FPGA, SoC, And CPLD Boards And Kits
FPGA Evaluation and Development Kits

program device Epm

LFun0
Beginner
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Hi all, I need to burn cpld epm7256 and while using byteblaster usb and quartus 13 i can't access the device as it seems on the attached files, what does i miss? 

Thank you.

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ShafiqY_Intel
Employee
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Hi LFun0,

 

The TDI and TMS pins have internal weak pull-up resistors, while the TCK pin has an internal weak pulldown resistor. 

 

Intel recommends to:

  • pull the TMS signal high externally through 10-kΩ and the
  • pull the TCK signal low through 1-kΩ resistors.

 

Please refer to following link for more details (on page 5):

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/an/an100.pdf#page=5

 

 

Thanks😉

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