PIBS: Changing Speeds/Frequencies

While setting up a factory AMCC 440GX Eval Board, it may be necessary to change the default settings for frequency, CPU speed, etc.

To change the boards to 533MHz for the CPU speed, use the following command in PIBS:

chipclk prom0 cpu 533333333 152380952 76190476 76190476 152380952 30000

To change the boards to 800MHz for the CPU speed, use the following command in PIBS:

chipclk prom0 cpu 800000000 133333333 66666666 66666666 66666666 30000

Type "help chipclk" into PIBS to see information on what all the arguments mean. The above commands switch back and forth between the two configurations.

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