AN2184 Freescale Semiconductor / Motorola, AN2184 Datasheet - Page 15

• Manufacturer Part Number: AN2184
• Description: MCF5272 Interrupt Service Routine for the Physical Layer Interface Controller
• Manufacturer: Freescale Semiconductor / Motorola

monitor channel is concerned, the same philosophy will be applied, and the received path takes higher
priority. The flow chart is shown in Figure 11.
6.2 Multi-Port Case
Once the PLIC has many GCI ports enabled, a generic aperiodic interrupt is required to handle all of the
possibilities. As previously done in the periodic interrupt, the PnICR will be read so it can save some MIPS
in case the port is not enabled. The flow chart is shown in Figure 12.
Figure 11. One-Port Processing Aperiodic Interrupt Service Routine Flow Diagram
No
No
No
Process End
Process Port
(GCR) Set?
(GCT) Set?
P LICR
(GM T)
P LI CR
(GM R)
P LICR
P LICR
Set?
Set?
Freescale Semiconductor, Inc.
Yes
Yes
Yes
For More Information On This Product,
Yes
MCF5272 Interrupt Service Routine
No
Go to: www.freescale.com
No
No
No
A SR(GMR)
A SR(GSR )
A SR(GCT)
ASR(GMT)
Set ?
Set ?
Set ?
Set
Yes
Yes
Yes
Yes
Aperiodic Interrupt Process Multi-Port Case
Read PLGCITS
Read PLGM TS
Read PLGMR
Read PLGCR
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