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JTixi's avatar
JTixi
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6 years ago

Is it possible to force all I/O HighZ before programming (CPLD Max_V)

On our circuit board, the TDO line as been linked through another I/O pin which is not used in the project (BGA 100 package). The ​first programmation was good. However the unused I/O are linked to g...
JTixi's avatar
JTixi
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6 years ago

​Hello!

I thank you for your reply. I think however that the JTAG chain is checked at beginning of normal programmation process, without tri-stating the I/O. It is the raison why I allways get an error (Device not connected). Is there any method to force tri-state on I/O before programming or skip JTAG test, using a script on console for example ?

JMT.