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Altera_Forum's avatar
Altera_Forum
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9 years ago

CPLD Hard Reset

Hi all,

I am using a Max 10: 10M02SCM153C8G . I am facing a problem with reprogramming it. After programming the CPLD, now the JTAG is not able to identify the CPLD at all . This is the first time I am encountering such a problem. I want to know if there is a way of doing a hard reset on the CPLD to bring it back to its original state. Kindly let me know the procedure on how to do a Hard Reset on the CPLD.

Thanks,

Sid

2 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    9 years ago

    Handbook says that in some situations, e.g. after issuing reserved JTAG commands, a power cycle is required. Or are you disabling JTAG in user mode?

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    9 years ago

    Hey, thanks for the reply, but i am not using any reserved JTAG commands, I am using a byte blaster to program the CPLD.

    But now I am getting the below error message:

    Error: Can't access JTAG chain

    Error: No device detected

    Since the byte blaster is not able to see the CPLD at all I am not able to reprogram it and I need to hard reset the CPLD to bring it back to the original state.