COM20019I-HD View Datasheet(PDF) - SMSC -> Microchip

Part Name

Description

MFG CO.

COM20019I-HD

Cost Competitive ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

SMSC -> Microchip 

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Low Cost ARCNET (ANSI 878.1) Controller with 2K x 8 On-Board RAM

A0/nMUX

A1

A2/BALE

ADDRESS

DECODING

CIRCUITRY

AD0-AD2,

D3-D7

2K x 8

RAM

ADDITIONAL

REGISTERS

nINTR

nRESET

STATUS/

COMMAND

REGISTER

RESET

LOGIC

MICRO-

SEQUENCER

AND

WORKING

REGISTERS

TX/RX

LOGIC

nRD/nDS

nWR/DIR

nCS

BUS

ARBITRATION

CIRCUITRY

RECONFIGURATION

TIMER

OSCILLATOR

NODE ID

LOGIC

nPULSE1

nPULSE2

nTXEN

RXIN

XTAL1

XTAL2

Figure 5.5 - INTERNAL BLOCK DIAGRAM

SMSC COM20019I

Page 21

DATASHEET

Rev. 04-15-05

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