Cyclone III EP3C10F256C6N JTAG TMS TDI internal pull-up power?

Question

Hi

Cyclone III EP3C10F256C6N VCCIO Bank1 : 1.8V

After use PS_MODE to download rbf file.

The TMS and TDI two pin will have internal pull-up.

It's seems not pull up to VCCIO1,have some leakage path will cause VCCIO1 to 1.9V

If I short TMS and TDI to GND, can make VCCIO1 back to 1.8V.

Does any body the detail TMS and TDI internal pull-up circuit?

Is possible turn off the internal pull-up after download rbf file?

Thanks a lot for help

Albert

altera_forum · Answer

Hi,

Programmable pull-up resistors are not supported on the dedicated configuration,JTAG, and dedicated clock pins.

Best Regards,

Anand Raj Shankar

(This message was posted on behalf of Intel Corporation)

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