Intel J1850 FH8065301455200 User Manual

134

Datasheet

The processor has one integrated SATA host controller that supports independent DMA 
operation on up to 2 ports and supports data transfer rates of 1.5 Gb/s (150 MB/s) and 
3.0 Gb/s (300 MB/s). 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.

The processor supports the Serial ATA Specification, Revision 2.6. The processor also 
supports several optional sections of the SATA Revision 2.0 Specifications: Extensions 
to Serial ATA 1.0 Specification, Revision 1.0 (AHCI support is required for some 
elements).

The SATA controllers feature two sets of interface signals (ports) that can be 
independently enabled or disabled (they cannot be tri-stated or driven low). Each 
interface is supported by an independent DMA controller.

The SATA controllers interact with an attached mass storage device through a register 
interface that is equivalent to that presented by a traditional IDE host adapter. The host 
software follows existing standards and conventions when accessing the register 
interface and follows standard command protocol conventions.

SATA interface transfer rates are independent of UDMA mode settings. SATA interface 
transfer rates will operate at the bus’s maximum speed, regardless of the UDMA mode 
reported by the SATA device or the system BIOS.

See 

 for additional details.

The signal description table has the following headings:

•

Signal Name: The name of the signal/pin

•

Direction: The buffer direction can be either input, output, or I/O (bidirectional)

•

Type: The buffer type found in 

•

Description: A brief explanation of the signal’s function

SATA

IO    2