STM32H743ZIT6 can't Ping IP

[khanhcong861989]

Dear All!

I’m try to handle my Thesis project. With ETH block, when i download program to STM32H732Z nucleo kit, it can Pìn IP correctly. But when i download to my custom board, it fail to Pin IP, i compare schematic with STM32H732Z nucleo kit→ it same. right now i supplt 25Mhz from NB3L553DG( page 1, oscillator block),  reset Pin use deafault( just have 1 pull-up resistor). 2 indicator led( green, and yellow) still blink. On RJ45 connector: The orange led is on, the green led flashes at first then stays on.

I use oscilloscope to  check some signal:

1. signal REF_Clock to pin PA1: 50Mhz,

2. MDC SIgnal: 2.5Khz,

3. MDIO signal: 100~220Khz,

4. VDDCR=1.244V,

5. votage at pin 24 Rbias 1.248V, 

some can you share how to fix this issue. I tried many sample( FrerRTOS & non FreeRtos) already but stil can’t fix this issue.

[khanhcong861989]

i update picture of IP ping result, and clock supply for X1 of LAN8742A, REF_CLOCK to Pin PA1 of STM32H7

[TDK]

Did you debug the code at all? Where does it get stuck? Can you blink an LED?

 

Your schematic is significantly different from the NUCLEO-H723ZG. Take the VCAP connection, for example.

[khanhcong861989]

sorry i usse H743ZIT6( my typo).

 yes, i tried to debug already, program no stuck, and can blink 1 led in while(1), 1 led by timer interrupt . and i use reference schematic also. 

[khanhcong861989]

i update: read PHY → OK, ID=0, read PHY status→ OK as Picture. but still can’t Ping IP