Kontron KTQ45-FLEX - Manual (Page 33)

KTD-00782-I KTQ45 family Page 33 of 92
3.6 Serial ATA Hard Disk interface
The KTQ45 boards have an integrated SATA Host controller that supports independent DMA operation on
six ports and data transfer rates of up to 3.0Gb/s (300MB/s). The SATA controller supports AHCI mode and
has integrated RAID functionality with support for RAID modes 0, 1, 5 and 10 (Linux O/S only support for
RAID 0 and 1).
The board provides five Serial ATA (SATA) connectors which support one device per connector. The
ICH10DO Serial ATA controller offers six independent Serial ATA ports with a theoretical maximum transfer
rate of 3 Gbit/sec per port. One device can be installed on each port for a maximum of six Serial ATA
devices. A point-to-point interface is used for host to device connections, unlike Parallel ATA IDE which
supports a master/slave configuration and two devices per channel.
For compatibility, the underlying Serial ATA functionality is transparent to the operating system. The Serial
ATA controller can operate in both legacy and native modes. In legacy mode, standard IDE I/O and IRQ
resources are assigned (IRQ 14 and 15). In Native mode, standard PCI Conventional bus resource steering
is used. Native mode is the preferred mode for configurations using the Windows XP and Windows Vista
operating systems.
The KTQ45 supports the following RAID (Redundant Array of Independent Drives) levels:
• RAID 0 - data striping
• RAID 1 - data mirroring
• RAID 0+1 (or RAID 10) - data striping and mirroring
• RAID 5 - distributed parity
Limitations depending on Target Operating System apply.
Note: On the KTQ45 there is no parallel ATA or CF interface, but on the market it’s possible to find different
SATA converters to support CF etc.
In case CF card shall be used as hot plug device then it is recommended to use USB to CF adapter. (SATA
to CF adapter doesn’t support hot plug).
3.6.1 SATA Hard Disk Connector (SATA1, SATA2, SATA3, SATA4, SATA5)
SATA:
PIN Signal Type Ioh/Iol Pull
U/D
Note
1 GND PWR - -
2 SATA* TX+
3 SATA* TX-
4 GND PWR - -
5 SATA* RX-
6 SATA* RX+
7 GND PWR - -
The signals used for the primary Serial ATA hard disk interface are the following:
Signal Description
SATA* RX+
SATA* RX- Host transmitter differential signal pair
SATA* TX+
SATA* TX- Host receiver differential signal pair
“*” specifies 1, 2, 3, 4, 5 depending on SATA port.