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8 years, 9 months ago.
Does not connect ethernet port when reset power supply 3.3v
Hello
I'm using a K64F with its own hardware. The K64F runs on 3.3V of my hardware. Sometimes I do not connect K64F ethernet port with my pc. I need to reset the power supply several times until I connect an ethernet port. What is the problem? Bad ethernet port configuration? Transient current does not reach K64?
I look forward to your help.
Greetings.
Juan
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Juan,
Did you design you own hardware around the k64f, is this what you are implying?
Regards,
Andrea, team mbed
posted by Andrea Corrado 19 Jan 2017Hi Andrea
I designed the hardware around the FRDM-K64F. But this is simple, it consists of a power source of 3.3v @ 100mA. In addition to analog / digital inputs / outputs.
The problem is after the K64 is running in continuous mode. If there is a power outage when resetting in the short time (10 sec), it does not connect the K64's ethernet port to the network.
posted by juan olivero 19 Jan 2017Andrea
Forget to comment that I energized the K64F through the pins 4 and 6 of the J3 (P3V3). Is this advisable? Or it is best to do it through the J24 connector.
posted by juan olivero 19 Jan 2017Could you please send schematics to support@mbed.org so we can help further :)
posted by Andrea Corrado 20 Jan 2017Thanks for the help. Solve the problem with external source on pin16 (J3).
posted by juan olivero 24 Jan 2017