Am79C985KCW datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Wireless rf/communication> Telecom circuit> Am79C985KCW

Am79C985KCW: Descriptionenhanced Integrated Multiport Repeater Plus (eIMR+⑩); CategoryWireless rf/communication Telecom circuit; File Size243KB，48 Pages; ManufacturerAMD; Websitehttp://www.amd.com

Download Datasheet Parametric Compare View All

Am79C985KCW Overview

enhanced Integrated Multiport Repeater Plus (eIMR+⑩)

Am79C985KCW Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	AMD
Parts packaging code	QFP
package instruction	QFP, QFP84,.7X.9
Contacts	100
Reach Compliance Code	unknow
JESD-30 code	R-PQFP-G100
JESD-609 code	e0
length	20 mm
Humidity sensitivity level	3
Number of functions	1
Number of terminals	100
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	QFP
Encapsulate equivalent code	QFP84,.7X.9
Package shape	RECTANGULAR
Package form	FLATPACK
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
power supply	5 V
Certification status	Not Qualified
Maximum seat height	3.35 mm
Maximum slew rate	350 mA
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Telecom integrated circuit types	ETHERNET TRANSCEIVER
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	QUAD
Maximum time at peak reflow temperature	NOT SPECIFIED
width	14 mm

Preview

Download Datasheet

View All

PRELIMINARY

Am79C985

enhanced Integrated Multiport Repeater Plus (eIMR+™)

DISTINCTIVE CHARACTERISTICS

Repeater functions compliant with IEEE 802.3

Repeater Unit speciﬁcations

Direct interface with the Am79C987 Hardware

Implemented Management Information Base

(HIMIB™) device for building a basic managed

multiport repeater

Full software backwards compatibility with

existing hub designs using Integrated Multiport

Repeater Plus (IMR+™)/HIMIB devices

Network management and optional feature

accessibility through a dedicated serial

management port

Four integral 10BASE-T transceivers with on-

chip ﬁltering eliminating the need for external

ﬁlter modules on the 10BASE-T transmit-data

(TXD) and receive-data (RXD) lines

One Reversible Attachment Unit Interface

(RAUI™) port used either as a standard IEEE-

compliant AUI port for connection to a Medium

Attachment Unit (MAU) or a reversed port for

direct connection to a Media Access Controller

(MAC)

Low cost suitable for managed multiport

repeater designs

Number of repeater ports easily expandable

with support for up to seven eIMR+ devices

without the need for an external arbiter

All ports capable of being individually isolated

(partitioned) in response to excessive collision

conditions or fault conditions

Flexible LED support for individual port status

and network utilization LEDs

Programmable extended distance mode on RXD

lines allowing connection to cables longer than

100 meters

Link Test function and Link Test pulse

transmission capable of being disabled through

the management port allowing devices that do

not implement the Link Test function to work

with the eIMR+ device

Programmable automatic polarity detection and

correction option permitting automatic

recovery from wiring errors

Full amplitude and timing regeneration for

retransmitted waveforms

CMOS device with a single +5-V supply

GENERAL DESCRIPTION

The enhanced Integrated Multiport Repeater Plus

(eIMR+) device is a VLSI integrated circuit that pro-

vides a system-level solution to designing managed

multiport repeaters. The device integrates the repeater

functions speciﬁed in Section 9 of the IEEE 802.3

standard and Twisted Pair Transceiver functions com-

plying with the 10BASE-T standard.

The eIMR+ device provides four Twisted Pair (TP) ports

and one reversible AUI (RAUI) port for direct connec-

tion to a MAC. The total number of ports per repeater

unit can be increased by connecting multiple eIMR+

devices through their expansion ports, hence, minimiz-

ing the total cost per repeater port.

The eIMR+ device also provides a connection to the

Am79C987 HIMIB device. The HIMIB device monitors

all the necessary counters, attributes, actions, and

notiﬁcations speciﬁed by IEEE 802.3, Section 19

(Layer Management for 10 Megabit per second (Mbps)

Baseband Repeaters). When the eIMR+ and HIMIB

devices are used together as a chip set, they provide a

cost-effective solution to the problem of designing

10BASE-T basic managed multiport repeaters.

The device is fabricated in CMOS technology and

requires a single +5-V supply.

This document contains information on a product under development at Advanced Micro Devices. The information

is intended to help you evaluate this product. AMD reserves the right to change or discontinue work on this proposed

product without notice.

Publication#

20651

Rev:

Amendment/0

Issue Date:

January 1998

P R E L I M I N A R Y

TABLE OF CONTENTS

DISTINCTIVE CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

ORDERING INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Standard Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

RELATED PRODUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

CONNECTION DIAGRAMS (PL 084) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

CONNECTION DIAGRAMS (PQR100) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

LOGIC SYMBOL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

LOGIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

PIN DESIGNATIONS (PL084) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Listed by Pin Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

PIN DESIGNATIONS (PQR100) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Listed by Pin Number. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

PIN DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

AUI Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Twisted Pair Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Expansion Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Management Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

LED Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Miscellaneous Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

FUNCTIONAL DESCRIPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Basic Repeater Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Repeater Function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Signal Regeneration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Jabber Lockup Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Collision Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Fragment Extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Auto Partitioning/Reconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Detailed Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

AUI Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

TP Port Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Twisted Pair Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Connection to Alternate Media . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Twisted Pair Receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Link Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Polarity Reversal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Visual Status Monitoring (LED) Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Network Activity Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Expansion Bus Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Internal Arbitration Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

IMR+ Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Management Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

eIMR+ /HIMIB Interconnection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Management Port Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Command/Response Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Port Activity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Management Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

SET (Write Commands) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Get (Read Commands) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

SYSTEMS APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

eIMR+ to TP Port Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Twisted Pair Transmitters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Twisted Pair Receivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

MAC Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Am79C985

Am79C985KCW Related Products

	Am79C985KCW	Am79C985JC	AM79C985
Description	enhanced Integrated Multiport Repeater Plus (eIMR+⑩)	enhanced Integrated Multiport Repeater Plus (eIMR+⑩)	enhanced Integrated Multiport Repeater Plus (eIMR+⑩)
Is it Rohs certified?	incompatible	incompatible	-
Maker	AMD	AMD	-
Parts packaging code	QFP	LCC	-
package instruction	QFP, QFP84,.7X.9	QCCJ, LDCC84,1.2SQ	-
Contacts	100	84	-
Reach Compliance Code	unknow	unknown	-
JESD-30 code	R-PQFP-G100	S-PQCC-J84	-
JESD-609 code	e0	e0	-
length	20 mm	29.2862 mm	-
Number of functions	1	1	-
Number of terminals	100	84	-
Maximum operating temperature	70 °C	70 °C	-
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	-
encapsulated code	QFP	QCCJ	-
Encapsulate equivalent code	QFP84,.7X.9	LDCC84,1.2SQ	-
Package shape	RECTANGULAR	SQUARE	-
Package form	FLATPACK	CHIP CARRIER	-
Peak Reflow Temperature (Celsius)	NOT SPECIFIED	NOT SPECIFIED	-
power supply	5 V	5 V	-
Certification status	Not Qualified	Not Qualified	-
Maximum seat height	3.35 mm	4.57 mm	-
Maximum slew rate	350 mA	350 mA	-
Nominal supply voltage	5 V	5 V	-
surface mount	YES	YES	-
technology	CMOS	CMOS	-
Telecom integrated circuit types	ETHERNET TRANSCEIVER	ETHERNET TRANSCEIVER	-
Temperature level	COMMERCIAL	COMMERCIAL	-
Terminal surface	Tin/Lead (Sn/Pb)	Tin/Lead (Sn/Pb)	-
Terminal form	GULL WING	J BEND	-
Terminal pitch	0.65 mm	1.27 mm	-
Terminal location	QUAD	QUAD	-
Maximum time at peak reflow temperature	NOT SPECIFIED	NOT SPECIFIED	-
width	14 mm	29.2862 mm	-

Recommended Resources

Paper thickness detection circuit

Remote control coded infrared transmitter circuit

DC voltage doubler circuit

Control the DC motor starting circuit according to the time principle

Fluorescent dimming circuit (1)

Precision series regulated power supply

Experts please help me!!!!!!!!!!!!!!!!!!!!! 1: How to use a multimeter to detect if the graphics card memory is bad? ? ? ? ? ?...; yuheng0918 Test/Measurement

A little bit about the lens~~: The smaller the lens, the larger the angle, the closer you can see; the larger the lens, the smaller the angle, the farther you can see....; fish001 Industrial Control Electronics

[Transfer] High-speed PCB wiring practice guide --- the article is very well written: [b]A Practical Guide to High-Speed PCB Routing[/b] [p=15, null, left][color=rgb(0, 0, 0)][font=Arial, Helvetica, sans-serif][size=12px]Author: John Ardizzoni[/size][/font][/color][/p][hr][p=15, null, ...; dontium ADI Reference Circuit

pnmtoc.exe: Why does my pnmtoc.exe disappear after a flash when it opens?https://bbs.eeworld.com.cn/thread-220451-1-8.html...; 喜鹊王子 Microcontroller MCU

I suggest doing a PCB layout column, which is what many prospective novices desire!: I suggest to do a PCB layout column, which is what many newbies want! It is also an important part of improving the industry level. Everyone knows how important PCB layout is to the EMI of power suppl...; zbz0529 Power technology

Please advise, it seems that it is not possible to call functions starting with GUI in the emwin control?: I'd like to ask, it seems that calling functions starting with GUI in emwin controls is not possible? Is there any way to solve this problem? For example, GUI_DispStringAt((const char *) "25fgdg", 25,...; hpdell stm32/stm8

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