LSISAS1068 LSI, LSISAS1068 Datasheet - Page 33

• Manufacturer Part Number: LSISAS1068
• Manufacturer: LSI

Specifications of LSISAS1068

• Lead Free Status / RoHS Status: Not Compliant

2.1.2.2
2.1.2.3
2.1.2.4
2.1.2.5
2.1.2.6
Queue Manager
SATA Engine
Port Layer Connection Manager and Switch
SAS Link and Phy
Quad Port DMA Arbiter
contains four instances of the transport module, one for each SAS/SATA
phy on the LSISAS1068.
The queue manager is responsible for managing various queue
structures that support the SSP, SMP, and 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 monitor and switch manages 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 LSISAS1068 uses the Gflx GigaBlaze transceivers to implement the
SAS link. The SAS link layer manages SAS connections between initiator
and target ports, data clocking, and CRC checking on received data. The
SAS link is also responsible for starting a link reset sequence.
The SAS phys interface to the physical layer, perform serial-to-parallel
conversion of received data and parallel-to-serial conversion of transmit
data, manage phy reset sequences, and perform 8b/10b encoding.
The quad port arbiter interfaces with the host interface DMA arbiter and
determines bus priority between each of the four ports for DMA transfers.
Block Diagram Description
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