CS8900 데이터 시트보기 (PDF) - Cirrus Logic

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CS8900

Highly-Integrated ISA Ethernet Controller

Cirrus Logic 

CS8900

An enabled interrupt occurs.

The selected interrupt

request pin is driven high

(active) if not already high.

The host reads the ISQ.

The selected interrupt

request pin is driven low.

EXIT.

Yes

Interrupts

re-enabled.

(Interrupts

will be

disabled

for at least

1.6 us.)

ISQ = 0000h?

No

Which

Event

report

type?

RxEvent

Process applicable

RxEvent bits: Extradata,

Runt, CRCerror, RxOK.

TxEvent

Process applicable

TxEvent bits: 16coll, Jabber,

Out-of-window, TxOK.

BufEvent

Process applicable BufEvent

bits: RxDest, Rx128, RxMiss,

TxUnderrun, Rdy4Tx,

RxDMAFrame, SWint.

RxMISS

Process RxMISS counter.

TxCOL

Process TxCOL counter.

None of the above

Figure 5.1. Interrupt Status Queue

Service

Default

78

DS150PP2

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