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IXP400 Software
Access-Layer Components: Synchronous Serial Port (IxSspAcc) API
Programmer’s Guide IXP400 Software Version 2.0 April 2005
Document Number: 252539, Revision: 007 279
Figure 93. Interrupt Scenario
B4389-01
Client SspAcc
ixSspAccInit: return
hardware
ixSspAccInit
interrupt: RxFIFOHitOrAboveThreshold
ixSspAccFIFODataReceive
Rx handler
ixSspAccFIFODataReceive: return
Data processing
RxFIFOIntrHandler
RxFIFOIntrHandler: return
interrupt: clear RxFIFOHitOrAboveThreshold
interrupt: TxFIFOHitOrBelowThreshold
TxFIFOIntrHandler
ixSspAccFIFODataSubmit
ixSspAccFIFODataSubmit: return
TxFIFOIntrHandler: return
interrupt: clear TxFIFOHitOrBelowThreshold
Tx handler
init
Rx FIFO Overrun handler
interrupt: RxFIFOOverrun
ixSspAccFIFODataReceive
ixSspAccFIFODataReceive: return
Data processing/
loss data recovery
RxFIFOOverrunHandler
RxFIFOOverrunHandler: return
interrupt: clear RxFIFOOverrun