IPC-40026: System clock frequency mismatch

Description

System clock ports of protocol IP must be driven, if present. These ports can be driven only by System clock ports of System Clock IPs.

Further, the System clock frequency of protocol IP must match the System clock frequency of the System Clock IP port driving them.

Figure 1. System clock ports of protocol IP driven by System Clock IP

Recommendation

Ensure that system clock inputs of protocol IPs are driven by system clock outputs of System Clock IP only.

In case of system clock frequency mismatch either connect the system clock input to the right system clock output of the system clock IP or regenerate the system clock or protocol IPs with the right system clock frequency parameters to ensure that frequencies match on both sides.

Severity

Critical

Tags

Tag Description
system Design rule checks which validate full-system design.

Device Family

  • Agilex®