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Altera_Forum
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13 years ago

I/O states in Cyclone III in JTAG mode

Hello all, In Altera's application notes it is specified that during JTAG mode all I/O pins are tristated. It is sometimes mentioned that the weak pull ups are enabled when the I/O pins are t...
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Altera_Forum
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13 years ago

Hi FvM,

In the hadbook it is mentioned that :

"All user I/O pins are tri-stated during JTAG configuration. Table 9–15 lists the function of each JTAG pin."

I asked whether these pull ups are enabled after entering BIST mode. I don't see it in the handbook.

It will be much appreciated if you tell me where I can find this information.

Thank you,

Boris.