LSI SAS 3801X Guia do Utilizador descarregar pdf (Página 19)

LSI Conﬁdential

PCI Performance 1-5

• Achieves a high bandwidth per pin with low overhead and low

latency

• PCI Express is software compatible with PCI and PCI-X software

– Leverages existing PCI device drivers

– Supports the memory, I/O, and conﬁguration address spaces

– Supports memory read/write transactions, I/O read/write

transactions, and conﬁguration read/write transactions

• Provides 4-KB of PCI conﬁguration address space per device

• Supports posted and non-posted transactions

• Provides quality of service (QOS) link conﬁguration and arbitration

policies

• Supports trafﬁc class 0 and class one virtual channel

• Supports message signaled interrupts (both MSI and MSI-X) as well

as INTx interrupt signaling for legacy PCI support

• Supports end-to-end CRC (ECRC) and advanced error reporting

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LSI SAS 3801X Guia do Utilizador Página 19