COM20019I-DZD SMSC, COM20019I-DZD Datasheet - Page 16

• Manufacturer Part Number: COM20019I-DZD
• Description: IC CTRLR ARCNET 2KX8 RAM 28-PLCC
• Manufacturer: SMSC
• Series: ARCNETr

Specifications of COM20019I-DZD

• Controller Type: ARCNET Controller
• Interface: Differential
• Voltage - Supply: 4.5 V ~ 5.5 V
• Current - Supply: 20mA
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 28-PLCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 638-1000-5

Rev. 09-25-07
nPULSE1
nPULSE2
TXEN
RXIN
GND
Figure 5.1 - MULTIPLEXED, 8051-LIKE BUS INTERFACE WITH RS-485 INTERFACE
8051
BACKPLANE CONFIGURATION
AD0-AD7
RESET
XTAL1
XTAL2
nINT1
ALE
A15
FIGURE A
nWR
nRD
DATASHEET
A0/nMUX
27 pF
AD0-AD2, D3-D7
A2/BALE
nRESET
nRD/nDS
nWR/DIR
nCS
nINTR
+5V
100 Ohm
Page 16
Cost Competitive ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
XTAL1
COM20019I
20 MHz
XTAL
nPULSE1
XTAL2
NOTE: COM20019 must be in backplane mode
RXIN
nPULSE1
nPULSE2
nTXEN
RXIN
GND
27 pF
FIGURE B
Differential Driver
Configuration
*
Media Interface
with Figure A or B.
may be replaced
+5V
+5V
75176B or
Equiv.
2
6
7
3
2
6
7
2 Fiber Interface
(ST Connectors)
HFD3212-002
HFE4211-014
Transmitter
Receiver
SMSC COM20019I