J11 FPGA JTAG connector?

Projects LimeSDR
1

Are there any off the shelf connectors available to connect an Altera USB Blaster to the J11 JTAG mini connector?

2

If not available you might have to make your own conversion.

3

Of course, but I was wondering if the PCB designers had a particular conversion cable/connector in mind or if the developers have been using one for signaltap etc.

4

Not sure… @zack may have a link he could share if so.

5

We had no particular conversion cable in mind. We use a hand made 0.05in <–> 0.1in (pin-to-pin) converter cable (0.05in socket at the one end and 0.1in pinheader at the other).

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6

I’m using one of these, with a normal 1.27 mm JTAG cable. Must be careful how the board is routed though:

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7

Ok, thank you. I’ll see what I can find or make then…

8

Hi @zener
Here are the links to the parts if you decide to make your own cable:

  1. Header connector;
  2. 1.27mm pitch receptacle;
  3. Cable.
9

Thanks!

10

Is the above correctly routed? That’s the AdaFruit one right?

11

Yes it’s Adafruit and no it’s not ‘correctly’ routed - there’s nothing available that does a ‘proper’ conversion so this board must be hacked. Mine arrived today and it looks easy enough to do.