LAN91C100FD_0601 Datasheet, PDF (52/78 Pages) SMSC Corporation – FEAST Fast Ethernet Controller with Full Duplex Capability

FEAST Fast Ethernet Controller with Full Duplex Capability
INTERRUPT
STATUS REGISTER
RCV
INT
PACKET NUMBER
REGISTER
TWO
OPTIONS
TX EMPTY
INT
TX
INT
ALLOC
INT
TX
FIFO
'EMPTY'
TX COMPLETION
FIFO
'NOT EMPTY'
TX DONE
PACKET NUMBER
CPU ADDRESS
'NOT EMPTY'
RX FIFO
PACKET NUMBER
RX
FIFO
RX PACKET
NUMBER
CSMA ADDRESS
M.S. BIT ONLY
LOGICAL PACKET #
ADDRESS
PACK # OUT
MMU
PHYSICAL ADDRESS
CSMA/CD
RAM
Figure 5.8 - Interrupt Generation for Transmit, Receive, MMU
Rev. 01-20-06
Page 52
DATASHEET
SMSC DS – LAN91C100FD Rev. D