COM20020I3VLJP View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

Manufacturer

COM20020I3VLJP

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

SMSC -> Microchip 

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

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

nTXEN N/C

nPULSE1

nPULSE1

nPULSE2

GND

nPULSE2

17, 19,

4, 13, 14

12

11

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

SMSC COM20020I 3.3V Rev.E

Page 17

DATASHEET

Revision 09-11-06

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