2.12.1. Clocking

The CCI-400 has a single main clock, ACLK, that is distributed to all sub-blocks. Where masters and slaves connecting to the CCI-400 are in a different clock domain, it is necessary to use external clock-domain-crossing bridges.

Using the AXI low-power interface, it is possible to disable the clock to the CCI-400 when it is idle. When the clock has been disabled, incoming transactions are stalled and any changes to other inputs are not registered until the clock is re-applied.

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