82801FB Datasheet, PDF (501/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

SATA Controller Registers (D31:F2)
12.3.2.10 PxSSTS—Port [3:0] Serial ATA Status Register (D31:F2)
Address Offset:
Default Value:
Port 0: ABAR + 128h
Attribute:
Port 1: ABAR + 1A8h (Desktop Only)
Port 2: ABAR + 228h
Port 3: ABAR + 2A8h (Desktop Only)
00000000h
Size:
RO
32 bits
This is a 32-bit register that conveys the current state of the interface and host. The ICH6 updates it
continuously and asynchronously. When the ICH6 transmits a COMRESET to the device, this
register is updated to its reset values.
Bit
Description
31:12
11:8
7:4
Reserved
Interface Power Management (IPM) — RO. This field 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.
Current Interface Speed (SPD) — RO. This field indicates the negotiated interface communication
speed.
Value
Description
0h
Device not present or communication not established
1h
Generation 1 communication rate negotiated
All other values reserved.
ICH6 Supports only Generation 1 communication rates (1.5 Gb/sec).
Device Detection (DET) — RO. This field indicates the interface device detection and Phy state:
Value
Description
0h
No device detected and Phy communication not established
3:0
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
All other values reserved.
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
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