Intel IXP400 manual Document Number 252539, Revision

Intel® IXP400 Software

Access-Layer Components: Synchronous Serial Port (IxSspAcc) API

4.For an overrun:

a.Interrupt is triggered due to an overrun of the Rx FIFO.

b.Rx FIFO Overrun handler/callback is called.

c.Rx FIFO Overrun handler/callback extracts data from the Rx FIFO to prevent the overrun from triggering again.

d.(processes data extracted and perform necessary steps to recover data loss if possible)

e.Rx FIFO Overrun handler/callback returns.

f.Interrupt is cleared

April 2005	IXP400 Software Version 2.0	Programmer’s Guide
278	Document Number: 252539, Revision: 007