91C100FDREVB Datasheet, PDF (40/68 Pages) SMSC Corporation – FEAST FAST ETHERNET CONTROLLER WITH FULL DUPLEX CAPABILITY

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 Pass?
Yes
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
SMSC DS – LAN91C100FD REV. B
Page 40
Rev. 05/31/2000