IMX 6 Solo Free run clock

[DK4509]

Hi,

Currently, we are designing the MCIMX6S5EVM10AD part number IMX 6 Solo CPU.

A free run clock pin (EIM ACLK FREERUN) on the IMX 6 solo processor should be capable of carrying up to 133MHz.

We need FREERUN clock to drive the EIM bus and enable us to run the core at 1GHz at the same time.

Is it possible to operate the Core at 1GHz using the free run clock(ACLK) of 133MHz?

Thanks,

Dinesh

[Alejandro_Salas]

Hello, 

Unfortunately we have not that test in the IMX6 Solo, but if you check the datasheet you can find these information:

In your case, if you have the 24 MHz in use, you maximum frequency in the core will be 996 MHz.

As you can see in the note, the frequency is affected by the system, so, those conditions that you are describing are so difficult to get.

Best regards!

[DK4509]

Hi,

I am planning to provide on the CLK1_P/N pins a 133MHz clock of the IMX 6 solo processor.

Can I get a core clock frequency output, near to 1GHz if 133MHz is provided to CLK1_P/N signals?

If so, how will the calculation be determined on?

Thanks,

Dinesh

[DK4509]

Hi,

Currently, we are designing the MCIMX6S5EVM10AD part number IMX 6 Solo CPU.

Question - 1

We planned to use the Input reference clock to the ACLK pin (EIM_ACLK_FREERUN) 104MHz to enable the EIM module.

Whether it is mandatory to source the external clock 104MHz to the ACLK clock to drive/enable the BCLK which it act as a reference clock for CPLD?

Please confirm once on the above point.

Question - 2 

If so, we placed crystal oscillator externally to generate 104MHz continously is there any impact on BCLK genertaion.

Because there are few steps to enable the BCLK to work as in Synchronous mode, in that first step Disable the EIM clock was mentioned in the datasheet.

If we are using external cryctal oscillator the clock should be continous then the first step is not matching as per the datasheet recommendation. please confirm whether it is prefered to use the crystal oscillator externally for ACLK pin. Please suggest your comments.

Thanks,
Dinesh