NXP Semiconductors QorIQ LS1012A Reference Manual

27.3.29.3 DiagramBits 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16R ReservedWReset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0Bits 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0R Reserved IPM SPD DETWReset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 027.3.29.4 FieldsField Function31-12—Reserved11-8IPMInterface power managementThis bit indicates the current interface state. The settings not defined below are reserved.0000b - Device not present or communication not established0001b - Interface in active state0010b - Interface in partial power management state0110b - Interface in slumber power management state7-4SPDCurrent interface speedThis bit indicates the negotiated interface communication speed. The settings not defined below arereserved.0000b - Device not present or communication not established0001b - Generation 1 communication rate negotiated0010b - Generation 2 communication rate negotiated0011b - Generation 3 communication rate negotiated3-0DETDevice detectionThis bit indicates the interface device detection and PHY state. The means by which the implementationdetermines device presence may be vendor specific. However, device presence must always beindicated anytime a COMINIT signal is received. The settings not defined below are reserved.0000b - No device detected and PHY communication not established0001b - Device presence detected but PHY communication not established0011b - Device presence detected and PHY communication established0100b - PHY in offline mode as a result of the interface being disabled or running in a BISTloopback modeChapter 27 SATA 3.0QorIQ LS1012A Reference Manual, Rev. 1, 01/2018NXP Semiconductors 1561