i.MX ProcessorsのトピックRe: IMX6Q NVCC_RGMII pin

IMX6Q NVCC_RGMII pin

qumai — Tue, 05 Jan 2021 10:31:17 GMT

If I do not use the RGMII interface, I just use RMII interface,the power domain of which is NVCC_ENET,so i want to know that does NVCC_RGMII G18 pin have to be connected to a power source,eg 1.5V or connect NVCC_RGMII to GND.

Re: IMX6Q NVCC_RGMII pin

igorpadykov — Tue, 05 Jan 2021 11:36:53 GMT

Hi qumai

for pin voltage levels it is necessary to follow sect.4.6.2 General Purpose I/O (GPIO) DC Parameters

i.MX 6Dual/6Quad Applications Processors for Consumer Products - Data Sheet

as "OVDD" use column "Power Group" Table 96. 21 x 21 mm Functional Contact Assignments

NVCC_RGMII, NVCC_ENET should be always powered even ethernet interface is not used.

Best regards
igor

Re: IMX6Q NVCC_RGMII pin

qumai — Wed, 06 Jan 2021 02:26:52 GMT

but we have produce Thousands of boards ，but But no problem was found.So is there an accurate statement that no power supply is okay? Power supply is definitely better, but is it possible to have no power supply?

Re: IMX6Q NVCC_RGMII pin

igorpadykov — Wed, 06 Jan 2021 04:20:50 GMT

Hi qumai

it is necessary to follow sect.4.2.1 Power-Up Sequence, which implies that all power supplies

should be provided

i.MX 6Dual/6Quad Applications Processors for Consumer Products - Data Sheet

Some supplies can be turned off (if unused), they are described in sect.2.8 Unused analog interfaces

IMX6DQ6SDLHDG, Hardware Development Guide for i.MX 6Quad, 6Dual, 6DualLite, 6Solo Families of Applications Processors

Best regards
igor