Am79C983AKCW datasheet, PDF - EEWORLD Datasheet

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Am79C983AKCW: DescriptionIntegrated Multiport Repeater 2 (IMR2⑩); CategoryWireless rf/communication Telecom circuit; File Size337KB，60 Pages; ManufacturerAMD; Websitehttp://www.amd.com

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Am79C983AKCW Overview

Integrated Multiport Repeater 2 (IMR2⑩)

Am79C983AKCW Parametric

Parameter Name	Attribute value
Maker	AMD
Parts packaging code	QFP
package instruction	BQFP,
Contacts	132
Reach Compliance Code	unknown
JESD-30 code	S-PQFP-G132
length	24.13 mm
Number of functions	1
Number of terminals	132
Maximum operating temperature	70 °C
Minimum operating temperature
Package body material	PLASTIC/EPOXY
encapsulated code	BQFP
Package shape	SQUARE
Package form	FLATPACK, BUMPER
Certification status	Not Qualified
Maximum seat height	4.57 mm
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Telecom integrated circuit types	ETHERNET TRANSCEIVER
Temperature level	COMMERCIAL
Terminal form	GULL WING
Terminal pitch	0.635 mm
Terminal location	QUAD
width	24.13 mm
Base Number Matches	1

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PRELIMINARY

Am79C983A

Integrated Multiport Repeater 2 (IMR2™)

DISTINCTIVE CHARACTERISTICS

Repeater functionality compliant with IEEE

802.3 Repeater Unit speciﬁcations

Hardware implementation of Management

Information Base (MIB) with all of the counters,

attributes, actions, and notiﬁcations speciﬁed

by IEEE 802.3 Section 19

(Layer Management)

Twelve pseudo AUI (PAUI™) ports to support

multiple media types via direct connection to

external transceivers

One IEEE-compliant AUI port

One reversible AUI (RAUI™) port that can be

programmed as a second AUI port or used to

connect directly to a media access controller

(MAC)

Direct interface with the AMD Am79C988A

QuIET™ (Quad Integrated Ethernet Transceiver)

to support 10BASE-T repeater designs

Port switching support to allow individual ports

to be switched between multiple Ethernet

backplanes under software control

Remote Monitoring (RMON) Register Bank to

provide direct support for etherStatsEntry and

etherStatsHistory object groups of the RMON

MIB (IETF RFC1757)

Packet Report Port to provide packet

information for deriving objects in the Host,

HostTopN, and Matrix groups of the RMON MIB

(IETF RFC1578)

Two user-selectable expansion bus modes:

IMR/IMR+ compatible mode and asynchronous

mode

Simple 8-bit microprocessor interface

Full LED support

132-pin PQFP CMOS device with a single 5-V

supply

GENERAL DESCRIPTION

The Am79C983A Integrated Multiport Repeater 2

(IMR2) chip is a VLSI integrated circuit that provides a

system-level solution to designing intelligent (man-

aged) multiport repeaters. When the IMR2 device is

combined with the Quad Integrated Ethernet Trans-

ceiver (QuIET) device, it provides a cost-effective

solution to designing 10BASE-T managed repeaters.

The IMR2 device integrates the repeater functions

speciﬁed by Section 9 (Repeater

Unit)

and Section19

(Layer

Management for 10 Mb/s Baseband Repeaters)

of the IEEE 802.3 standard.

The Am79C983A IMR2 device provides 1 standard

Attachment Unit Interface (AUI) port, 12 Pseudo

Attachment Unit Interface (PAUI) por ts, and 1

Reversible AUI (RAUI) port for direct connection to

a media access controller (MAC). The pseudo AUI

ports can be connected to external transceivers to

support multiple media types, including 10BASE2,

10BASE-T, and 10BASE-FL/FOIRL. The pseudo

AUI ports can be turned off individually (without ex-

ternal circuitry) to allow the switching of transceiver

ports between IMR2 devices. This capability allows

multiple IMR2 devices to be connected to a single

set of transceivers, thus allowing straightforward

implementations of port switching applications.

The IMR2 device also provides a Hardware Imple-

mented Management Information Base (HIMIB™),

which is a super set of the functions provided by the

Am79C987 HIMIB device. All of the necessar y

counters, attributes, actions, and notiﬁcations speci-

ﬁed by Section 19 of the IEEE 802.3 standard are

included in the IMR2 device. To facilitate the design

of managed repeaters, the IMR2 device implements

a simple 8-bit microprocessor interface.

Support for an RMON MIB, as speciﬁed by the Internet

Engineering Task Force (IETF) RFC 1757, is provided.

Direct support is from an RMON Register Bank. Addi-

tional support is provided by the Packet Report Port,

which supplies information that can be used in conjunc-

tion with a microprocessor to derive various RMON

MIB attributes. With systems using multiple IMR2 de-

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#

19879

Rev:

Amendment/0

Issue Date:

April 1997

Am79C983AKCW Related Products

	Am79C983AKCW	AM79C983A	Am79C983AKC
Description	Integrated Multiport Repeater 2 (IMR2⑩)	Integrated Multiport Repeater 2 (IMR2⑩)	Integrated Multiport Repeater 2 (IMR2⑩)
Maker	AMD	-	AMD
Parts packaging code	QFP	-	QFP
package instruction	BQFP,	-	PLASTIC, QFP-132
Contacts	132	-	132
Reach Compliance Code	unknown	-	unknown
JESD-30 code	S-PQFP-G132	-	S-PQFP-G132
length	24.13 mm	-	24.13 mm
Number of functions	1	-	1
Number of terminals	132	-	132
Maximum operating temperature	70 °C	-	70 °C
Package body material	PLASTIC/EPOXY	-	PLASTIC/EPOXY
encapsulated code	BQFP	-	BQFP
Package shape	SQUARE	-	SQUARE
Package form	FLATPACK, BUMPER	-	FLATPACK, BUMPER
Certification status	Not Qualified	-	Not Qualified
Maximum seat height	4.57 mm	-	4.57 mm
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 form	GULL WING	-	GULL WING
Terminal pitch	0.635 mm	-	0.635 mm
Terminal location	QUAD	-	QUAD
width	24.13 mm	-	24.13 mm
Base Number Matches	1	-	1

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