Manual

Core Configuration
Interrupt Sources and Priorities
The DSP56309 initialization program loads the table entry for each interrupt serviced
with two interrupt servicing instructions.
In the DSP56309, only 46 of the 128 vector addresses are used for specific interrupt
sources. The remaining 82 are reserved. If you know that certain interrupts will not be
used, those interrupt vector locations can be used for program or data storage.
Interrupt
Starting
Address
VBA:$00
VBA:$02
VBA:$04
VBA:$06
VBA:$08
VBA:$0A
VBA:$0C
VBA:$0E
VBA:$10
VBA:$12
VBA:$14
VBA:$16
VBA:$18
VBA:$1A
VBA:$1C
VBA:$1E
VBA:$20
VBA:$22
VBA:$24
VBA:$26
VBA:$28
VBA:$2A
VBA:$2C
VBA:$2E
4-10

Table 4-2 Interrupt Sources

Interrupt
Priority
Level
Range
3 Hardware RESET
3 Stack Error
3 Illegal Instruction
3 Debug Request Interrupt
3 Trap
3 Non-Maskable Interrupt (NMI)
3 Reserved
3 Reserved
0Ð2 IRQA
0Ð2 IRQB
0Ð2 IRQC
0Ð2 IRQD
0Ð2 DMA Channel 0
0Ð2 DMA Channel 1
0Ð2 DMA Channel 2
0Ð2 DMA Channel 3
0Ð2 DMA Channel 4
0Ð2 DMA Channel 5
0Ð2 TIMER 0 Compare
0Ð2 TIMER 0 Overflow
0Ð2 TIMER 1 Compare
0Ð2 TIMER 1 Overflow
0Ð2 TIMER 2 Compare
0Ð2 TIMER 2 Overflow
DSP56309UM/D
Interrupt Source
MOTOROLA