COM20019I-HT Standard Microsystems (SMSC), COM20019I-HT Datasheet - Page 20
COM20019I-HT
Manufacturer Part Number
COM20019I-HT
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.COM20019I-HT.pdf
(70 pages)
Specifications of COM20019I-HT
Number Of Transceivers
1
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (min)
4.5V
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Lead Free Status / RoHS Status
Compliant
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Rev. 11-07-08
For 28-Pin PLCC package (BUSTMG is tied to 1 internally)
For 48-Pin TQFP package
Write operations are enabled; BUSTMG = 1, the High Speed CPU Read and Write operations are disabled
if the RBUSTMG bit is 0. If BUSTMG = 1 and RBUSTMG = 1, High Speed CPU Read operations are
enabled (see definition of RBUSTMG bit below).
In the MOTOROLA CPU mode (DIR, nDS mode), the same modifications apply.
BUSTMG PIN
0
1
1
RBUSTMG BIT
0
1
RBUSTMG BIT
X
0
1
Normal Speed CPU Read and Write
High Speed CPU Read and Normal Speed CPU Write
DATASHEET
High Speed CPU Read and Write
Normal Speed CPU Read and Write
High Speed CPU Read and Normal Speed CPU Write
Page 20
Cost Competitive ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
BUS TIMING MODE
BUS TIMING MODE
SMSC COM20019I 3.3V Rev.C
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