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I/O INTERFACING
FROM
OTHER
PERIPHERALS
Vee
CLOCK
GENERATOR
10K!)
CLK2 RESET
RESET
CLK2
I
ADS#
ADS~
CLK2
82380
RESET
CPURST
OPTIONAL
READY#
I
WAITSTATE
READYO#
LOGIC
i386'"DX
CPU
READY#
HOLD
HOLD
HLDA
HLDA
INT
INT
D/C#
D/C#
W/R#
W/R#
M/IO#
M/IO#
BEO-3#,
-.A-
t..
BE0-3#,
A2-A31
K
)
A2-A31
~
I I I
:.
Do-D31
K
)
00-D31
~
l
UU
r
TO
BUS·
TO
BUS
CONTROLLER
BUFFERS
NOTE: INTERFACE WITHOUT CACHE
231732i8-13
Figure 8·13. Intel386™
OX
Microprocessor/82380 Interface
LAN. Such a station usually includes a host CPU, shared memory, a Serial Interface
Unit, a transceiver, and a LAN link (see Figure 8-14). The
82586
performs all functions
associated with data transfer between the shared memory and the LAN link, including:
• Framing
• Link management
• Address filtering
• Error detection
• Data encoding
• Network management
8-22