Lattice ISP interface

Dec 12, 2006 2 Replies
D

Hi,



I'm looking for some information on the proprietary ISP interface used by Lattice (specifically in the ispGDS22 device)



I've managed to find a Lattice document describing the function of the SDI,SDO,MODE + SCLK pins and the devices internal state machine, but nothing on specifically how to get the fuse map /JEDEC file into the device 'in-situ'. I've searched the Lattice website, but they don't seem to give out this information readily.



Can anyone direct me to a suitable resource?



Many thanks



David



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A

You might be able to use an embedded JAM Player. AFAIK Lattice does provide a tool to covert their fus map files into something suitable for use with a JAM Player. Lattice's ispVM might also be an option.

Regards Anton Erasmus

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J

On 12 Dec 2006 07:15:14 -0800, "David" wrote in comp.arch.embedded:

I agree with Anton, the ispVM package (free download) probably has all the information you need to either build an in-circuit programming routine into your firmware, or develop an external driver.

The C source code is a hideous, awful, stinking mess, but it does work.

Jack Klein Home: http://JK-Technology.Com FAQs for comp.lang.c http://c-faq.com/ comp.lang.c++ http://www.parashift.com/c++-faq-lite/alt.comp.lang.learn.c-c++ http://www.contrib.andrew.cmu.edu/~ajo/docs/FAQ-acllc.html
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