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SNVS Regulator

Question asked by Eishi Shibusawa on Aug 22, 2018
Latest reply on Aug 23, 2018 by igorpadykov

Dear Sir

 

I refer to the IMX6SDLRM Rev.4.

P4516 51.5 SNVS Regulator

If VDDHIGH_IN is present, then the SNVS_IN supply is internally shorted to the VDDHIGH_IN supply.

VDDHIGH_IN can be separated from SNVS_IN by setting the PMU_MISC0[discon_high_snvs] bit.

 

P910 CCM_ANALOG_MISC0n field descriptions (continued)

discon_high_snvs : This bit forces the short between VDDHIGH_IN and VSNVS_IN to open when asserted. This is useful in power cases where SNVS_IN > VDDHIGH_IN.

 

I refer to the schematic of MCIMX6DL-SDP (SPF-27417_C5.pdf).

VDDHIGH_IN_1/2 = VDDHIGH_IN = VGEN5 = 2.8V

VDD_SNVS_IN = VSNVS_3V0 = 3.0V

(SNVS_IN > VDDHIGH_IN)

 

Q1.

Is it necessary to set PMU_MISC0[discon_high_snvs] bit when designing like MCIMX6DL-SDP?

 

Best Regards,

Eishi SHIBUSAWA

 

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