Datasheet

SATA Controller Registers (D31:F2)
326 Intel® Xeon® Processor D-1500 Product Family
Datasheet - Volume 1 of 4: Integrated Platform Controller Hub
March 2015
8.1.5 RID—Revision Identification Register (SATA—D31:F2)
Offset Address: 08h Attribute: RO
Default Value: See bit description Size: 8 bits
8.1.6 PI—Programming Interface Register (SATA–D31:F2)
8.1.6.1 When Sub Class Code Register (D31:F2:Offset 0Ah) = 01h
Address Offset: 09h Attribute: R/W, RO
Default Value: 8Ah Size: 8 bits
8.1.6.2 When Sub Class Code Register (D31:F2:Offset 0Ah) = 04h
Address Offset: 09h Attribute: RO
Default Value: 00h Size: 8 bits
5 66MHz Capable (66MHZ_CAP) — RO. Hardwired to 1.
4 Capabilities List (CAP_LIST) — RO. This bit indicates the presence of a capabilities list. The
minimum requirement for the capabilities list must be PCI power management for the SATA
controller.
3 Interrupt Status (INTS) — RO. Reflects the state of INTx# messages, IRQ14 or IRQ15.
0 = Interrupt is cleared (independent of the state of Interrupt Disable bit in the command register
[offset 04h]).
1 = Interrupt is to be asserted
2:0 Reserved
Bit Description
Bit Description
7:0 Revision ID — RO. This field indicates the device specific revision identifier.
Bit Description
7 Reserved. This read-only bit is a 1 to indicate that Intel® Xeon® Processor D-1500 Product Family
supports bus master operation
6:4 Reserved. Will always return 0.
3 Secondary Mode Native Capable (SNC) — RO. Hardwired to ‘1’ to indicate secondary controller
supports both legacy and native modes.
2 Secondary Mode Native Enable (SNE) — R/W.
Determines the mode that the secondary channel is operating in.
0 = Secondary controller operating in legacy (compatibility) mode
1 = Secondary controller operating in native PCI mode.
If this bit is set by software, then the PNE bit (bit 0 of this register) must also be set by software.
While in theory these bits can be programmed separately, such a configuration is not supported by
hardware.
1 Primary Mode Native Capable (PNC) — RO. Hardwired to ‘1’ to indicate primary controller
supports both legacy and native modes.
0 Primary Mode Native Enable (PNE) — R/W.
Determines the mode that the primary channel is operating in.
0 = Primary controller operating in legacy (compatibility) mode.
1 = Primary controller operating in native PCI mode.
If this bit is set by software, then the SNE bit (bit 2 of this register) must also be set by software
simultaneously.
Bit Description
7:0 Interface (IF) — RO.
When configured as RAID, this register becomes read only 0.