CPU Clock Source Overview

[δΈ­ζ–‡]

CPU clock sources:

  • 40M crystal

  • 480M DPLL

CPU theoretically supports a 4-bit divider:

F = 480M / (1+N), N from 0 to 15

Note: Validated stable range is up to 240M and down to 60M.

CPU Frequency Switching

  • CPU frequency can be switched dynamically based on workload to optimize power consumption. CPU main frequency switching is relatively complex and is implemented internally by the SDK.