876784 Intel, 876784 Datasheet - Page 524

• Manufacturer Part Number: 876784
• Manufacturer: Intel

Specifications of 876784

• Lead Free Status / RoHS Status: Compliant

12.3.1
Table 12-4. Generic Host Controller Register Address Map
12.3.1.1
524
AHCI Generic Host Control Registers (D31:F2)
CAP—Host Capabilities Register (D31:F2)
Address Offset: ABAR + 00h–03h
Default Value:
All bits in this register that are R/WO are reset only by PLTRST#.
0Ch–0Fh
10h–13h
ABAR +
08–0Bh
Offset
00–03
04–07
Bit
31
30
29
28
27
26
Mnemonic
Supports 64-bit Addressing (S64A) — RO. Indicates that the SATA controller
can access
64-bit data structures. The 32-bit upper bits of the port DMA Descriptor, the PRD
Base, and each PRD entry are read/write.
Supports Command Queue Acceleration (SCQA) — RO. Hardwired to 1 to
indicate that the SATA controller supports SATA command queuing via the DMA
Setup FIS. The Intel
auto-activate optimization through that FIS.
Supports SNotification Register (SSNTF): — RO. The ICH7 SATA Controller does
not support the SNotification register.
Supports Interlock Switch (SIS) — R/WO. Indicates whether the SATA
controller supports interlock switches on its ports for use in Hot-Plug operations.
This value is loaded by platform BIOS prior to OS initialization.
If this bit is set, BIOS must also map the SATAGP pins to the SATA controller
through GPIO space.
Supports Staggered Spin-up (SSS) — R/WO. Indicates whether the SATA
controller supports staggered spin-up on its ports, for use in balancing power
spikes. This value is loaded by platform BIOS prior to OS initialization.
0 = Staggered spin-up not supported.
1 = Staggered spin-up supported.
Supports Aggressive Link Power Management (SALP) — R/WO. Indicates
the SATA controller supports auto-generating link requests to the partial or
slumber states when there are no commands to process.
0 = Aggressive link power management not supported.
1 = Aggressive link power management supported.
GHC
CAP
VS
IS
PI
DE22FF03h (Desktop Only) Size:
DE12FF03h (Mobile Only)
Host Capabilities
Global ICH7 Control
Interrupt Status
Ports Implemented
AHCI Version
®
SATA Controller Registers (D31:F2) (Desktop and Mobile Only)
ICH7 handles DMA Setup FISes natively, and can handle
Register
Description
Attribute:
(Intel
(Mobile Only)
and ICH7DH
DE22FF03h
DE12FF03h
00000000h
00000000h
00000000h
00010100h
Intel
Default
R/WO, RO
32 bits
Only)
®
®
ICH7R
ICH7 Family Datasheet
R/WO, RO
R/WO, RO
R/WC, RO
Type
R/W
RO