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Polarity Swap of TLK110

Other Parts Discussed in Thread: TLK110

Hi

Customer is using TLK110.
Customer told me that Polarity is inverted.
But the "SWSCR3(0x000B) - Polarity Swap(b6)" setting is "Normal polarity(0)".

Customer board has two TLK110 and two LAN port.
Those is same circuit.

They connected two LAN port by a cross cable.
They checked PHYSTS(0x0010) in the state of link.
Then, PHYSTS(0x0010) is "Inverted Polarity detected(1)".
The setting at that time is "Auto-Negotiation Disable、10Mbps、Full-Duplex、Auto MDI-X Disable"

Please tell me the cause of this issue.

Thanks,
Shimizu