Hi team.
We meet some issue using DP83826. Could you please help it?
The issue is below.
Now the processor can’t read IP from other the Ethernet nodes. And I think the link hasn’t established.
Could you please answer my questions as below?
1. 0x1 register is 0x7849, bit[2] is 0 which means Link not established.
Could you please confirm if it is the hardware issue? Or could also be software issue?
2. For LED0, I think when link is good, LED0 will be high, and when cable is removed, LED0 should be low, am I right?
But from test, I found LED0 is always high. Could you please analysis it?
3. I think the next step should be loopback test. Could you please give the guidance for this debug?
I think after setting registers, we should monitor MAC’s TX and RX signal using Oscilloscope to see the data is same, am I right? Could you please give more details?
4. Registers are attached, appreciate if you can find some useful information to orient the issue.
address 0x0 :0x3100
address 0x1 :0x7849
address 0x2 :0x2000
address 0x3 :0xa130
address 0x4 :0x181
address 0x5 :0x0
address 0x6 :0x4
address 0x7 :0x2001
address 0x8 :0x0
address 0x9 :0x0
address 0xa :0x100
address 0xb :0x0
address 0xc :0x0
address 0xd :0x0
address 0xe :0x0
address 0xf :0x0
address 0x10 :0x4002
address 0x11 :0x108
address 0x12 :0x0
address 0x13 :0x0
address 0x14 :0x0
address 0x15 :0x0
address 0x16 :0x100
address 0x17 :0x41
address 0x18 :0x400
address 0x19 :0x4001
address 0x1a :0x0
address 0x1b :0x7d
address 0x1c :0x5ee
address 0x1d :0x0
address 0x1e :0x102
address 0x1f :0x0