91C94 Datasheet, PDF (70/120 Pages) SMSC Corporation – ISA/PCMCIA SINGLE CHIP ETHERNET CONTROLLER WITH RAM

RX INTR
Wr ite Ad. Pt r.R eg . & Read
Word 0 f rom RAM
Ye s
Des tination
No
Mult ica st?
R ea d Words 2 , 3, 4 from RAM
for Addr es s Filt ering
No
Addr es s Filtering ^{Ye s}
Pass?
No
S tat us Word
Ye s
OK?
Do R eceive Lookahe ad
Get Co py Specs from Upper
La yer
No
Ok ay to
Ye s
Co py?
Copy D at aPer Upper L ayer
Spec s
Iss ue "Remo ve and Relea se "
Co mm a nd
Return to ISR
FIGURE 13 – RX INTR
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