what is prescaled system clock ?

[hemant2007]

Hi

What do you meant by prescaled system clock ?

My SPI2 is connected to serial flash and core clock is 120Mhz. I want to calculate SCK baud rate using formula SCK baud rate = ( fSYS /PBR) x [(1+DBR)/BR]

PBR =2 DBR=0 and BR = 2

What is meant by prescaled system clock?

[meedandeys]

Hello,

DSPI module is clocked from Peripheral Clock, hence FSYS refers to peripheral clock. Please refer to Clock Architecture of your controller reference manual to understand the relationship/configurations of SystemClock to PBRIDGE clock.

I hope this helps.

[Alice_Yang · Accepted solution]

Hello undale,

Which chip do you use ?

The  fSYS means the system clock or bus clock .

Hope it helps

Have a great day,

Alice

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