Hello,
With reference to i.MX8mini EVK board (BASE and SOM boards),
The DC parameters (Voh/Vol) of i.MX8MINI are not meeting the DC levels (Vih/Vil) of I2C level translator IC (NTS0104PW) used in base board of EVK (designator:U203). Details are provided below. Was this not noticed or is
there any other aspect which i am missing? Kindly confirm.
Sl no. | Voltage parameter | i.MX8MINI Vdd=1.8V | i.MX8MINI Vdd=1.8V | NTS0104PW Vdd=1.8V | NTS0104PW Vdd=1.8V | |||
---|---|---|---|---|---|---|---|---|
Min. | Max. | Min. | Max. | |||||
1 | VIH | Vdd-0.2=1.6 | 0 | |||||
2 | VIL |
| 0.15 | |||||
3 | VOH |
|
| |||||
4 | VOL | 0 |
|
Regards,
Suhas
Hi Suhas
i.MX8M Mini Voh is given for Ioh=1.6mA, while NTS0104PW input current is
much less (about several uA), so Voh level will be close to 1.8V,
satisfying NTS0104PW requirements.
Best regards
igor
-----------------------------------------------------------------------------------------------------------------------
Note: If this post answers your question, please click the Correct Answer button. Thank you!
-----------------------------------------------------------------------------------------------------------------------
Thanks for the reply Igor,
We have the same concerns with the level translator IC (NTS0102) with designator U508 used in Base board of i.MX8mini EVK.
Though it might pass the DC parameters with i.MX as suggested by you, Level translator IC input DC parameters does not meet the with output DC parameters of Ethernet PHY IC (AR8031). Kindly confirm
Regards,
Suhas
Hi Suhas
suggest to check these parameters yourself using above
considerations as example.
Best regards
igor