82801FB Datasheet, PDF (473/786 Pages) Intel Corporation – Intel I/O Controller Hub 6 (ICH6) Family

SATA Controller Registers (D31:F2)
12.1.30 PCS—Port Control and Status Register (SATA–D31:F2)
Address Offset: 92h–93h
Default Value: 0000h
Attribute:
Size:
R/W, R/WC, RO
16 bits
This register is only used in systems that do not support AHCI. In AHCI enabled systems, bits[3:0]
must always be set (ICH6R only) / bits[2,0] must always be set (ICH6-M only), and the status of
the port is controlled through AHCI memory space.
Bits
Description
15:8 Reserved.
Port 3 Present (P3P) — RO. The status of this bit may change at any time. This bit is cleared when
7
the port is disabled via P3E. This bit is not cleared upon surprise removal of a device.
(Desktop
Only) ^{0 = No device detected.}
1 = The presence of a device on Port 3 has been detected.
7
(Mobile Reserved
Only)
Port 2 Present (P2P) — RO. The status of this bit may change at any time. This bit is cleared when
the port is disabled via P2E. This bit is not cleared upon surprise removal of a device.
6
0 = No device detected.
1 = The presence of a device on Port 2 has been detected.
Port 1 Present (P1P) — RO. The status of this bit may change at any time. This bit is cleared when
5
the port is disabled via P1E. This bit is not cleared upon surprise removal of a device.
(Desktop
Only) ^{0 = No device detected.}
1 = The presence of a device on Port 1 has been detected.
5
(Mobile Reserved
Only)
Port 0 Present (P0P) — RO. The status of this bit may change at any time. This bit is cleared when
the port is disabled via P0E. This bit is not cleared upon surprise removal of a device.
4
0 = No device detected.
1 = The presence of a device on Port 0 has been detected.
Port 3 Enabled (P3E) — R/W.
3
0 = Disabled. The port is in the ‘off’ state and cannot detect any devices.
(Desktop _{1 = Enabled. The port can transition between the on, partial, and slumber states and can detect}
Only)
devices.
NOTE: This bit takes precedence over P3CMD.SUD (offset ABAR+298h:bit 1)
3
(Mobile Reserved
Only)
Port 2 Enabled (P2E) — R/W.
0 = Disabled. The port is in the ‘off’ state and cannot detect any devices.
2
1 = Enabled. The port can transition between the on, partial, and slumber states and can detect
devices.
NOTE: This bit takes precedence over P2CMD.SUD (offset ABAR+218h:bit 1)
Port 1 Enabled (P1E) — R/W.
1
0 = Disabled. The port is in the ‘off’ state and cannot detect any devices.
(Desktop _{1 = Enabled. The port can transition between the on, partial, and slumber states and can detect}
Only)
devices.
NOTE: This bit takes precedence over P1CMD.SUD (offset ABAR+198h:bit 1)
Intel^® I/O Controller Hub 6 (ICH6) Family Datasheet
473