SMSC LAN91C111 - Manual (Page 94)

10/100 Non-PCI Ethernet Single Chip MAC + PHY
Datasheet
Revision 1.91 (08-18-08) 94 SMSC LAN91C111 REV C
DATASHEET
Figure 10.6 Interrupt Generation for Transmit, Receive, MMU
TX
FIFO
TX COMPLETION
FIFO
RX
FIFO
CSMA/CD
LOGICAL
ADDRESS
PACKET #
MMU
PHYSICAL ADDRESS
RAM
CPU ADDRESS CSMA ADDRESS
RX PACKET
NUMBER
RX FIFO
PACKET NUMBER
PACKET NUMBER
REGISTER
PACK # OUT M.S. BIT ONLY
'EMPTY'
'NOT EMPTY'
TX DONE
PACKET NUMBER
'NOT EMPTY'
INTERRUPT
STATUS REGISTER
RCV
INT
TX EMPTY
INT
TX
INT
ALLOC
INT
TWO
OPTIONS