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The module has a 24 MHz SMD clock oscillator providing a clock source for both the EZ-USB FX2LP USB FX2 microcontroller (XTALIN) and the FPGA as detailed in Table 17.
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title | 24 MHz clock signal details. |
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24MHZ1 | IO_L28N_2 GCLK3 | AE14 | 2 |
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Table 17: 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.