SMC91C100 Datasheet, PDF (58/83 Pages) List of Unclassifed Manufacturers – FEAST Fast Ethernet Controller

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 11 - INTERRUPT GENERATION FOR TRANSMIT, RECEIVE, MMU
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