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Part Number: TLK106
I connected the device (via RG45 transformer XFMATM9) to Laptop.
The LED_LINK pin is on but the Link Status bit of the Status Register is 0.
The content of Status Register is 0x7849.
I tried also with loop back cable. Same occurrence.
Can you please advise me?
EFL (Ethernet & FPD Link) Applications Engineer
In reply to Rob Rodrigues:
Thank you for your reaspond.
This is a custom board.
Attached please find the schematic diagram of TLK106.
I read the register 0x1 repeatly and receive the same result.
In reply to Yacob Hassidim9:
I replaced the R324 by 4.86 KOhm.
I didn't remove the C184 yet.
Unfortunately the link status bit is 0 (while the LED link is on).
The value of status register is 0x7849.
I removed the C184 also.
OK, that was the first thing I saw was an issue. I'd like you to check the following items.
1. Look at timing of input reference clock PHY_2_CLK. If PHY_2_CLK is not stable when the TLK106 power comes up, you may need to apply a RESET pulse to the TLK106 to initialize properly.
2. Measure RBIAS voltage during normal operation (should be approximately 1.2V)
3. Remove L37 and replace with 0 ohm resistor
4. Ensure PFBOUT is ~1.55V +/- 5%
5. Put the TLK106 in digital loopback mode and check for a link up in register 0x1
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