LSISAS1068 LSI, LSISAS1068 Datasheet - Page 21

• Manufacturer Part Number: LSISAS1068
• Manufacturer: LSI

Specifications of LSISAS1068

• Lead Free Status / RoHS Status: Not Compliant

also reduces host processor overhead by providing a wide range of error
recovery implementations.
The LSISAS1068 supports up to a 133 MHz, 64-bit PCI-X bus and is
backwards compatible with previous versions of the PCI/PCI-X
specification. Per the PCI-X addendum, the LSISAS1068 includes
transaction information with all PCI-X transactions to enable more
efficient buffer management schemes. Each PCI-X transaction contains
a transaction sequence identifier (Tag), the identity of the initiator, and
the number of bytes in the sequence. The LSISAS1068 clocks PCI-X
data directly into and out of registers, which creates a more efficient data
path. The LSISAS1068 increases bus efficiency since it does not insert
wait states after the initial data phase when acting as a PCI-X target and
never inserts wait states when acting as a PCI-X initiator.
1.5
Benefits of GigaBlaze Transceivers
The GigaBlaze transceivers provide the physical layer for the
LSISAS1068 controller and are a proven component of LSI Logic
semiconductor expertise. The Gflx GigaBlaze transceivers are the fifth
generation of the LSI Logic GigaBlaze core. The GigaBlaze transceivers
provide full-duplex, point-to-point communications channels that can
operate at 3.0/1.5 Gbit/s SAS/SATA transfer rates.
The integrated GigaBlaze transceivers perform the 8b/10b conversion
that is necessary for SAS and SATA transfers, without burdening either
®
the LSISAS1068 ARM
processor or the host interface. The transmitter
accepts parallel data, serializes it, and transmits it on the differential
TX+/TX- signals. The receiver recovers the clock and deserializes the
data from the bitstream that it receives on the RX+/RX- signals. Because
the transceiver and receiver operate independently, the GigaBlaze
transceivers can send and receive data simultaneously, which maximizes
system performance. The GigaBlaze transceivers also provide integrated
internal termination.
Benefits of GigaBlaze Transceivers
1-7
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