PCI VS PCI-X

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PCI VS PCI-X
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PCI ?

• PCI ????????????????????????????
  ???????????????? ??? ?????????????????????????? ?
  ??????????????????????????????????????????????
  ?????????? ??????????????? PCI
  ????????????????? BUS ??????? ?

3
Performance

• PCI ???????????????? 32-bit ???????????????
  33MHz ??????? ?????????????????? ??? 132
  MB/??????
• PCI ??????????????????????????? 64-bit
  ??????????????? 66MHz ?????????????????????????
  ???????????????????????????? ??? PCI ???
  64-bit ?????????????????????????????????????????
  ???? 2 ???? ????????????????? 264 MB/??????

4
Expandability

• PCI ?????????? BUS ???????? ? ??????????????
  ????????????????? ????????????????????????????????
  BUS ????????????????????????????????????????????
  ??????? ?????? LANs , SCSI ???
  ????????????????????????????? ????????????????????
  ???? ISA BUS ???????????????? ???? PCI
  ????????????????????????????????????????? 3 - 5
  ???? ?????????????????????????????????????????????
  ??? mother board ??????????????? PCI
  ?????????????????? ?????????????? multimedia
  ,graphic , disk dirves ??? LAN cards

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PCI ???????????? ?

•   PCI ?????? Local Bus ??????????
  ????????????????? CPU Local Bus
  (processor/memory/cache subsystem) ??? standard
  expansion bus (ISA). PCI Bus ?????????????? CPU
  local bus ??? PCI bridge/controller
• CPU ?????????????????????????? PCI
  ???????????????? ???? Harddisk , ??? PCI bridge
  / controller ??????????????????????????????????
  ??????. CPU ???????????????? ?????????????????????
  ???????????????????????????. ?????????????????????
  ???????????????? ?????????????????????????????????
  ????? ?????????????? PCI ???????? busmasters ???
  intelligent devices ?????????????? system bus,
  ??????????????? ????????????????????????? CPU
  
• CPU ??????????????????? busmaster
  peripherals. ??? CPU ??????????????????????????
  ????? PCI peripheral ????? ???????? ????????
  ????????????????? ????????????????????????

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• ????????
• ???????????????????????????? ???????????
  132MB ??? ??????. ??????????????????????????????
  ????????????????????? ????????????????????????????
  ???? ???????????????????????????

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PCI-X ???????????????????????????????????

• PCI-X ????????????
  ????????????????? ??????????
  ?????????????????????????? I/O
  ????????????????? Server ??? Workstation

????????????????? PCI-X ?????????????
??????????? 2 ??? PCI Bus ??? Network Card
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??????????? PCI-X ??????????????

• PCI Bus ???????????????? PCI-X ????
  ???????????????????? ?????????????????????????
  ?????? Server ??? Workstation ???????
  Application ????????????????????????????????????
  ??????? 266 MB/s ???? ???? PCI Bus
  ???????????????????????????????????????? 512
  MB/s ??????????????????????????????????????
  Application ????????

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??????????? PCI-X ?????????????? (???)

• ?????????? Server
  ????????????????????????????????????????? FC
  ( Fibre Channel ) Port ?????? Bandwidth
  ???????????????? 1 Gbps ??????? SCSI Port ???
  Ethernet Network Card ???????????????????
  100 Mbps ???????? PCI ??????????????????????????
  ?? ??????? PCI-X ??????????????
  ?????????????????????????????????
  ???????????????????????????????? ???????????
  1 Gbps ????????????????????????????????????????
  PCI-X ??? 133 MHz ????????????? PCI
  ????????????????????????? 33 ??? 66 MHz
  ????????
• ????????? ???????? PCI Slot
  ?????????????????? 66 MHz ????????????????????????
  ?????????????????? Slot ????????
  ???????????????? ????????????????????????????
  ?????? PCI-X ???? ??????????? 66 MHz ????????????
  PCI Bus ????????????????? Slot ????????? 4 Slot
  ???? ???????

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PCI-X ????????

• ?????????????????????? PCI-X ???????????? 2
  ????????????
• 1. ???????????????????????? PCI ???????
  ??????????? Hardware ??? Software ???????????
  PCI -X ????????????? Interface Card ??? PCI
  ???????????? PCI-X ??? ?????????????????????????
  PCI-X ????????????????????????????????? PCI
  ????????
• 2. ????? Bandwidth ????????????????????
  ???????????????? 512 Mbps ??????????????????
  PCI ???? ??? PCI-X ?????????????? 133 MHz ????
  Bandwidth ???? 1 Gbps

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• ??????? PCI-X ?????????????? 33 MHz ??????? 133
  MHz ?????? PCI-X ?????????????????????????????????
  ??????? ???????????????????????? Compatible ???
  PCI ????
• ?????????????? PCI-X ???????? 133 MHz
  ??????????????? PCI-X Slot ???????? 1 Slot ??????
  PCI-X ???????? 100 MHz ??????????????????????? 2
  Slot ???? ??????????? 66 MHz ???????????????
  PCI-X ????????? 4 Slot
• ???? PCI-X ???????????????????????????????????????
  ??? ??????????? ??????????????????????????????
  ???????? Wait State ??????????????????????????????
  ?????? ?????????? PCI-X ????????? Initiator ???
  Target (????????????????????? PCI) ????????????
  Wait State ???????????????????????????????????
  ????????????????????????? Target ?????????????
  Wait State ??????????????????????????
  ????????????? ?????????????????????
  ????????????????? Wait State ????????????????
  ????????????????????????? Wait State ???????
  ???????????????????????? PCI-X ???????????????
  ??????????????????? Buffer ??????? (????????? PCI
  )
• ????????? ???? PCI-X ???????????????????
  Bandwidth ???????????????????? ?????????????
  ??????? Burst (??????????????????????????????????)
  ??????????? ?????????????????????????????????????
  ????????? Target ??? Initiator ???????????????????
  ????????????????????

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• PCI-X backward compatible ???????????
  ????????????????????? PCI-X card ?? slot PCI
  ?????????? ?????????????????????????? PCI ???
  speed 33 MHz
• ???? PCI ??? PCI-X card ?????????????????????????
  ?????????????????? run ?????????????? card
  ???????????????

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???????????????? I/O ?????
????????????????????????? PCI-X

• ?????? 2 ??? ???????????????????????
  ????? ???? PCI ???????? Latches ?????? Output
  ?????? Input ?????? ??????? PCI-X ?? Latches
  ??????????????????? input ??? Output
  ??????????? ??????????????????????????????????????
  ???????? ???????? Wait State ??
• ?????????? PCI-X ??????????????
  ?????? ??????????????????? Configure
  ?????????? PCI-X ???????????? PCI-X Mode
  ?????????????????? PCI Mode ?????

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????????????? PCI-X

• PCI-X ????????????????????? Server
  ????????????????????????????????????? PCI-X
  ???????????????????????? ??????? PCI
  ????????????????????? ????????????????
  Compatible ?????????? PCI ????????
  ????????????????????????????????????? PCI ??????
  PCI-X ?????????????????? ?????????????????????????
  ?????????

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Clean Forward Migration from PCI to PCI-X
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System flexibility.
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Summary
Standard Bus Width Clock Transfer
PCI 2.3 32 Bit 33 MHz66 MHz 133 MB/s266 MB/s
PCI 64 64 Bit 33 MHz66 MHz 266 MB/s533 MB/s
PCI-X 1.0 64 Bit 66 MHz100 MHz133 MHz 533 MB/s800 MB/s1066 MB/s
PCI-X 2.0 (DDR) 64 Bit 133 MHz 2132 MB/s
PCI-X 2.0 (QDR) 64 Bit 133 MHz 4264 MB/s
PCI Express 1 Lines, 8 Bit 2.5 GHz 512 MB/s
PCI Express 2 Lines, 8 Bit 2.5 GHz 1 GB/s (Duplex)
PCI Express 4 Lines, 8 Bit 2.5 GHz 2 GB/s (Duplex)
PCI Express 8 Lines, 8 Bit 2.5 GHz 4 GB/s (Duplex)
PCI Express 16 Lines, 8 Bit 2.5 GHz 8 GB/s (Duplex)
PCI Express 32 Lanes, 8 Bit 2.5 GHz 16 GB/s (Duplex)
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