6 Replies Latest reply on May 16, 2017 7:59 PM by Intel Corporation

    Intel 82579LM Gigabit Phy & QM77 PCH - TCTL register and Tx functionalities

    tweety

      Hello,

       

      I'm working on the Intel 82579LM linked to a QM77 PCH (7/C210 Series Chipset).

       

      When activating the Tx functionalities, using the TCLT register ( p193 of Intel® 82579 GbE PHY: Datasheet, Vol. 2.1 )

      I noticed that if the "Reserved" "Read only" bit 28 was not specifically set to value '0b1', the Tx functionalities do not work.

       

      Although I agree it is not "best-practice" to set "Reserved" bits, is this behavior normal ?

       

      Many thanks !