LAN91C100 Datasheet, PDF (57/101 Pages) SMSC Corporation – FEAST™ Fast Ethernet Controller

RX INTR
Write Ad. Ptr. Reg. & Read
Word 0 from RAM
Yes
Destination
No
Multicast?
Read Words 2, 3, 4 from RAM
for Address Filtering
No
Address Filtering ^Yes
Pass?
No
Status Word
Yes
OK?
Do Receive Lookahead
Get Copy Specs from Upper
Layer
No
Okay to
Yes
Copy?
Copy Data Per Upper Layer
Specs
Issue "Remove and Release"
Command
Return to ISR
FIGURE 7 – RX INTR
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