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ADSP-21486 start up clock frequency

Question asked by cozy3_2393 on Jul 27, 2015
Latest reply on Sep 2, 2015 by MaheshN

Hi engineer,

 

I would like to ask you about start up clock frequency setting for ADSP-21486KSWZ-3AB.

Currently we mounted 25MHz Xtal connected with pin24 and pin25, and configed CLK_CFG[1:0] = "10" which is "16:1" setting.

 

In this case, start up clock frequency (25MHz x 16 = 400MHz) is upper than device's processor Instruction Rate (350MHz) max.

 

Is this CLK_CFG setting available for such a short start term?

Note : Of course we will downshift core clock rate after start up.

 

Thanks,

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