SMSC TMC2005-JT User Manual

SMSC TMC2005-JT 

 

Revision 1.1 (07-24-07) 

 

 

 

 

 

 

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ARCNET HUB Circuit for ARCNET Protocol 
(Data Rate From 156.25Kbps to 10Mbps) 

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Able to Connect Various Transceivers Directly 

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Device Includes TX/RX Timing Circuit for 5 Port 
Hub and Direction Control Circuit, Jitter Correct 
Circuit and Noise Cancel Circuit 

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Easy to Design 8 or 12 Port Hub 

 

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Can Connect with HYC9088 in Normal Mode 

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Can Connect with RS485 Transceiver, 
HYC5000/4000/2000, Opt Module and TTL 
Interface in Backplane Mode 

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Supports both Normal and Backplane Mode at 
the Same Time for Media Conversion 

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+ 5V Single Power

 

 
When configuring a network, the maximum number of nodes and the maximum cable length are limited by the electric 
capacity of the transceiver. In this case, the network is expanded by an equipment called a “HUB” or “repeater”.  It 
maybe necessary to have a converter between coax, T/P and the fiber cable. It is easy to design a HUB or a repeater 
because the TMC2005 has various features for expanding such network. 
 
It can connect with HYC9088, RS485 transceiver, HYC5000/4000/2000 and TTL interface for optical module. It can 
connect with three different transceivers at the same time and convert the media of each. (The data rate cannot be 
converted. It is necessary to operate all nodes in the same network at the same data rate). The Hubs can be 
expanded by connecting two or more TMC2005 chips. By setting one of 5 ports to open-drain output, the Hub can be 
expanded to either 12 or 16 ports. 

Order Number(s): 

TMC2005-JT for 64 pin, TQFP Lead-Free RoHS Compliant Package