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TC3097-8

Lite End Multiport Repeater Interface Controller

Unspecified 

TC3097-8

Preliminary Data Sheet

Lite End Multiport Repeater Interface Controller

Features

Functionally conforms to Section 9 in the IEEE

802.3 specification.

9 network connection (ports) per chip including:

– 1 AUI PORT with fully compatible and drive

capability (50m AUI cable).

– 8 TP PORT with fully compatible and drive

capability (100m TP cable).

Cascadable for large multiple LEMRIC hub

applications.

On-chip Elasticity buffer, Manchester encoder

and decoder.

Separate partition state machine for each port.

Embeded LED output driver for each port

partition status, each port link/receive status

(TP port), global jam status, and global jabber

status. No external glue logic is required.

Embedded predistortion resistors for every TP

port.

Build in power reset circuit, no extra glue logic

required.

Crystal/Oscillater optional applicable.

Manchester code violation detection and reporting.

Support MAU Jabber Lockup Protection function.

Support Auto Partition/Reconnection function

to isolate a faulty segment's collision activity.

Fully integrated Link Test logic with

enable/disable option, conforming to the

10BASE-T standard.

Fully integrated polarity detect/correct logic

with enable/disable option for per TP port.

Low power consumption; fully load < 900 mW.

CMOS device feature high integration with a

single + 5V supply.

100-pin QFP package.

General Description

The TC3097 Lite End Multiport Repeater Interface

Controller (LEMRIC) may be used to implement

an IEEE 802.3 multiport repeater unit. It fully

satisfies the IEEE 802.3 repeater specification

including the functions defined by the repeater,

segment partition and jabber lockup protection

state machines.

The LEMRIC has an on-chip phase-locked-loop

(PLL) for Manchester data decoding, a

Manchester encoder, and an Elasticity Buffer for

preamble regeneration. In addition, it provides

direct LED display driver pins for per port

LINK/RCV status, per port partition jabber status,

global jam and jabber lockup status indications.

Each LEMRIC can connect up to 9 cable

segments via its network interface ports. One port

is fully Attachment Unit Interface (AUI) compatible

and is able to connect to an external Medium

Attachment Unit (MAU) using the maximum length

of AUI cable. The other 8 ports have integrated

10BASE-T transceivers. In addition, large repeater

units may be constructed by cascading LEMRICs

together over the Inter-LEMRIC bus.

Confidential.

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Copyright © 2003, IC Plus Corp.

July 21. 2003

TC3097-8-DS-R24

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