SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The 10-bit data parallelly transmitted data between SATA_PHY_TX and SATA controller link logic is sampled with respect to the TX_CLK. Frequency of this clock is obtained as the SATA_PHY.PLL_CLK clock frequency:
The actually negotiated between host and the attached SATA device speed is indicated in the read-only SATA controller.SATA_PxSSTS[7:4] SPD bit field. For more information, see Section 26.8.6, SATA Controller Register Manual, in Section 26.8, SATA Controller.
RX_CLK: The SATA_PHY_RX output RX_CLK is a clock that is recovered from the serial data received over the RXP/RXN lanes serial data. The RX_CLK clock supplies the SATA controller link parallel 10-bit data reception logic.