Hi there,

I hope this questions wasn't already asked but I couldn't find an answer yet.

I've been thinking of programming a XC9572XL with an arduino and JTAGWhisperer (https://github.com/sowbug/JTAGWhisperer).
What I can't understand is if the XC9572XL has JTAG pins 5 volts compatible or if only the I/O pins are 5 volts compatible.
Another doubt I have is if the power supply should be 3.3 volts even when the I/O pins are driven with 5 volts.

Thank you!
Michele

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http://WilsonMinesCo.com/ lots of 6502 resources
The "second front page" is http://wilsonminesco.com/links.html .
What's an additional VIA among friends, anyhow?

Thank you Garth Wilson.
I had a look before posting but I couldn't find anything, I'm gonna double check.

I am using the xc9500xl series too with 5V signals. However to program them I use a Xilinx programmer, that uses a separate pin to sense the supply voltage.

So, by default the programming interface pins are used with 3.3V.

I wouldn't recommend programming it with 5V, but the datasheet should be your friend.

The power supply is always 3.3V. The outputs are 3V TTL. Inputs accept 5V TTL signals though.

You can see my MicroPET for an example how I used it in an otherwise 5V system.

André

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Author of the GeckOS multitasking operating system, the usb65 stack, designer of the Micro-PET and many more 6502 content: http://6502.org/users/andre/

Thank you Fachat,

I'm going to program the xc9500xl usi a raspeberry pi and xc3sprog to be on the safe side.
I found a couple of nice tutorials for that:
https://blog.jimmo.id.au/2018/11/26/pro ... ry-pi.html
https://linuxjedi.co.uk/2021/11/25/revi ... pberry-pi/