Original question:
DP83826E: How to replace KSZ8081MNX by DP83826E for the case of EtherCAT(Beckhoff ET1100)?
Tool/software:
Hello,
i have questions regarding DP83826 in use with Beckhoff ASIC (ET1100).
Is it possible to use the DP83826 only with Strapping configurations ( odd nibble detection off, FLD off) ?
Especially the link state causes problems, LED0 is blinking after a link was established and LED1 isn´t working too, as expected. The ET1100 needs a low active signal when link is established...
Best regards
Martin
Hi Martin,
DP83826 can be used with only strapping configuration.
To disable odd nibble detection and FLD, you can set the PHY in ENHANCED MODE (MODESELECT = F)
You can set strap1 and strap7 to mode 0.
Please follow Figure 8-13 in DP83826 Datasheet for more information (Rev. I).
In enhanced mode, LED polarity is auto-detected at the power-up.
If you need active low signal, please follow the strapping configuration below:
|
Best,
J
i know that, but as i described in the question: The LED0 Output is blinking after a link is established, this causes the ET1100 to open/close the port in the frequency of the blinking.
What i would need for working system would be only "Link OK", but i think this could only be changed with the SM Interface. Or is there a different signal which signals Link ok only ?
