Ethernet
Applicable receivers: BD970
The receiver contains the ethernet MAC and PHY, but requires external magnetics. The PHY layer is based on the Micrel KSZ8041NLI it is set to default to 100 Mbps, full duplex with auto-negotiation enabled. The receiver has the proper PHY termination on the differential signals as well as Bulk capacitance for the magnetics center tap.
Isolation transformer selection
|
Parameters |
Value |
Test condition |
|---|---|---|
|
Turns Ratio |
1CT:1CT |
|
|
Open-circuit inductance (min.) |
350 uH |
100 mV, 100 kHz, 8 mA |
|
Leakage inductance (max.) |
0.4 uH |
1 MHz (min.) |
|
DC resistance (max.) |
0.9 Ohms |
|
|
Insertion loss (max.) |
1.0 dB |
0 to 65 MHz |
|
HiPot (min. |
1500 Vrms |
|
Ethernet reference design
The ethernet interface can be implemented using a single part or using discrete components. For more information, see:
