topic i.MX6 8 bit Parallel Camera to 20 Bit CSI mapping in i.MX Processors

i.MX6 8 bit Parallel Camera to 20 Bit CSI mapping

DavidLundquist — Tue, 07 Oct 2014 14:26:11 GMT

Hopefully a simple question, but I can't seem to find a concise answer. Simply put, when mapping an 8 bit parallel gray scale sensor to the 20 bit parallel CSI port, what are the mapping options. I see the SDB board uses the top 8 bits (D12:D19) of the CSI port. I recall reading somewhere that the next 8 bits down (D4:D11) are also supported. I think I've also seen the low 8 bits used.

I just want to capture a byte oriented frame buffer without any overhead so I want to be sure I pick a mapping that doesn't force me to capture 16 or 32 bit words. I assume whatever mapping restrictions there are they are the same for all i.MX6?

Thanks,

Dave

Re: i.MX6 8 bit Parallel Camera to 20 Bit CSI mapping

igorpadykov — Tue, 07 Oct 2014 23:42:12 GMT

Hi David

only supported formats are given in

Table 66. Camera Input Signal Cross Reference, Format, and Bits Per Cycle

IMX6DQCEC

From sect.37.4.3.2.1 Parallel Interface IMX6DQRM :

"..according to configuration of DATA_WIDTH. If DATA_WIDTH is configured to N,

then 20-N LSB bits are ignored."

Best regards

igor

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------