My device with W5500 does not bring physical link with some routers. It turns on yellow LED (LINKLED) for at about 1.5 seconds, then, at the moment of turning it off, turns on green LED (ACTLED) for 0.5s. After it no LED’s activity during 2-3 seconds, and cycle starts again. The situation with different devices:
- Tp-Link router: connect immidiately
- Direct to PC (symmetric cable): connect after 0-4 cycles
- Zyxel Keenetic Omny, another unknown router: infinite cycle, no connect. In 1 way out of 20 connects immidiately.
Sometimes connection to Zyxel can be estabilished after plugging the cable after 10-20s of device start. I use standart schematics (see attach), inductance is 33uH. Zyxel router works stable with PC’s.
Do you know, what W5500 “is doing” at that time and why doesn`t connect?