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Altera_Forum
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11 years ago

using 24mhz on board oscillator clock on bemicro CV board

Hi I am using BeMicro CV board for a simple demo . My design uses the 24Mhz clock which is present on board . The reference guide mentions this to be at pin M9. Using quartus software ...
Altera_Forum's avatar
Altera_Forum
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11 years ago

Minor point but those constraints are found in the Quartus Settings File (qsf), rather than the qsys file.

It does sound like there's a possible board fault. However, this oscillator source is also used by the on-board USB-Blaster. Does that work or are you using the JTAG chain header to program the FPGA?

Try driving the clock out of one of the pins in a user header. In your code simply 'assign' a spare I/O pin, that goes to the header, the 24MHz clock.

Cheers,

Alex