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Author Topic: RJ45 pinout problem  (Read 944 times)
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Hi,
I received my MagJack RJ45 Ethernet connector, it is called:
Code:
Bel Stewart Magjack Ethernet SI-50152 for SB5100 SB5101

but I failed to find a datasheet which says which pin is associated to what!

could anyone please help to find out where such information could be found?

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http://pdf1.alldatasheet.com/datasheet-pdf/view/159906/BEL/SI-50152.html
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Thank you very much!!!

But in the datahseet the pins are placed regularly, as in every datasheet...but on my part as you see on the photo, pins are grouped into a 3 and 5 set. I can't find out which is P1, P2...

Also, there seems to be one pin more than it must be!

There is a set of 8 as usual (in two groups), then two sets of 2 pins, which must be for two LEDs, and then beside one of the 2-gropu, one additional pin I don't know about.

It is not like what is on the datasheet smiley-sad
« Last Edit: October 23, 2010, 09:14:47 am by ironbot » Logged

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Well cut a piece off UTP cable cut the connector on one side, stip the wires and start measuring with a multimeter.
The 3 and 5 at the front will be the 8 data lines. the two at the back will be one led. Then three at the back I think the to at the edge will be the other led.
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Fortunately I could get out a small transparent sticker which was on the bottom close to the pins, and now I can measure with multimeter without need of a cable and wires.

Could you please tell me what should I read on the voltmeter when touching pins?
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measure resistance with it, if it's anything less than infinity it's a contact
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Ok, and the resistance tells which pin is what? Do they must have special resistance? like, x-ohm for y-pin, etc.?
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