Configuring Interrupts
Table 4-5. Interrupt Sources (Continued)
Interrupt
Starting Address
VBA:$40
VBA:$42
VBA:$44
VBA:$46
VBA:$48
VBA:$4A
VBA:$4C
VBA:$4E
VBA:$50
VBA:$52
VBA:$54
VBA:$56
VBA:$58
VBA:$5A
VBA:$5C
VBA:$5E
VBA:$60
VBA:$62
VBA:$64
VBA:$66
VBA:$68
VBA:$6A
VBA:$6C
:
VBA:$FE
Interrupt
Priority Level
Range
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
0–2
:
0–2
Interrupt Source
ESSI1 receive data
ESSI1 receive data with exception status
ESSI1 receive last slot
ESSI1 transmit data
ESSI1 transmit data with exception status
ESSI1 transmit last slot
Reserved
Reserved
SCI receive data
SCI receive data with exception status
SCI transmit data
SCI idle line
SCI timer
Reserved
Reserved
Reserved
Host receive data full
Host transmit data empty
Host command (default)
Reserved
EFCOP Data Input Buffer Empty
EFCOP Data Output Buffer Full
Reserved
:
Reserved
4.4.3
Processing Interrupt Source Priorities Within an IPL
If more than one interrupt request is pending when an instruction executes, the interrupt source
with the highest IPL is serviced first. When several interrupt requests with the same IPL are
pending, another fixed-priority structure within that IPL determines which interrupt source is
serviced first. Table 4-6 shows this fixed-priority list of interrupt sources within an IPL, from
DSP56311 User’s Manual, Rev. 2
Freescale Semiconductor
4-17
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