i.MX ProcessorsのトピックRe: Question, i.MX6Quad power-on sequence

Question, i.MX6Quad power-on sequence

SLICE — Wed, 15 Mar 2017 03:34:27 GMT

Dear team,

I would like to ask about power-on sequence for i.MX6Q.

After reading chapter 4 in your Hardware Development Guide for i.MX6Quad, my customer wants to know whether the following sequence, in the following order, can be allowed.

- 2.8V(VDDHIGH_IN) and 1.2V(NVCC_RGMII) are turned on simultaneously.

- Then, 3.3V(NVCC_EIM0~2,NVCC_ENET,NVCC_GPIO,NVCC_SD3,NVCC_NANDF,NVCC_JTAG) and 2.5V(NVCC_CSI,NVCC_SD1,NVCC_SD2) are turned on simultaneously.

- Then, NVCC_DRAM(1.5V) is turned on.

Could you show me whether the above is allowed?

Thanks,

Miyamoto

Re: Question, i.MX6Quad power-on sequence

igorpadykov — Wed, 15 Mar 2017 05:52:17 GMT

Hi Miyamoto

yes such power-up sequence is allowed, note VDD_SNVS_IN supply must be

turned on before any other power supply and it may be connected (shorted) with VDD_HIGH_IN supply.

Best regards
igor
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