10. Clock Interface
10.4 Connecting Clocks to a Phase-Locked System
When the processor is used in a phase-locked system, the external agent must phase lock its operation to a common MasterClock. In such a system, the delivery of data and data sampling have common characteristics, even if the components have different delay values. For example, transmission time (the amount of time a signal takes to move from one component to another along a trace on the board) between any two components A and B of a phase-locked system can be calculated from the following equation:
Transmission Time = (SClock period) - (tDO for A) - (tDS for B) -
(Clock Jitter for A Max) - (Clock Jitter for B Max)
Figure 10-5 shows a block-level diagram of a phase-locked system using the R4000 processor.
Figure 10-5 R4000 Processor Phase-Locked System
Copyright 1996, MIPS Technologies, Inc. -- 21 MAR 96
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