SNLA293 May   2022 DP83TC811R-Q1 , DP83TC811S-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2Hardware Configuration
    1. 2.1 Schematic
  4. 3Software Configuration
  5. 4Testing PMA
    1. 4.1 PMA Testing Procedure
  6. 5Testing IOP: Link-up and Link-down
    1. 5.1 IOP Testing Procedure
  7. 6Testing SQI
    1. 6.1 SQI Testing Procedure
    2. 6.2 SQI Mapping with Link Quality
  8. 7Testing TDR
    1. 7.1 TDR Testing Procedure
  9. 8Testing EMC/EMI
  10. 9Revision History

5.1 IOP Testing Procedure

Start of measurement:

For the IOP tests measuring link-up time either after power-up or after hardware reset, it is important to start the measurement of link-up time after the initialization configuration is loaded back into DP83TC811. As the configuration is loaded into the PHY by a controller, we recommend the controller to give an indication (a software bit or an IO state) after the last configuration register is written. This indicator going high is the start of measurement of link-up time.

Status to be poled:

Link-status is indicated by bit 14 of register 0x0133: 1 = link-up; 0 = link-down. This should be poled to indicate the event of link-up or link-down during these tests.

Note: If system desires no automatic link-up after power-up (link to only happen after writing the initialization script), managed mode of DP83TC811 should be used by using strap on pin LED_1.