Ethernet PHY for Teensy 3.5 & 3.6

By PaulStoffregen

4 layer board of 2.40 x 0.70 inches (61.0 x 17.8 mm).
Shared on August 20th, 2016 17:56


Ethernet PHY for Teensy 3.5 & 3.6

By PaulStoffregen

4 layer board of 2.40 x 0.70 inches (61.0 x 17.8 mm).
Shared on August 20th, 2016 17:56

Ethernet Shield for Teensy 3.5 and 3.6.

See this Kickstarter update for more info.

Please understand this shield has very limited software support at this time. However, Manitou’s early benchmarks show excellent performance we can someday hope to achieve as the software matures.

Bill of Materials

Qty  Part                               Digikey
---  ----                               -------
1    LAN8720A                           LAN8720A-CP-CT-ND
1    CAT811T                            CAT811TTBI-GT3OSCT-ND
1    Crystal, 25 MHz                    535-13419-1-ND
1    Transformer, Pulse H1102FNL        553-2204-1-ND
1    Connector, RJ45                    A102068CT-ND
1    Capacitor, 1nF, 2000V              709-1036-1-ND
2    Capacitor, 33pF                    490-5936-1-ND
1    Capacitor, 470pF                   490-1297-1-ND
3    Capacitor, 10nF                    445-1260-1-ND
1    Capacitor, 22nF                    490-8022-1-ND
3    Capacitor, 1uF                     399-5090-1-ND
1    Resistor, 33, 1%                   311-33.0LRCT-ND
4    Resistor, 49.9, 1%                 RMCF0402FT49R9CT-ND
4    Resistor, 75, 1%                   RHM75.0HCT-ND
2    Resistor, 330, 1%                  311-330LRCT-ND
1    Resistor, 1.5K, 1%                 311-1.50KLRCT-ND
2    Resistor, 12.1K, 1%                P12.1KLCT-ND
1    Inductor, Ferrite bead             553-2387-1-ND
2    LED, Green                         475-1410-1-ND

Parts Placement Diagram

Warning: you must solder the LAN8720A’s center pad. This chip will not work if only the outside 24 pins are connected.

A future version of this board may include Power Over Ethernet support…..