Outputting the ECO clock out to GPIO

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AmSa_4551891
Level 2
Level 2
5 replies posted 5 questions asked First reply posted

Hi ,

I am using CY8C4128LQI-BL543 trying to measure the ECO frequency with a frequency counter. I am using the reference guide for it. unfortunately, there is not reference to how to route the ECO to the GPIO for measurement, although it is mentioned in the reference document that it is needed as part of the Xtal trimming

the reference document is here:

https://www.cypress.com/file/139476/download

and the reference for routing is here:

pastedImage_1.png

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AmSa_4551891
Level 2
Level 2
5 replies posted 5 questions asked First reply posted

Hi

Managed to figure out (it is written in the 3.1 version but works in Psoc4 also):

   *(uint32*) CYREG_GPIO_PRT2_PC = 0xDB6DB6;

    *(uint32*) CYREG_HSIOM_PORT_SEL2 |= 0xA0000000;

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1 Reply
AmSa_4551891
Level 2
Level 2
5 replies posted 5 questions asked First reply posted

Hi

Managed to figure out (it is written in the 3.1 version but works in Psoc4 also):

   *(uint32*) CYREG_GPIO_PRT2_PC = 0xDB6DB6;

    *(uint32*) CYREG_HSIOM_PORT_SEL2 |= 0xA0000000;

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