Questions tagged [network-interface]
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78 questions
0 votes
0 answers
515 views
custom W5500 + RJ45 (HR911105A) – Link/ACT LEDs not lighting up, even though SPI works
I'm using an ESP32-S3 with MicroPython and a custom W5500 Ethernet module connected via SPI. I can successfully communicate with the W5500 — reading the version register returns 0x04, so SPI works ...
- 11
2 votes
2 answers
366 views
What's the difference between long and short (physical shape) type of RJ45 connector of the same specifications?
I have two RJ45 PNs (with builtin magnetics) of different lengths but with same specifications. I have compared both datasheets but was not able to find any specific difference except the length. ...
- 21
1 vote
1 answer
344 views
Connecting two W5500 via UDP results in PHY link off
I want to connect two STM32F4 and to communicate via UDP. At the moment I only want to send data from one to another mcu. I have tested tx and rx communication separately with PC - python scripts and ...
- 109
0 votes
1 answer
264 views
Can M-LVDS be used as bus protocol?
https://www.analog.com/media/en/technical-documentation/application-notes/AN-1177.pdf In the document, it states that CAN is robust but M-LVDS is low power alternative of that. However, I couldn't be ...
- 457
0 votes
1 answer
462 views
How Nic process packets
As packet arrives Nic detect it on its interface like wire/air and than packet is kept in Rx FIFO the on chip memory for further processing like offloading and determining it belong to it after ...
0 votes
2 answers
216 views
Interfacing RJ45 to 3 pin RMII and bidirectionality
I am trying to add an Ethernet interface to a dev board (This board specifically). From looking at the schematics, I see that it has a 3 pin PHY input (GND, TRX+, and TRX-). From my understanding, a ...
- 111
0 votes
0 answers
518 views
QSFP-DD to 8x 10G SFP+
I am trying to use a QSFP-DD port on an FPGA to breakout and interface with 4 or 8 SFP+ ports. I am curious if this is possible. From my research online, it seems like this all depends on the module ...
- 111
1 vote
1 answer
1k views
W5500 network configuration issues
I have used W5500 hardware for my gateway device. It has been implemented in 80-100 locations. But in 4-5 locations I'm getting an unusual issue related to the network connection. The ethernet mode is ...
