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Altera_Forum's avatar
Altera_Forum
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10 years ago

Conflicting VCCIO settings

I'm creating a design for Arria 10 that uses the Bitec HDMI IP to receive and transmit video + auxilliary data. A Bitec HDMI input output board is connected to an ReflexCES ALARIC development board v...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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At a guess, you've got hdmi_rx_hpd_n set as I/O standard 1.5V and fmc_clk_dir set as IO standard 1.8V, and they're both in the same bank 3A. What is your VCCIO voltage set to for this bank?

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You are absolutely right. I'm using a mix of two reference designs (ReflexCES's and Bitec's) and got a lot of pin assignments mixed up, as I'm relatively new to this. I have reduced my pin-count to only the necessary ones now and fixed the VCCIO settings. I'm using default 1.8V VCCIO for all HDMI i2c pins.

Thank you!