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Rabbit 6000 User’s Manual
digi.com
86
There is a priority among interrupts if multiple requests are pending, as shown in Table 6-3. Interrupts
marked as “cleared automatically” have their requests cleared when the interrupt is first handled.
Table 6-3. Interrupt Priorities
Priority
Interrupt Source
Action Required to Clear the Interrupt
Highest Breakpoint
Read the status from BDCR.
System Mode Violation
Cleared automatically by interrupt acknowledge cycle.
Stack Limit Violation
Cleared automatically by interrupt acknowledge cycle.
Write Protection Violation
Cleared automatically by interrupt acknowledge cycle.
Secondary Watchdog
Restart secondary watchdog by writing to WDTCR.
External Interrupt 7–0
Cleared automatically by interrupt acknowledge cycle.
Periodic Interrupt (2 kHz)
Read the status from GCSR.
Quadrature Decoder
Read the status from QDCSR.
Timer B
Read the status from TBCSR.
Timer A
Read the status from TACSR.
Input Capture
Read the status from ICCSR.
PWM
Write any PWM register.
Timer C
Read the status from TCCSR.
Slave Port
Rd: Read from SPD0R, SPD1R or SPD2R.
Wr: Write to SPD0R, SPD1R, SPD2R or dummy write to SPSR.
DMA 15–0
Cleared automatically by interrupt acknowledge cycle.
Network Port B
Read interrupt status from NBCSR.
Network Port C
Read interrupt status from NCCSR.
Network Port D
Remove the interrupting condition.
Flexible Interface Module A
Write a 1 to bit 7 of FAIIR, wait for FIMA to clear the interrupt
code in FAOIR, and then clear bit 7 of FAIIR.
Flexible Interface Module B
Write a 1 to bit 7 of FBIIR, wait for FIMB to clear the interrupt
code in FBOIR, and then clear bit 7 of FBIIR.
A/D Converter
Read from ADCLR.
Serial Port E
Rx: Read from SEDR or SEAR.
Tx: Write to SEDR, SEAR, SELR or dummy write to SESR.
Serial Port F
Rx: Read from SFDR or SFAR.
Tx: Write to SFDR, SFAR, SFLR or dummy write to SFSR.
Serial Port G (I
2
C)
Remove the interrupting condition.
Serial Port A
Rx: Read from SADR or SAAR.
Tx: Write to SADR, SAAR, SALR or dummy write to SASR.
Serial Port B
Rx: Read from SBDR or SBAR.
Tx: Write to SBDR, SBAR, SBLR or dummy write to SBSR.
Serial Port C
Rx: Read from SCDR or SCAR.
Tx: Write to SCDR, SCAR, SCLR or dummy write to SCSR.
Lowest Serial Port D
Rx: Read from SDDR or SDAR.
Tx: Write to SDDR, SDAR, SDLR or dummy write to SDSR.
Summary of Contents for 6000
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Page 234: ...Rabbit 6000 User s Manual digi com 234 Figure 22 3 Sample Slow A D Converter Circuit...
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