SDAA067A August   2025  – March 2026 DP83826AE , DP83826AI , DP83826E , DP83826I

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Critical Design Change for DP83826Ax Rollover
  6. 3Difference Between DP83826x and DP83826Ax
    1. 3.1 Fast Link-Drop (FLD) Strap Configuration
      1. 3.1.1 Basic Mode
      2. 3.1.2 Enhanced Mode
    2. 3.2 EMC Performance
  7. 4Summary
  8. 5References
  9. 6Revision History

3.2 EMC Performance

DP83826Ax offers significant EMC performance boost over DP83826x in both the basic and the enhanced mode. Table 3-4 lists the DP83826x and DP83826Ax performance difference. To enable better EMC performance, Strap11 MUST be pulled HIGH regardless of mode in DP83826Ax.

The EMI/EMC compliance testings are done on DP83826AEVM. Please see section 4 of the DP83826AEVM User's Guide for detailed EMI test results.

Table 3-4 DP83826x and DP83826Ax EMC Performance Comparison
TestStandardTest LevelDP83826xDP83826Ax
ESDIEC 61000 4-2+/-4kV Contact (RJ-45)
+/-15kV Air (on cable)		+/- 4kV Criteria A
+/- 8kV Criteria B		+/- 8kV Criteria A
SurgeIEC 61000-4-5+/-2kV: line to line
+/-4kV: line to GND		+/- 2kV Criteria B+/- 2kV Criteria A
Radiated ImmunityIEC 61000-4-610V/m (150kHz - 80MHz)Criteria A at 3Vrms
Criteria B at 10Vrms		Criteria A at 10Vrms

Criteria A: No link drop of packet error and loss during the EMC testing.

Criteria B: Link drop is allowed, but PHY must recover the link without reset.