We are debugging the circuit board equipped with RT1061CVL5A. The second network port has not been able to communicate. We have a RT1064DVL6A development board on hand. Both network ports can communicate. What‘s the difference between the two chips？’See the attachment for related circuits;
1. The first network port can communicate, but when two network ports are initialized at the same time, the first network cannot communicate either;
2. The second network port light, speed light and link light are normal, but the ping fails;
3. When the second network port is connected to the network cable, use an oscilloscope to measure, txclk has a 50M clock, MDC frequency is 2.4M, TXEN, TXD0, and TXD1 are always low. Disconnect these 3 wires and the Mac is still Low level
4. Disconnect R86, R87, R88, and connect the three signal wires TXEN, TXD0, TXD1 to GPIO_EMC_30, 31, 32, the phenomenon is still the same;
I would like to ask, have any other customers encountered such a problem, or is there a solution?
Hi xu hao,
About the RT1060 two ethernet interface, one of our 3rd part company have designed one board OK1061, this is the related circuit:
You can check the circuit, whether some difference with your board or not?
As I know this board both two ethernet interfaces can work.