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A digital clock manager (DCM) is an electronic component available on some FPGAs (notably ones produced by Xilinx). A DCM is useful for manipulating clock signals inside the FPGA, and to avoid clock skew which would introduce errors in the circuit.
Video Digital clock manager
Uses of DCM
DCMs have the following applications:
- Multipling or dividing an incoming clock (which can come from outside the FPGA or from a Digital Frequency Syntetizer [DFS]).
- Making sure the clock has a steady duty cycle.
- Adding a phase shift with the additional use of a Delay-locked loop.
- Eliminating clock skew within an FPGA design.
Maps Digital clock manager
See also
- Clock signal
- Delay-locked loop
- Phase-locked loop
- Field-programmable gate array
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References
Source of article : Wikipedia
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