COM20022I-HT datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > semiconductor> Other integrated circuit (IC)> COM20022I-HT

COM20022I-HT: DescriptionNetwork controller and processor IC arcnet contrllr; Categorysemiconductor Other integrated circuit (IC); File Size473KB，69 Pages; ManufacturerAll Sensors; Environmental Compliance

Download Datasheet Parametric Compare View All

COM20022I-HT Online Shopping

Suppliers	Part Number	Price	MOQ	In stock
	COM20022I-HT	-	-	View	Buy Now

COM20022I-HT Overview

Network controller and processor IC arcnet contrllr

COM20022I-HT Parametric

Parameter Name	Attribute value
Maker	All Sensors
Product Category	Network Controllers and Processor ICs
RoHS	yes
product	Controller Area Network (CAN)
Transceiver quantity	1
data rate	10 Mbps
Supply voltage (maximum)	5.5 V
Supply voltage (minimum)	4.5 V
Supply current (maximum)	65 mA
Maximum operating temperature	+ 85 C
Minimum operating temperature	- 40 C
Package/box	TQFP-48
Encapsulation	Reel
Installation style	SMD/SMT

Preview

Download Datasheet

View All

COM20020I 3.3V

Rev.E

5Mbps ARCNET (ANSI

878.1) Controller with

2K x 8 On-Chip RAM

Datasheet

Product Features

New Features:

- Data Rates up to 5 Mbps

- Programmable Reconfiguration Times

28 Pin PLCC and 48 Pin TQFP packages;

Lead-Free RoHS Compliant packages also

available

Ideal for Industrial/Factory/Building Automation

and Transportation Applications

Deterministic, (ANSI 878.1), Token Passing

ARCNET Protocol

Minimal Microcontroller and Media Interface

Logic Required

Flexible Interface For Use With All

Microcontrollers or Microprocessors

Automatically Detects Type of Microcontroller

Interface

2Kx8 On-Chip Dual Port RAM

Command Chaining for Packet Queuing

Sequential Access to Internal RAM

Software Programmable Node ID

Eight, 256 Byte Pages Allow Four Pages TX and

RX Plus Scratch-Pad Memory

Next ID Readable

Internal Clock Scaler and Clock Multiplier for

Adjusting Network Speed

Operating Temperature Range of -40 C to +85 C

3.3V power supply with 5V tolerant I/O

Self-Reconfiguration Protocol

Supports up to 255 Nodes

Supports Various Network Topologies (Star, Tree,

Bus...)

CMOS, Single +3.3V Supply

Duplicate Node ID Detection

Powerful Diagnostics

Receive All Packets Mode

Flexible Media Interface:

Traditional Hybrid Interface For Long Distances

at 2.5Mbps

RS485 Differential Driver Interface For Low

Cost, Low Power, High Reliability

ORDERING INFORMATION

Order Number(s):

COM20020I 3VLJP for 28 pin PLCC * package

COM20020I 3V-DZD for 28 pin PLCC * Lead-Free RoHS Compliant package

COM20020I 3V-HD for 48 pin TQFP package

COM20020I 3V-HT for 48 pin TQFP Lead-Free RoHS Compliant package

* TQFP package is recommended for new design

SMSC COM20020I 3.3V Rev.E

Revision 09-11-06

DATASHEET

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

80 Arkay Drive

Hauppauge, NY 11788

(631) 435-6000

FAX (631) 273-3123

Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete

information sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no

responsibility is assumed for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without

notice. Contact your local SMSC sales office to obtain the latest specifications before placing your product order. The provision of this information does

not convey to the purchaser of the described semiconductor devices any licenses under any patent rights or other intellectual property rights of SMSC or

others. All sales are expressly conditional on your agreement to the terms and conditions of the most recently dated version of SMSC's standard Terms

of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement"). The product may contain design defects or errors known as

anomalies which may cause the product's functions to deviate from published specifications. Anomaly sheets are available upon request. SMSC

products are not designed, intended, authorized or warranted for use in any life support or other application where product failure could cause or

contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further testing

and/or modification will be fully at the risk of the customer. Copies of this document or other SMSC literature, as well as the Terms of Sale Agreement,

may be obtained by visiting SMSC’s website at http://www.smsc.com. SMSC is a registered trademark of Standard Microsystems Corporation (“SMSC”).

Product names and company names are the trademarks of their respective holders.

SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES, INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES

OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND AGAINST INFRINGEMENT AND THE LIKE, AND ANY AND ALL

WARRANTIES ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE. IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT,

INCIDENTAL, INDIRECT, SPECIAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES; OR FOR LOST DATA, PROFITS, SAVINGS OR REVENUES

OF ANY KIND; REGARDLESS OF THE FORM OF ACTION, WHETHER BASED ON CONTRACT; TORT; NEGLIGENCE OF SMSC OR OTHERS;

STRICT LIABILITY; BREACH OF WARRANTY; OR OTHERWISE; WHETHER OR NOT ANY REMEDY OF BUYER IS HELD TO HAVE FAILED OF

ITS ESSENTIAL PURPOSE, AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

SMSC COM20020I 3.3V Rev.E

Page 2

Revision 09-11-06

DATASHEET

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

TABLE OF CONTENTS

CHAPTER 1

CHAPTER 2

CHAPTER 3

CHAPTER 4

4.1

4.2

4.2.1

4.3

4.4

4.5

4.6

GENERAL DESCRIPTION................................................................................................................5

PIN CONFIGURATIONS ...................................................................................................................6

DESCRIPTION OF PIN FUNCTIONS ...............................................................................................8

PROTOCOL DESCRIPTION...........................................................................................................11

ETWORK

ROTOCOL

...................................................................................................................................11

ATA

ATES

................................................................................................................................................11

Selecting Clock Frequencies Above 2.5 Mbps .................................................................................... 11

ETWORK

ECONFIGURATION

........................................................................................................................12

ROADCAST

ESSAGES

................................................................................................................................12

XTENDED

IMEOUT

UNCTION

......................................................................................................................12

INE

ROTOCOL

............................................................................................................................................13

SYSTEM DESCRIPTION ................................................................................................................15

CHAPTER 5

5.1

5.2

ICROCONTROLLER

NTERFACE

.....................................................................................................................15

RANSMISSION

EDIA

NTERFACE

..................................................................................................................19

FUNCTIONAL DESCRIPTION........................................................................................................24

CHAPTER 6

6.1

6.2

6.3

6.4

6.5

6.6

ICROSEQUENCER

........................................................................................................................................24

INTERNAL REGISTERS ............................................................................................................................25

NTERNAL

..............................................................................................................................................35

OMMAND

HAINING

.....................................................................................................................................40

NITIALIZATION

EQUENCE

..............................................................................................................................42

MPROVED

IAGNOSTICS

................................................................................................................................42

OPERATIONAL DESCRIPTION .....................................................................................................45

CHAPTER 7

7.1

7.2

AXIMUM

UARANTEED

ATINGS

* .................................................................................................................45

LECTRICAL

HARACTERISTICS

................................................................................................................45

TIMING DIAGRAMS .......................................................................................................................48

PACKAGE OUTLINES ...................................................................................................................63

APPENDIX A...................................................................................................................................65

APPENDIX B...................................................................................................................................68

APPENDIX C...................................................................................................................................69

CHAPTER 8

CHAPTER 9

CHAPTER 10

CHAPTER 11

CHAPTER 12

12.1

OFTWARE

DENTIFICATION OF THE

COM20020I 3V R

AND

E ............................................................69

SMSC COM20020I 3.3V Rev.E

Page 3

Revision 09-11-06

DATASHEET

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

LIST OF FIGURES

Figure 1 - COM20020I 3V Operation ...........................................................................................................................10

Figure 2 - Multiplexed, 8051-Like Bus Interface With RS-485 Interface.......................................................................16

Figure 3 - Non-Multiplexed, 6801-Like Bus Interface With RS-485 Interface ...............................................................17

Figure 4 - High Speed Cpu Bus Timing - Intel CPU Mode ...........................................................................................18

Figure 5 - COM20020I 3V Network Using RS-485 Differential Transceivers..................................................................20

Figure 6 - Dipulse Waveform For Data Of 1-1-0...........................................................................................................20

Figure 7 - Internal Block Diagram.................................................................................................................................22

Figure 8 – Sequential Access Operation......................................................................................................................35

Figure 9 – Ram Buffer Packet Configuration................................................................................................................38

Figure 10 - Command Chaining Status Register Queue................................................................................................40

Figure 11 - Multiplexed Bus, 68xx-Like Control Signals; Read Cycle...........................................................................48

Figure 12 - Multiplexed Bus, 80xx-Like Control Signals; Read Cycle...........................................................................49

Figure 13 - Multiplexed Bus, 68xx-Like Control Signals; Write Cycle...........................................................................50

Figure 14 - Multiplexed Bus, 80xx-Like Control Signals; Write Cycle...........................................................................51

Figure 15 - Non-Multiplexed Bus, 80xx-Like Control Signals; Read Cycle...................................................................52

Figure 16 - Non-Multiplexed Bus, 80xx-Like Control Signals; Read Cycle...................................................................53

Figure 17 - Non-Multiplexed Bus, 68xx-Like Control Signals; Read Cycle...................................................................54

Figure 18 - Non-Multiplexed Bus, 68xx-Like Control Signals; Read Cycle...................................................................55

Figure 19 - Non-Multiplexed Bus, 80xx-Like Control Signals; Write Cycle ...................................................................56

Figure 20 - Non-Multiplexed Bus, 80xx-Like Control Signals; Write Cycle ...................................................................57

Figure 21 - Non-Multiplexed Bus, 68xx-Like Control Signals; Write Cycle ...................................................................58

Figure 22 - Non-Multiplexed Bus, 68xx-Like Control Signals; Write Cycle ...................................................................59

Figure 23 – Normal Mode Transmit Or Receive Timing ...............................................................................................60

Figure 24 – Backplane Mode Transmit or Receive Timing...........................................................................................61

Figure 25 – TTL Input Timing On XTAL1 Pin ...............................................................................................................62

Figure 26 – Reset And Interrupt Timing .......................................................................................................................62

Figure 27 - 28 Pin PLCC Package Dimensions............................................................................................................63

Figure 28 - 48 Pin TQFP Package Outline...................................................................................................................64

Figure 29 - Effect Of The EF Bit On The TA/RI Bit.......................................................................................................66

Figure 30 - Example Of Interface Circuit Diagram To ISA Bus ....................................................................................68

LIST OF TABLES

Table 1 - Typical Media ................................................................................................................................................23

Table 2 - Read Register Summary...............................................................................................................................24

Table 3 - Write Register Summary ...............................................................................................................................25

Table 4 - STATUS REGISTER .....................................................................................................................................28

Table 5 - DIAGNOSTIC STATUS REGISTER ..............................................................................................................29

Table 6 - COMMAND REGISTER ................................................................................................................................30

Table 7 - Address Pointer High Register .......................................................................................................................30

Table 8 - Address Pointer Low Register........................................................................................................................31

Table 9 - SUB ADDRESS REGISTER .......................................................................................................................31

Table 10 - Configuration Register ................................................................................................................................31

Table 11 - SETUP 1 REGISTER ..................................................................................................................................33

Table 12 - SETUP 2 REGISTER ..................................................................................................................................34

SMSC COM20020I 3.3V Rev.E

Page 4

Revision 09-11-06

DATASHEET

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

Chapter 1

General Description

SMSC's COM20020I 3V is a member of the family of Embedded ARCNET Controllers from Standard Microsystems

Corporation. The device is a general purpose communications controller for networking microcontrollers and intelligent

peripherals in industrial and embedded control environments using an ARCNET protocol engine. The flexible

microcontroller and media interfaces, eight-page message support, and extended temperature range of the COM20020I

3V make it the only true network controller optimized for use in industrial and embedded applications. Using an

ARCNET protocol engine is the ideal solution for embedded control applications because it provides a deterministic

token-passing protocol, a highly reliable and proven networking scheme, and a data rate of up to 5 Mbps when using the

COM20020I 3V.

A token-passing protocol provides predictable response times because each network event occurs within a

predetermined time interval, based upon the number of nodes on the network. The deterministic nature of ARCNET is

essential in real time applications. The integration of the 2Kx8 RAM buffer on-chip, the Command Chaining feature, the 5

Mbps maximum data rate, and the internal diagnostics make the COM20020I 3V the highest performance embedded

communications device available. With only one COM20020I 3V and one microcontroller, a complete communications

node may be implemented.

For more details on the ARCNET protocol engine and traditional dipulse signaling schemes, please refer to

the ARCNET Local Area Network Standard, available from Standard Microsystems Corporation or the

ARCNET Designer's Handbook, available from Datapoint Corporation.

For more detailed information on cabling options including RS485, transformer-coupled RS-485 and Fiber

Optic interfaces, please refer to the following technical note which is available from Standard Microsystems

Corporation: Technical Note 7-5 - Cabling Guidelines for the COM20020I 3V ULANC.

SMSC COM20020I 3.3V Rev.E

Page 5

Revision 09-11-06

DATASHEET

COM20022I-HT Related Products

	COM20022I-HT	COM20020I3V-HD	COM20022ITQFP	COM20020I-HD
Description	Network controller and processor IC arcnet contrllr	Network controller and processor IC arcnet contrllr	Network controller and processor IC arcnet contrllr	Network controller and processor IC arcnet contrllr
Maker	All Sensors	All Sensors	All Sensors	All Sensors
Product Category	Network Controllers and Processor ICs	Network Controllers and Processor ICs	Network Controllers and Processor ICs	Network Controllers and Processor ICs
RoHS	yes	no	no	no
product	Controller Area Network (CAN)	Controller Area Network (CAN)	Controller Area Network (CAN)	Controller Area Network (CAN)
Transceiver quantity	1	1	1	1
data rate	10 Mbps	5 Mbps	10 Mbps	5 Mbps
Supply voltage (maximum)	5.5 V	3.465 V	5.5 V	5.5 V
Supply voltage (minimum)	4.5 V	3.135 V	4.5 V	4.5 V
Supply current (maximum)	65 mA	35 mA (Typ)	65 mA	40 mA (Typ)
Maximum operating temperature	+ 85 C	+ 85 C	+ 85 C	+ 85 C
Minimum operating temperature	- 40 C	- 40 C	- 40 C	- 40 C
Package/box	TQFP-48	TQFP-48	TQFP-48	TQFP-48
Encapsulation	Reel	Reel	Reel	Reel
Installation style	SMD/SMT	SMD/SMT	SMD/SMT	SMD/SMT

Recommended Resources

What are the advantages of switching power adapters?

Temperature has a great impact on the natural aging process of UPS batteries

Automatic greeting receiving circuit

transistor low speed switch

Delayed release relay circuit diagram

555 frequency sweep ultrasonic insect repeller circuit

MS8211 Pen-Type Multimeter Disassembly: [i=s]This post was last edited by dcexpert on 2022-2-4 16:55[/i]I had nothing to do these few days, and I accidentally found the MS8211 multimeter at the bottom of the box. I disassembled it and share...; dcexpert Making friends through disassembly

[Analog Electronics Course Selection Test] + Online Analog Electronics Learning: I haven't participated in community activities for a long time. I've been a little relaxed these days, so I came here to recharge and learn.I chose the ADC I'm interested in.Then I checked the catalog...; 不足论 TI Technology Forum

DC brushless motor driver WS-2406 Urgent: I want to ask how to use the DC brushless motor driver WS-2406, which uses a DC+12V driver. There are two +5V interfaces on the driver, and I don't know how to use them. There are also HALL A, HALL B,...; snailsun Embedded System

f769First intimate contact: [i=s]This post was last edited by star_66666 on 2016-12-7 17:36[/i] I received a call from the courier this morning. It was from Shentong Express. I was very excited. The long-awaited 769 finally arri...; star_66666 stm32/stm8

I am a beginner in DSP and need some advice: Dear experts:I just started to learn DSP, and I don't understand it very well. Now I am learning digital signal processing, I would like to ask you to give me some advice, what are the good experience...; ych19870520 DSP and ARM Processors

2009 National Electronic Design Competition Instruments: [i=s]This post was last edited by paulhyde on 2014-9-15 09:13[/i] Discussion on Instruments and Meters in the 2009 National Electronic Design Competition: I don’t know what kind of questions will be t...; yangjg Electronics Design Contest

Shortcut: L0 L1 L2 L3 L4 L5 L6 L7 L8 L9 LA LB LC LD LE LF LG LH LI LJ LK LL LM LN LO LP LQ LR LS LT LU LV LW LX LY LZ M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF MG MH MI MJ MK ML MM MN MO MP MQ MR MS MT MU MV MW MX MY MZ N0 N1 N2 N3 N4 N5 N6 N7 N8 NA NB NC ND NE NF NG NH NI NJ NK NL NM NN NO NP NQ NR NS NT NU NV NX NZ O0 O1 O2 O3 OA OB OC OD OE OF OG OH OI OJ OK OL OM ON OP OQ OR OS OT OV OX OY OZ P0 P1 P2 P3 P4 P5 P6 P7 P8 P9 PA PB PC PD PE PF PG PH PI PJ PK PL PM PN PO PP PQ PR PS PT PU PV PW PX PY PZ Q1 Q2 Q3 Q4 Q5 Q6 Q8 Q9 QA QB QC QE QF QG QH QK QL QM QP QR QS QT QV QW QX QY R0 R1 R2 R3 R4 R5 R6 R7 R8 R9 RA RB RC RD RE RF RG RH RI RJ RK RL RM RN RO RP RQ RR RS RT RU RV RW RX RY RZ

Popular Components