COM20019I-HT Standard Microsystems (SMSC), COM20019I-HT Datasheet - Page 70
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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Chapter 12
12.1
In order to properly write software to work with the COM20019I 3V Rev B and C it is necessary to be able to identify the
different revisions of the part.
To identify the COM20019I 3V Revision follow the following procedure:
Rev. 11-07-08
* If the value read from Register-5 is 0x80 then the part is a COM20019I 3V Rev B
* If the value read from Register-5 is 0xC0 then the part is a COM20019I 3V Rev C
1.
2.
3.
4.
Write 0x00 to Register-5
Read Register-5
Write 0xC0 to Register-5
Read Register-5*
Software Identification of the COM20019I 3V Rev B and Rev C
The value read from Register-5 must be 0x00.
Appendix C
DATASHEET
Page 70
Cost Competitive ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
SMSC COM20019I 3.3V Rev.C
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