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24 MHz Clock Oscillator

The module has a 24 MHz SMD clock oscillator providing a clock source for both the USB microcontroller and the FPGA as detailed in the table below.

Signal

FPGA pin

FPGA ball

24MHZ1

IO_L12P_2(bank 2)

N9

24 MHz clock signal details.

Digital Clock Manager (DCM)

The DCMs of the FPGA can be used to synthesize arbitrary clock frequencies from any on-board clock network, differential clock input pair or single-ended clock input. For further reference, please read Xilinx DS485:Digital Clock Manager (DCM) Module and the DCM chapter in Xilinx UG331: Spartan-3 Generation FPGA User Guide.


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