82NM10 Datasheet, PDF (513/671 Pages) Intel Corporation – Intel® NM10 Family Express Chipset

SATA Controller Registers (D31:F2)
Bit
Description
11:8 Interface Power Management (IPM) — RO. Indicates the current interface state:
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
All other values reserved.
7:4 Current Interface Speed (SPD) — RO. Indicates the negotiated interface communication
speed.
Value
Description
0h
Device not present or communication not established
1h
Generation 1 communication rate negotiated
2h
Generation 2 communication rate negotiated
All other values reserved.
Chipset supports Generation 1 communication rates (1.5 Gb/sec) and Gen 2 rates (3.0
Gb/s).
3:0 Device Detection (DET) — RO. Indicates the interface device detection and Phy
state:
Value
0h
1h
3h
4h
Description
No device detected and Phy communication not established
Device presence detected but Phy communication not established
Device presence detected and Phy communication established
Phy in offline mode as a result of the interface being disabled or
running in a BIST loopback mode
All other values reserved.
15.3.2.11 PxSCTL — Port [1:0] Serial ATA Control Register (D31:F2)
Address Offset: Port 0: ABAR + 12Ch
Port 1: ABAR + 1ACh
Attribute:
R/W, RO
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 the Chipset or the interface.
Reads from the register return the last value written to it.
Bit
Description
31:20 Reserved
19:16 Port Multiplier Port (PMP) — RO. This field is not used by AHCI
NOTE: Port Multiplier not supported by Chipset.
15:12 Select Power Management (SPM) — RO. This field is not used by AHCI
Datasheet
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