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SN75LVCP601: SATA 2 Mode work well, SATA 3 Mode not work

Part Number: SN75LVCP601

Hello,

I have a some problems with SATA Gen 3 support

In my system I use Kontron COMe module with 4x ports with SATA Gen 1/2/3 support

Port 0 and Port 1 use SN75LVCP601 redrivers and work well in SATA Gen 1/2 and not work in SATA 3 mode.

Port 2 and Port 3 have direct connection with SSD`s and work well for all speeds with standard SATA cables.

SN75LVCP601`s on ports 0 and 1 drive a backplane with special SSD carrier module connected with backplane.

Distance from SN75LVCP601 to COMe about 4 inches, and from SN75LVCP601 to SSD about 10 inches.

Could anyone recommend re-driver settings for my setup, please?

Default settings (EQ1,2 = 0 dB, DE1,2 = -4 dB,  DEW1,2 =1 LONG) work for GEN2 and not work for Gen 3.

-- Regards, Victor