CtoS support of Multiple Clocks

In a previous blog entry we discussed C-to-Silicon’s (CtoS’s) ability to support multiple threads in a similar way that traditional Hardware Description Languages (HDLs) support multiple processes.

There are many applications, such as multi-rate DSP applications, in which it is not only necessary to describe the circuit as multiple concurrent threads but also that  these threads operate on different clock domains.

Multiple clocks are fully supported by traditional RTL based synthesis tools and therefore must also be supported by any viable ESL High Level Synthesis alternative.

SystemC and CtoS support multiple clock domains. Each thread declared inside an SC_MODULE can be clocked by a separate clock signal.

By supporting multiple threads and multiple clocks SystemC and CtoS provide a viable alternative to the traditional RTL Synthesis approach. This support is usually not provided by a pure C / C++ High Level Synthesis approach.