Hi,
We want to use RGMII on i.mx8mp, but the ENET uses 3.3V. Could it work?
I tested 3.3V on ENET and found RGMII worked. However, in datasheet, RGMII requestes 1.8V only.
Could you give advice if it riskly, like stability?
BR.
Hunt Yang
Solved! Go to Solution.
Dear @WALNUTY ,
See the following screeshot, which is from i.MX8MP datasheet.
NVCC_ENET & NVCC_SAI1_SAI5 can be suppied by 3.3V.
So for Ethernet IO, 3.3V power is no problem.
>>Could you give advice if it riskly, like stability?
Most of gigabit Phy products supports 1.8V / 2.5V IO, it is easy to buy from current market. Actually ethernet phy with 3.3V can also be got, but few kinds of the products. I have ever used KSZ9031, which supports 3.3V IO, you can check it.
Thanks!
Regards,
weidong
Dear @WALNUTY ,
See the following screeshot, which is from i.MX8MP datasheet.
NVCC_ENET & NVCC_SAI1_SAI5 can be suppied by 3.3V.
So for Ethernet IO, 3.3V power is no problem.
>>Could you give advice if it riskly, like stability?
Most of gigabit Phy products supports 1.8V / 2.5V IO, it is easy to buy from current market. Actually ethernet phy with 3.3V can also be got, but few kinds of the products. I have ever used KSZ9031, which supports 3.3V IO, you can check it.
Thanks!
Regards,
weidong