COM20020I-HD Standard Microsystems (SMSC), COM20020I-HD Datasheet - Page 24
![no-image](/images/manufacturer_photos/0/6/632/standard_microsystems__smsc__sml.jpg)
COM20020I-HD
Manufacturer Part Number
COM20020I-HD
Description
Manufacturer
Standard Microsystems (SMSC)
Datasheet
1.COM20020I-HD.pdf
(72 pages)
Specifications of COM20020I-HD
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
Not Compliant
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Revision 12-05-06
RG-62 Belden #86262
RG-59/U Belden #89108
RG-11/U Belden #89108
IBM Type 1* Belden #89688
IBM Type 3* Telephone Twisted Pair
Belden #1155A
COMCODE 26 AWG Twisted Pair
Part #105-064-703
nWR/DIR
AD0-AD2,
nRD/nDS
*Non-plenum-rated cables of this type are also available.
CABLE TYPE
D3-D7
nRESET
nINTR
nCS
ARBITRATION
CIRCUITRY
CIRCUITRY
DECODING
ADDRESS
BUS
LOGIC
RESET
COMMAND
REGISTER
STATUS/
Figure 5.6 - Internal Block Diagram
RECONFIGURATION
IMPEDANCE
DATASHEET
Table 5.1 - Typical Media
NOMINAL
150Ω
100Ω
105Ω
93Ω
75Ω
75Ω
TIMER
SEQUENCER
REGISTERS
Page 24
WORKING
MICRO-
AND
2K x 8
RAM
5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
NODE ID
LOGIC
ATTENUATION PER 1000 FT.
OSCILLATOR
TX/RX
LOGIC
ADDITIONAL
REGISTERS
AT 5 MHZ
17.9dB
16.0dB
5.5dB
7.0dB
5.5dB
7.0dB
SMSC COM20020I Rev D
XTAL1
nPULSE1
nPULSE2
nTXEN
RXIN
XTAL2
Datasheet
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