Intel C2518 FH8065501516710 Hoja De Datos
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FH8065501516710
Volume 2—SATA Controllers (SATA2, SATA3)—C2000 Product Family
Features
Intel
®
Atom™ Processor C2000 Product Family for Microserver
Datasheet, Vol. 2 of 3
September 2014
254
Order Number: 330061-002US
13.2.8
AHCI Operation
The SoC provides hardware support for the Advanced Host Controller Interface (AHCI),
a programming interface for SATA host controllers developed through a joint industry
effort. AHCI defines transactions between the SATA controller and the software and
enables advanced performance and usability with SATA. Platforms supporting AHCI
take advantage of performance features such as no master/slave designation for SATA
devices—each device is treated as a master—and hardware-assisted native command
queuing. AHCI requires the appropriate software support (such as, an AHCI driver) and
for some features, hardware support in the SATA device or additional platform
hardware.
The SoC supports all of the mandatory features of the Serial ATA Advanced Host
Controller Interface (AHCI) Revision 1.3 Specification and many optional features, such
as hardware-assisted native command queuing, aggressive power management, LED
indicator support, and Hot-Plug through the use of interlock switch support (additional
platform hardware and software are required depending upon the implementation).
Note:
For reliable device removal notification while in AHCI operation without the use of
interlock switches (surprise removal), interface power management is disabled for the
associated port. See Section 7.3.1 of the Serial ATA Advanced Host Controller Interface
(AHCI) Revision 1.3 Specification for more information.
13.2.9
External SATA
The SATA2 controller in SoC supports external SATA. External SATA utilizes the SATA
interface outside of the system box. The usage model for this feature must comply with
the Serial ATA II Cables and Connectors Volume 2 Gold Specification at
www.sata-io.org
. Intel validates two configurations:
1. The cable-up solution involves an internal SATA cable that connects to the SATA
motherboard connector and spans to a back panel PCI bracket with an eSATA
connector. A separate eSATA cable is required to connect an eSATA device.
2. The back-panel solution involves running a trace to the I/O back panel and
connecting a device using an external SATA connector on the board.