2143284_en-US

[#1]

Using ENGCLK as 33 MHz Clock Source for External peripherals

Hi @davidtosenovjan,

In our MPC5674F-based design, the system clock is configured at 264 MHz.
We require an additional 33 MHz clock for external peripherals but DCLK_OUT is already used elsewhere in the design.

We are considering using the ENGCLK pin for this purpose.

1. Can ENGCLK be configured to output a 33 MHz clock suitable for external peripherals?

2. Based on the reference manual, if we switch to an external 16 MHz crystal using the ECSS bit, is it possible to derive 33 MHz from ENGCLK?

   
   
   

Thanks 
Narendra.C
MPC5674F 

Re: Using ENGCLK as 33 MHz Clock Source for External peripherals

hi @davidtosenovjan ,

Thanks for confirming.

Could you please share the manual or document where this block diagram is available?

Thanks
Narendra.C

MPC5674F 

Re: Using ENGCLK as 33 MHz Clock Source for External peripherals

Yes, you can use it as you stated.