IA21140AF
Preliminary Data Sheet
PCI FAST ETHERNET LAN CONTROLLER
System Block Diagram
This block below illustrates the major functions of the IA21140AF.
Boot ROM/
Board
Serial
ROM
External
Register
Control
Signals
PCI
Boot
ROM
Port
Serial
ROM
Port
General-
Purpose
Register
PCI
Interface
32
32
32
32
8
DMA
32
Rx
FIFO
Tx
FIFO
16
RxM
16
TxM
4
4
Physical
Coding
Sublayer
4
4
1
1
Scrambler/
Descrambler
Serial
Interface
MII/SYM
Interface
10 Mb/s
10 Mb/s or 100 Mb/s
Copyright 2001
ENG210010110-00
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