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COM20022ITQFP Datasheet(PDF) 78 Page - SMSC Corporation

Part # COM20022ITQFP
Description  10 MBPS ARCNET CONTROLLER WITH 2KX8 ON BOARD RAM
PDF  83 Pages
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Manufacturer  SMSC [SMSC Corporation]
Direct Link  http://www.smsc.com
Logo SMSC - SMSC Corporation

COM20022ITQFP Datasheet(HTML) 78 Page - SMSC Corporation

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10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Board RAM
Datasheet
Rev. 08-18-03
Page 78
SMSC COM20022I
DATASHEET
4.
“Write” means write signal and “Read” means read signal. “Write/Read” means write or read signal.
At INTEL MODE, write signal is nWR and read signal is nRD.
At MOTOROLA MODE, write signal is nDS when DIR is Low and the read signal is nDS when DIR is High.
5.
Conditions of CASE1W, CASE2W, CASE1R and CASE2R are shown below;
CASE1W : BUSTMG pin = High
CASE2W : BUSTMG pin = Low
CASE1R : BUSTMG pin = High and RBUSTMG bit = 0
CASE2R : BUSTMG pin = Low or RBUSTMG bit = 1



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