i.mx285 hardware design issue

[liyingchun]

Hi experts

I plan to use i.mx285 to design a gateway product. I want to know that how many layers of the pcb is Suitable for my design?(especially how many signal layers?)

The peripheral which I will use is that: 1 i2c, 2 spi, 3 uart, 1 sdio, 1 audio interface, 2 can, 2 usb, flash + DDR2, no ethernet and no graphic interface(LCD)

and the area of the pcb is rich.

There is a reference design:

Home Health Hub Reference Platform|Freescale​

how many layer of the pcb it use?

Thanks very much!

[Yuri · Accepted solution]

Hello,

Please refer to app note AN4215 (i.MX28 Layout and Design Guidelines).

http://cache.freescale.com/files/32bit/doc/app_note/AN4215.pdf 

Have a great day,
Yuri

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