Vitis Model Composer is a cycle-accurate, high-level hardware modeling and implementation tool. In this context, a cycle is analogous to that of clock in hardware. You can partition the design into Subsystem block groups, where each Subsystem has a common cycle period, independent of the cycle period of other Subsystems. This section details how to group blocks into one cycle or clock domain and how to transfer data between these cycle domains. The rest of this section uses the terms cycle and clock interchangeably.