KSZ9897S and MMD registers (SPI interface)
I'm working with KSZ9897S chip using SPI interface.
Reading and write global registers is fine, reading and write SGMII registers (indirect) is fine too.
But I'm have a trouble with MMD (indirect) registers.
I set the PHY MMD Setup Register (as on p.166 of datasheet, Device Address 7h, Reg. 3Ch ) and PHY MMD Data Register (Reg. 3Ch). Then i try read PHY MMD Data Register, hoping reicive value 0x0006 from MMD register 3Ch, but I receiv 3Ch...
What I'm doing wrong?