ADLINK cPCI-6870 - Manual (Page 33)

Functional Description 19
cPCI-6870
Intel® ICH9M-SFF Mobile I/O Controller Hub
The ICH9M-SFF provides extensive I/O support. Functions and
capabilities include:
X ACPI Power Management Logic Support
X Integrated Serial ATA host controllers with independent
DMA operation on up to four ports and AHCI support.
Z Supports data transfer rates of up to 3.0 Gb/s (300
MB/s).
Z The SATA controller contains two modes of operation – a
legacy mode using I/O space, and an AHCI* mode using
memory space. Software that uses legacy mode will not
have AHCI* capabilities.
X Provides 6 PCI Express x1 ports, supporting the PCI
Express Base Specification, Revision 1.1. Each Root Port
supports 2.5GB/s bandwidth in each direction (5 GB/s con-
current). The cPCI-6870 utilizes four PCI Express ports 3-6
for four Gigabit Ethernet controllers and configures the PCI
Express ports 1-2 to PCI-Express x2 for connecting PCI
Express to PCI bridge to support 64bit/66MHz CompactPCI
bus..
X Enhanced DMA controller, interrupt controller, and timer
functions
X System Management Bus (SMBus) Specification, Version
2.0 with additional support for I2C devices
X Supports Intel® High Definition Audio
X Supports Intel® Virtualization Technology for Directed I/O
X PCI Local Bus Specification, Revision 2.3 support for
33MHz PCI operations
* AHCI is a new programming interface for SATA host controllers. Plat-
forms supporting AHCI may 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 also provides usability enhancements such as
Hot-Plug. AHCI requires appropriate software support (e.g., an AHCI
driver) and for some features, hardware support in the SATA device or
additional platform hardware.