2.4.7. Timestamp interpolator

CoreSight SoC-400 components require timestamp values that allow software to correlate events. A timestamp generator generates timestamp values. This is typically at a clock rate that is much slower than the operating frequency of CoreSight SoC-400 components. The timestamp interpolator uses the timestamp values from the timestamp generator as reference and generates timestamp values at a rate required by CoreSight SoC-400 components.

The timestamp interpolator has the following key features:

SCLK

This is the slow clock on which the timestamp generator operates. SCLK is the clk port on the timestamp generator.

FCLK

This is the fast local clock on which the timestamp interpolator operates. FCLK is the clk port on the timestamp interpolator.

Figure 2.24 shows the external connections on the timestamp interpolator.

Figure 2.24. Timestamp interpolator block diagram

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