Signal conversion between 100base-TX and 100Base-FX

Signal conversion between 100base-TX and 100Base-FX

Post by chan30 » Sun, 07 Mar 2004 01:30:50


I want to make a small optical Ad-Hoc network(100MHz). I have bought 4
ML6652 chips to do the coversion between the Ethernet Fiber and Copper
Media. Can anyone give me some suggestions about how to do it? Do I
need to buy a router?

Can anyone tell me how to start it? And are there any people have
experience in using the ML6652? Can you tell me how to make the
connection between the pins?


Thanks very very much!!
 
 
 

1. How to connect 100Base-TX w/o auto negotiation to 10/100Base

2. 100BASE-TX signal received by 10BASE-TX port

Hi, I have an interesting question for you all.

When two 10/100 Ethernet devices are configured statically, but
differently configured,
say, one device port is configured to 10M, while the other device port
is configured to
100M. And the two wronfully configured ports are connected with a
copper cable.

In this situation, the 10M device port looks working ok, while the 100M
device port looks
'link down'. My question is why the 10M device port looks working ok
(link-up).

The 10M device company claims the following statement;
---
If a speed mismatch were configured and an attempt at communication was
made, the 100BASE-TX data received by the 10BASE-T device could look
like real data and cause
the 10BASE-T device link to activate, causing errored data to be
received.
---

I wonder whether the above statement is correct or not. If correct, I'd
like to have
any document or comment explaining the behavior at 10M side. Thanks.

- jay

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