CS8900A-CQZ View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CS8900A-CQZ

Crystal LAN™ Ethernet Controller

Cirrus Logic 

CS8900A

Crystal LAN™ Ethernet Controller

An enabled interrupt occurs.

T he 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 .

E X IT .

Yes

In te r ru p ts

re -e n a b le d .

(In te rru p ts

w ill be

d is a b le d

for at least

1.6 us.)

ISQ = 0000h?

No

W hich

Event

report

type?

RxEvent

Process applicable

RxEvent bits: Extradata,

Runt, CRCerror, RxO K.

TxEvent

Process applicable

TxEvent bits: 16coll, Jabber,

O ut-of-window, TxO K.

BufEvent

Process applicable BufEvent

bits: RxDest, Rx128, RxM iss,

TxUnderrun, Rdy4Tx,

RxD MAFrame, SW int.

RxM ISS

Process RxMISS counter.

TxCOL

Process TxCO L counter.

None of the above

Figure 19. Interrupt Status Queue

Service

De fault

CIRRUS LOGIC PRODUCT DATASHEET

DS271F4

79

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