TLK10232 problem with MDIO

Hi.

We have our own bord with TLK10232 and Cyclone V. I try read TLK10232 registers by MDIO but TLK10232 doesn't answer.

I use PORTADR 0x10, DEVADR 0x1E (0x1), REGADR (0, 1, 2, 3, .....) but don't get answer from TLK10232.

TLK10232 configuration:

ST = '0';

GPIO = '0';

TESTEN = '0';

PHY_ADDR = 0x10.

Condition for all pins I verify with JTAG connection and TopJTAG Probe. All pins are in correct condition. I see signals on MDC/MDIO lines inside TLK10232 but I didn't see answer on MDIO line.

Thanks for any help.