LSISAS1068E LSI, LSISAS1068E Datasheet - Page 11

• Manufacturer Part Number: LSISAS1068E
• Manufacturer: LSI

Specifications of LSISAS1068E

• Lead Free Status / RoHS Status: Not Compliant

UART
Quad Port Modules
Transport Modules
Queue Manager
SATA Engine
Port Layer Connection Manager and Switch
SAS Link
DB08-000274-03
The UART provides test and debug access to the LSISAS1068E.
The Quad Port modules in the LSISAS1068E implement the SSP, SMP, and
STP/SATA protocols, and manage the SAS/SATA phys. There are two Quad
Port modules in the LSISAS1068E. Each Quad Port module supports four
phys. The following subsections describe the Quad Port modules.
The transport modules transmit frames to and from the port layer and
implement the STP, SSP, and SMP protocols. Each Quad Port module has
four instances of the transport module, one for each SAS/SATA phy on the
LSISAS1068E. The transport modules also manage DMA transfers.
The queue manager is responsible for managing various queue
structures that support the SSP, SMP, and SATA/STP protocols. The
queue structures are the primary means for the IOP to initiate I/Os to the
hardware, and for the hardware to notify the IOP of I/O status.
The SATA engine provides information to the transport modules to enable
handling of SATA commands. The SATA engine tracks queued commands
per device and provides these tags to the SATA transport layer blocks.
The port layer connection manager and switch handles transmission
requests from the transport modules and originates connection requests
to the SAS links. It is also responsible for handling SAS wide port
configurations.
The SAS link layer manages SAS connections between initiator and
target ports, data clocking, and CRC checking on transmitted data. The
SAS link is also responsible for starting a link reset sequence.
LSISAS1068E PCI Express to 8-Port Serial Attached SCSI Controller 11 of 30
October 2006 - Version 2.1
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