COM20020-5P Просмотр технического описания (PDF) - SMSC -> Microchip

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Компоненты Описание

производитель

COM20020-5P

ULANC Universal Local Area Network Controller with 2K x 8 On-Board RAM

SMSC -> Microchip 

XTAL1

XTAL2

D0-D7

A0

A1

A2

A7

nRES

nIOS

R/nW

nIRQ1

6801

COM20020-5

D0-D7

A0/nMUX

A1

A2/BALE

nCS

nRESET IN

nRD/nDS

nWR/DIR

nINTR

XTAL1

RXIN

TXEN

nPULSE1

nPULSE2

GND

75ALS176B

or Equiv.

XTAL2

Differential Driver

Configuration

* Media Interface

may be replaced

with Figure A, B or C.

47 pF

40 MHz

1K

47 pF

FIGURE 3 - NON-MULTIPLEXED, 6801-LIKE BUS INTERFACE WITH RS-485

INTERFACE

14

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