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COM20020-5IP Ver la hoja de datos (PDF) - SMSC -> Microchip

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componentes Descripción
Lista de partido
COM20020-5IP Datasheet PDF : 58 Pages
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XTAL1
XTAL2
AD0-AD7
ALE
A15
RESET
nRD
nWR
nINT1
8051
COM20020-5
AD0-AD2, D3-D7
A2/BALE
nCS
nRESET IN
nRD/nDS
nWR/DIR
nINTR
AO/nMUX
RXIN
nTXEN
nPULSE1
nPULSE2
GND
75ALS176B
or Equiv.
Differential Driver
Configuration
XTAL1 XTAL2
* Media Interface
may be replaced
with Figure A, B or C.
47 pF
40 MHz
47 pF
1K
FIGURE 2 - MULTIPLEXED, 8051-LIKE BUS INTERFACE WITH RS-485 INTERFACE
RXIN
TXEN
nPULSE1
nPULSE2
GND
+5V
100 Ohm
BACKPLANE CONFIGURATION
FIGURE A
RXIN
+5V
2
6 Receiver
HFD3212-002
7
nPULSE1
+5V
Transmitter
3 HFE4211-014
2
6
7
2 Fiber Interface
(ST Connectors)
NOTE: COM20020-5 must be in Backplane Mode
FIGURE B
13

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