How to get ref design SPF-28865 for IMX6UL and PF3000

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How to get ref design SPF-28865 for IMX6UL and PF3000

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semirfazlagic
Contributor III

We are starting to develop our IMX6UL (9x9mm) shape board, based at PF3000 PMIC.

On your site I can find only design SPF-2816/SPF-2817 based at shape 14x14mm

and with discrete power supplies, which is not some special help for me.

Reading some mails, I have seen that there is design SPF-28865, based at PM3000 just tailored for IMX6UL

but I can't find it.

I have two questions:

1) How to get ref design (SCH and BOM) for SPF-28865 ?

2) I analyzed SPF-2816/SPF-2817 design about RMII (Ethernet) and I saw one unusually interface for RMII.

Practically , in this design there is no typical RMII interface signal ENET_REF_CLK (25 or 50 mhz) which

mainly is coming from external PHY or some clock generator. In this design I have ENET_TX_CLK coming from

IMX6UL  towards PHY.  I never seen before some type of connection. It seems as one AUX signal out of RMII standard.

I can understand that this signal can be used for external PHY as CLK source, but it is not clear how MAC inside IMX6UL get REF_CLK  (25/50 Mhz).

For example, I developed board based at IMX6DL and in this case I had dedicated pin for external REF_CLK but here I can't see it.

Maybe is some way IMX6UL locally generates from main 24mhz via some PLL ??

Could you be so kind to answer to my questions

Regards

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semirfazlagic
Contributor III

Thank your very match.

Unfortunately, I can't see some option for creating service request.

Could you be so kind to show me ?

Thank in advance

Regards

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640 Views
igorpadykov
NXP Employee
NXP Employee
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igorpadykov
NXP Employee
NXP Employee

Hi Semir

for obtaining SPF-28865 please create service request.

Regarding IMX6UL ethernet clocks please check sect.

18.7.14 Analog ENET PLL Control Register (CCM_ANALOG_PLL_ENETn)

sect.30.4.2 GPR1 General Purpose Register (IOMUXC_GPR_GPR1)

i.MX6UL Reference Manual for description of ENET_REF_CLK.

http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6ULRM.pdf

Best regards
igor
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