Author Topic: TE0720 Ethernet LEDs  (Read 369 times)

DG

  • Active Member
  • *
  • Posts: 26
TE0720 Ethernet LEDs
« on: February 05, 2019, 04:08:02 PM »


Hi there,

is there any document describing the use of the Ethernet PHY LEDs on the TE0720?
Normally the connection and traffic LEDs are provided by the PHY chip 88E1512 but in this case the information goes to the
CPLD and the traffic and the connection LEDs on the carrier board (e.g. TE0706) are connected to the Zynq.

How is this intended to be used?

Thank you very much in advance,
Dino

JH

  • Hero Member
  • *****
  • Posts: 885
Re: TE0720 Ethernet LEDs
« Reply #1 on: February 05, 2019, 05:12:23 PM »
Hi,
LED Pins from ETH PHY of the TE0720 module are not routed to the connector --> module B2B connector pins are limited and Status LEDs are not needed for functionality.

On TE0706 ETH connector Pins goes to B2B connector, so they are optional LEDs for the module, which is connected, see schematic :

br
John

DG

  • Active Member
  • *
  • Posts: 26
Re: TE0720 Ethernet LEDs
« Reply #2 on: February 06, 2019, 07:36:09 AM »
Hi John,


thank you very much for your reply.
So on the TE0720, the information needed (PHY_LED0/1/2) goes to the CPLD. Is there any information about what is done with these signals in the CPLD? Is there a possibility to drive those signals back to the FPGA? Maybe the X1, X2... signals?

Kind regards,
Dino

JH

  • Hero Member
  • *****
  • Posts: 885
Re: TE0720 Ethernet LEDs
« Reply #3 on: February 06, 2019, 08:23:01 AM »
Hi,
at the moment only older documents:

rework of CPLD description is planned, but I can't tell any timeline.
br
John

DG

  • Active Member
  • *
  • Posts: 26
Re: TE0720 Ethernet LEDs
« Reply #4 on: February 06, 2019, 08:33:37 AM »
Thank you very much John,

this is, what I was looking for!

Kind regards,
Dino