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AM79C940JC/W Datasheet(PDF) 3 Page - Advanced Micro Devices

Part # AM79C940JC/W
Description  Media Access Controller for Ethernet (MACE??
PDF  144 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM79C940JC/W Datasheet(HTML) 3 Page - Advanced Micro Devices

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Am79C940
3
BLOCK DIAGRAM
C16235D-1
EADI Port
XTAL2
EADI
Port
Control
AUI
Port
10BASE-T
MAU
DAI
Port
GPSI
Port
DXCVR
CLSN
SRDCLK
SRD
SF/BD
EAM/R
DO
±
DI
±
CI
±
TXD
±
TXP
±
RXD
RXPOL
TXDAT
±
TXEN
RXDAT
RXCRS
STDCLK
TXDAT+
TXEN
SRDCLK
RXDAT
RXCRS
CLSN
AUI
10BASE-T
DAI Port
GPSI
R/W
DBUS 15–0
ADD 4–0
Bus
Interface
Unit
TC
EDSEL
SCLK
INTR
BE 1–0
TDTREQ
TCK
RDTREQ
EOF
DTV
CS
FDS
SLEEP
RESET
RCV FIFO
XMT FIFO
JTAG
PORT CNTRL
FIFO
Control
Command
& Status
Registers
802.3
MAC
Core
TDI
TMS
TDO
XTAL1
Notes:
1. Only one of the network ports AUI, 10BASE-T, DAI port or GPSI can be active at any time. Some shared signals are
active regardless of which network port is active, and some are reconfigured.
2. The EADI port is active at all times.
LNKST



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