topic Re: iMX6 Quad PoP Package supporting LPDDR2 in i.MX Processors

iMX6 Quad PoP Package supporting LPDDR2

pranavparmar — Mon, 17 Jun 2019 05:08:07 GMT

Dear Reader,

I want to use the PoP version of iMX6 in my new design. But there are no reference schematics for the same. Neither are any supported LPDDR2 memories described. I reference some of the blogs regarding the same in community and found that EDB8164B4PT-1DAT-F is compatible.

When I saw the pin connection between two I made following observation:

As per the ball assignment processor channel 1 is connected to memory die 0 and, processor channel 0 is connected to memory die 1. But he Clock Enable signal (CKE_Px) is exchanged, i.e. Processor CKE0_P0 is connected to Memory CKE_A and CKE0_P1 is connected to CKE_B.

Will this configuration work? Or is there any other LPDDR supported?

Thanks in advance.

Pranav

Re: iMX6 Quad PoP Package supporting LPDDR2

igorpadykov — Mon, 17 Jun 2019 06:38:30 GMT

Hi Pranav

one can look at below links (also some info were sent via mail)

https://community.nxp.com/thread/472137

linux-imx - i.MX Linux kernel

Best regards
igor
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Re: iMX6 Quad PoP Package supporting LPDDR2

pranavparmar — Mon, 17 Jun 2019 08:38:02 GMT

Dear Sir,

Thanks for your kind reply. We are planning to use MCIMX6Q7CZK08AE in our system to get smallest form factor. Moreover MT42L128M64D2LL-25 is obsolete. So EDB8164B4PT-1DAT-F is replacement of the same. But still clock enable is crossed.

Please clarify.

Thanks

Re: iMX6 Quad PoP Package supporting LPDDR2

igorpadykov — Mon, 17 Jun 2019 11:47:44 GMT

DRAM_CKE0P0 AA29 , DRAM_CKE1P0 Y29 in Table 85. 12 x 12 mm

Functional Contact Assignments i.MX 6Dual/6Quad Consumer-PoP

Applications Processor Data Sheet are defined per sect.2.1 LPDDR2 12x12 PoP 2-channel 2x32 package

ballout LPDDR2 JESD209-2D specification.

https://www.nxp.com/docs/en/data-sheet/IMX6DQCPOPEC.pdf

Best regards
igor