Hardware, Software, Testing Requirements, and Test Results
31
TIDUES1A – October 2019 – Revised February 2020
Copyright © 2019–2020, Texas Instruments Incorporated
EMC Compliant 10/100-Mbps Ethernet PHY Reference Design With IEEE
802.3at Type-1 (
≤
12.95 W) PoE-PD
Observation:
No errors are observed over multiple iterations as
shows. That concludes the
BER is no more than 10
–11
with less than a 5% chance of error.
Figure 29. Bit Error Rate (BER) Test
3.2.2.3
EMI/EMC Tests
This reference design is tested for EMI/EMC according to standards:
•
Radiated emission: CISPR 22 (EN 55022) and FCC Part 15 Subpart B - Class A and B limits
•
Conducted immunity: IEC61000-6-2 for ESD and IEC61000-4-4 for EFT
3.2.2.3.1
Radiated Emission Test
Any electronic products must pass applicable EMC requirements for the area where that product is to be
sold. Several factors determine the type of EMI testing to be performed, including where the product will
be sold, the classification of the product(industrial, scientific, medical, automotive or information
technology (IT)) and how the product will be used. For example, in the US, the FCC and the American
National Standards Institute (ANSI) have established extensive regulations for EMI testing. The part 15
requirements of the FCC apply to broadcast receivers, digital devices, switching power supplies and
fluorescent lights, while its Part 18 requirements apply to industrial, scientific and medical products.
