Datasheet
SATA Controller Registers (D31:F2)
366 Intel® Xeon® Processor D-1500 Product Family
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
8.4.2.11 PxSCTL — Port [5:0] Serial ATA Control Register (D31:F2)
Address Offset: Port 0: ABAR + 12Ch Attribute: R/W, RO
Port 1: ABAR + 1ACh
Port 2: ABAR + 22Ch (if port available; see Section 1.3)
Port 3: ABAR + 2ACh (if port available; see Section 1.3)
Port 4: ABAR + 32Ch
Port 5: ABAR + 3ACh
Default Value: 00000004h Size: 32 bits
This is a 32-bit read-write register by which software controls SATA capabilities. Writes
to the SControl register result in an action being taken by Intel® Xeon® Processor D-
1500 Product Family or the interface. Reads from the register return the last value
written to it.
11:8 Interface Power Management (IPM) — RO. Indicates the current interface state:
All other values reserved.
7:4 Current Interface Speed (SPD) — RO. Indicates the negotiated interface communication speed.
All other values reserved.
Intel® Xeon® Processor D-1500 Product Family supports Gen 1 communication rates (1.5 Gb/s),
Gen 2 rates (3.0 Gb/s) and Gen 3 rates (6.0 Gb/s)
3:0 Device Detection (DET) — RO. Indicates the interface device detection and Phy state:
All other values reserved.
Bit Description
Value Description
0h Device not present or communication not established
1h Interface in active state
2h Interface in PARTIAL power management state
6h Interface in SLUMBER power management state
Value Description
0h Device not present or communication not established
1h Generation 1 communication rate negotiated
2h Generation 2 communication rate negotiated
3h Generation 3 communication rate negotiated
Value Description
0h No device detected and Phy communication not established
1h Device presence detected but Phy communication not established
3h Device presence detected and Phy communication established
4h Phy in offline mode as a result of the interface being disabled or running in a
BIST loopback mode
Bit Description
31:20 Reserved
19:16 Port Multiplier Port (PMP) — R/W. This field is not used by AHCI
15:12 Select Power Management (SPM) — R/W. This field is not used by AHCI