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Altera_Forum
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13 years ago

Vicm for REFCLK in Cyclone IV GX

the cyclone4 handbook say that: Vicm divided by two 1K res from a 2.5v source,that is 1250mv(Chapter 1: Cyclone IV Transceivers Architecture 1–29 Transceiver Clocking ) ..but the Switching Chara...
Altera_Forum's avatar
Altera_Forum
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13 years ago

i use 3v3 lvpecl as refclk input votage level.