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COM20022I-3.3V 데이터 시트보기 (PDF) - SMSC -> Microchip
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COM20022I-3.3V
10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Chip RAM
SMSC -> Microchip
COM20022I-3.3V Datasheet PDF : 73 Pages
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10 Mbps ARCNET (ANSI 878.1) Controller with 2Kx8 On-Chip RAM
Datasheet
XTAL1
XTAL2
AD0-AD7
ALE
A15
RESET
nRD
nWR
nINT1
8051
COM20022
AD0-AD2, D3-D7
A2/BALE
nCS
nRESET
nRD/nDS
nWR/DIR
nINTR
RXIN
nTXEN
nPULSE1
nPULSE2
GND
75176B or
Equiv.
Differential Driver
Configuration
A0/nMUX
XTAL1
XTAL2
27 pF
20 MHz
XTAL
27 pF
*Media
Interface
may be replaced
with Figure A, B or C.
RXIN
TXEN
nPULSE1
nPULSE2
GND
+5V
100 Ohm
BACKPLANE CONFIGURATION
FIGURE A
3V.
RXIN
+5V
2
6 Receiver
HFD3212-002
7
nPULSE1
+5V
Transmitter
3
HFE4211-014
2
6
7
2 Fiber Interface
(ST Connectors)
NOTE: COM20022 must be in backplane mode
FIGURE B
Figure 5.1
- Multiplexed, 8051 - Like Bus Interface with RS-485 Interface
SMSC COM20022I 3.3V Rev.C
Page 17
DATASHEET
Revision 03-08-07
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