I have made a custom S32K344 Board. Whose Schematic's is this one: S32K344 Evaluation Board (2).pdf
On Page 8: is the schematic diagram of Ethernet part using TJA1103 Ethernet Transceiver IC.
In software, i am using lwip_baremetal_S32k344 example provided by NXP.
But my code is stuck at particular this part:
Though this code work's perfectly fine with the S32K3X4EVB-T172 Evaluation Board for Automotive General Purpose | NXP Semiconductors But, it doesnt seam to work with our hardware. Whose schematic have share above.
Can one suggest??? In our board, we have made the schematic's for ethernet section, exactly identical with Original S32K3X4-EVB 172.
Just changes of some Ethernet Pin's.
As according to code, it is waiting to establish the link. Does it because ethernet IC is not wake UP? Like do we have to configure TJA1103 with some pin's high/low. As in our custom hardware, we have made ethernet transceiver circuit exactly identical and same with original NXP S32K3x4 EVB Board.
Also one more observation i found.
As suggested of reading BASE_T1_PMA_Control Register of MMD 1
In Custom S32K3x4 Board, It return's with 0x8000. Which mean's TJA1103 is in Slave Mode.
I guess, that might be the reason??
How should i configure board in Master Board??
I saw a note, stating:
So is it possible, that in custom board TJA1103 is in deep sleep mode?? If yes then how can i wake it up!?
In short:
1) I guess TJA1103 is configured in slave mode. So how to configure it in Master Mode?
2) I guess TJA1103 is in deep sleep mode, so how can i check that whether Phy is in deep sleep mode or awake?
These are my assumption's and understanding, let me know if their can be any other concerning way's.
Hi, I did check all pin strapping configurations at hardware level.
All marked in yellow, are the one's which is they're in both boards. And the once in Red is difference.
So Phy addr, coming out to be 2 now make's sense because in our board Config 2 is Pull down. Whereas in NXP Original Board it is Pull UP.
I check the reset signal's as well; it is Pull Up in both of the hardware.
But still on reading 0x810C register of MMD 30 it gives 0x00 value.
Register description of 0x810C is:
Meaning that PHY is not operational and it is disabled from transmit/basic state.
What can be possible, reasons for that, if software is exactly same and hardware configuration as well apart from just Phy addr and some Ethernet pin change's.!???
As I read on the datasheet, i found that PHY report's disabled if it is in PMA test mode or diagnostic state.
How to check this and make Phy come out of diagnostic or test state!?
Will be expecting a quick reply, please!!!!
Reading ALWAYS_ACCESSIBLE register, give's value of : 0x27
and reading PMA_CONTROL1, give's reset value of: 0x2000
On reading this bit's and register description. What i can assume, PHY is powered correctly and not in sleep mode. As first 3 bits of ALWAYS_ACCESSIBLE register, indicate whether Phy is getting correct power and it is not in sleep mode. But Phy register's are not writable. I didn't get, is it some INT pin configuration related of Phy
And on reading PMA_CONTROL register's it return's reset value of 0x2000. And i guess something is wierd or wrong in this as speed select is selected of 10Mbit according to this register read. But it is written 10Mbit's is not supported.
Any comment's on these??
I did check Reset and supplie's Phy is properly getting voltage of 3.3. And Clock signal's how should i check?? via probing to oscilliscope??
I guess Clock signal also must be working correct, as i am able to read and write Phy register's properly!?
Well i put your code.
Using that, Phy is set to Master Mode as on reading 0x834 register it now return's 0xC000. Which means TJA1103 Phy is in master mode.
But Still, linking doesnt happen.
As on reading 0x810C: Phy State value it still give's 0x00. That is transmit and basic state are not active.
Could change of Phy address, as stated in my last comment. Can be any issue or point of major concern??
Any other register, you can state which i can check. Any register that tell's about sleep mode/wake mode of PHY after Master mode setting.
Else i will check signal's on pin strapping via multimeter and debug are their configuration's correct.
I read 0x810C Register, and it is returning 0 value for it.
On working mode, reading this read's gives 3085. Which mean's that transmit state and basic state are active.
But in other board, reading 0x810C gives 0, means both transmit and basis state are disabled. So does it mean, that TJA1103 is not powered or it is fake one?? or some thing's needs to be done at hardware end??
And i found one thing to observer, the same software code is able to detect Phy TJA1103 IC, in the case of custom board at Phy addr 2. Whearas in Original Board it detect TJA1103 IC at Phy addr of 1.
Can this mean something?? with respect to configurationally??
