COM20022V-HT Просмотр технического описания (PDF) - SMSC -> Microchip

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производитель

COM20022V-HT

10Mbps ARCNET controller with 2Kx8 on-board RAM

SMSC -> Microchip 

XTAL1

XTAL2

D0-D7

A0

A1

A2

A7

nRES

nIOS

R/nW

nIRQ1

6801

COM20022

D0-D7

A0/nMUX

A1

A2/BALE

nCS

nRESET

nRD/nDS

nWR/nDIR

nINTR

XTAL1

RXIN

TXEN

nPULSE1

nPULSE2

GND

75176B or

Equiv.

XTAL2

Differential Driver

Configuration

* Media Interface

may be replaced

with Figure A, B or C.

27 pF

20MHz

XTAL

27 pF

RXIN

+5V

HYC9068 or

HYC9088

10 +

uF

0.47

uF

RXIN

6

12

nTXEN N/C

11

nPULSE1

nPULSE1

nPULSE2

nPULSE2

GND

17, 19,

4, 13, 14

3

0.47

uF

-5V

+ 10

uF

FIGURE C

5.6K

1/2W

5.6K

1/2W

0.01 uF

1KV

Traditional Hybrid

Configuration

*Valid for 2.5 Mbps only.

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

16

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