LAN Connection issue in LPC1768FBD100

[nikhilmishra]

Hii Team,

Nikhil This Side from Electrolab India Pvt Ltd.

We are issue facing in LAN Connection, We have manufacture the our PCB with Newly IC Received in Latest date code,  Now in all Board have same problem LAN not connected.

Meanwhile we have available 1 card which is manufacture in 2020,  The same program are working properly in old card..

So Kindly give us the Solution on urgent basis,,  All Production are stuck due to that issue.

If any other details are required please let me know.

[ZhangJennie]

Hi nikhilmishra 

There are several possibilities that cause the issue, please check following two points.
- LPC1768
Where did you purchase the part?
Please provide the silk print picture of both your current LPC1768 and 2020 manufactured part.

- PCB
Is the PCB manufactured in 2020 the same as the current one?
To identify if the problem is caused by PCB circuit or LPC1768, do LPC1768 A/B swap on old and new PCB. How is the LAN working?

Thanks,

Jun Zhang