SiI3114 PCI to Serial ATA Controller
Data Sheet
Silicon Image, Inc.
Serial ATA SControl
Address Offset: 100H / 180H / 300H / 380H
Access Type: Read/Write
Reset Value: 0x0000_0010
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Reserved
PMP
Reserved
IPM
SPD
DET
This register is the SControl register as defined by the Serial ATA specification (section 10.1.3).
• Bit [31:20]: Reserved (R). This bit field is reserved and returns zeros on a read.
• Bit [19:16]: PMP - This field is the 4-bit value to be placed in the Port Multiplier Port field of all transmitted
FISes.
• Bit [15:12]: Reserved (R). This bit field is reserved (for the SPM field) and returns zeros on a read.
• Bit [11:08]: IPM – This field identifies the interface power management states that may be invoked via the
Serial ATA interface power management capabilities.
Value
0000
0001
0010
0011
others
Definition
No interface power management restrictions (Partial and Slumber modes enabled)
Transitions to the Partial power management state are disabled
Transitions to the Slumber power management state are disabled
Transitions to both the Partial and Slumber power management states are disabled
Reserved
• Bit [07:04]: SPD – This field identifies the highest allowed communication speed the interface is allowed to
negotiate.
Value
0000
Definition
No restrictions
0001
Limit to Generation 1 (1.5 Gbit/s) (default value)
Reserved
others
• Bit [03:00]: DET – This field controls host adapter device detection and interface initialization.
Value
0000
0001
0100
others
Action
No action
ATA Reset is generated until another value is written to the field
No action
Reserved, no action
© 2007 Silicon Image, Inc.
67
SiI-DS-0103-D
SILICONIMAGE [ Silicon image ]
