topic Re: IMX6Sololite PCLK High Level DC input Voltage in i.MX Processors

IMX6Sololite PCLK High Level DC input Voltage

fisherhe — Wed, 22 May 2019 09:23:16 GMT

Hi,

Customer now is using IMX6SOLOLITE, and they has a camera connect to imx6sl by CSI module, and PCLK comes from camera to imx6. Now they want to know whether the High level DC input voltage(Vih) for PCLK is 0.7 x OVDD or 0.5 x OVDD?

In datasheet, there is a table as below:

From this table, we can see is 0.7 x OVDD.

But, in the chapter of CSI ,there are figures as below:

From Figure 23 and Table 37, It seems that the high time(P5) and low time (P6) of PCLK is calculateed from the middle of the wave, that is the point of 0.5 x VDD.

So, now is the question, the Vih of PCLK is 0.7 x OVDD(OVDD is 3.3v now, that is 2.31v), or 0.5 x OVDD? Cutstomer want to know the lowest value of the PCLK high levle. Now they find that the peak of PCLK on their board is 2.2v and still work OK.

Thank you!

Re: IMX6Sololite PCLK High Level DC input Voltage

igorpadykov — Wed, 22 May 2019 10:41:31 GMT

Hi Fisher

correct is Table 21 Datasheet.

Best regards
igor
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Re: IMX6Sololite PCLK High Level DC input Voltage

fisherhe — Thu, 23 May 2019 09:13:39 GMT

Thank you!