T2080 ECn_GTX_CLK125 Usage

[2007031026]

Hi，

    In my design，I only use the T2080  CPU's SGMII interface for Ethernet，is it necessary to connect the ECn_GTX_CLK125 pin with a 125MHz reference clock?

    Thanks!

[alexander_yakov · Accepted solution]

"When operating in SGMII mode, the ECn_GTX_CLK125 clock is not required for this port." - Section 3.19.9.1 of T2080 datasheet.

When this pin is not used, it is recommended to pull this pin low through a 2-10 kΩ resistor to GND (T2080 Design Checklist, Tables 29 and 30) 

Have a great day,
Alexander
TIC

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[2007031026]

Thank you！