Forum Discussion
LakshmiPriya
New Contributor
New ContributorIntel Cyclone 10 LP TDI and TMS
Hi,
It looks like the TDI and TMS are internally pulled up to VCCIO (3.3V), but when we want to flash the FPGA through intel download cable, the voltage levels are all at 2.5V. This will cause a co...
Farabi_Altera
Regular Contributor
Regular ContributorHello,
Please refer to this : https://www.intel.com/content/www/us/en/docs/programmable/683546/current/pull-up-and-pull-down-of-jtag-pins-during.html
You can't disable the internal weak pullup. You can change the VCCIO of the IO bank or change VCC of the JTAG signal.
Side notes: There will be no contention between 3.3V and 2.5V as the Vih/Vil is the same.
regards,
Farabi
