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Altera_Forum's avatar
Altera_Forum
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14 years ago

Cyclone III 3C120 Development Board, the other Clock!

Have one cuestion when load the NIOS processor inside the FPGA only appear available the clock of 50 Mhz, but the board have another of 125 MHz why can't use that?:) On-board clocking circui...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

No it's not generated by the PHY, it's a regular oscillator. Have a look at page 7 of the schematics.

You can use it if you want, it's connected to the A14 pin on the FPGA.