PCAT互换机の最近の动向.ppt

1、The new trend in PC/AT architecture,鈴木一郎 suzukinisoc.or.jp,Dec.11 1999,何問題,PCI bus (32bit/33MHz)帯域不足 Video:AGP bus 高速PCI ISA bus/device様制限 performance (16bit / 8MHz) user interface,PC99 System Design Guide (Microsoft/Intel:1998),el.co.jp/design/desguide/ Power management(ACPI / OnNow) M

2、ultimedia devices Legacy device free ISA slot / device搭載 周辺機器接続USB/CardBus推奨,Server I/O Solution,bus switch Profusion(crossbar sw. for 8cpu) PCI2.2maintenance phase NGIO(Intel) PCI-X(IBM,Compaq,HP 66-133MHz) Future I/O(I,C,H,Adaptec),Intel new chip set,i820(i810,i840) Accelerated Hub Architecture RD

3、RAM(1.6GB/sec/ch. max.4ch.=6.4GB/sec) Without PCI to ISA bridge (-LPC) Ultra ATA/66 AGP 4X mode,Accelerated Hub Architecture,MCH(Memory Control Hub North Bridge) ICH(I/O Control Hub South Bridge) FWH(Firmware Hub BIOS) w.RNG MTH(Memory Translator Hub :support for SDRAM) MRH(Memory Repeater Hub) LPC(

4、Low Pin Count / 4bit/33MHz serial bus ),New PentiumIII:Coppermine,256KB full speed on-die cache Klamath,Deschutes,Katmai(PII,III):512KB half speed backside cache Mendocino(Celeron):128KB full speed on-die cache 0.18 micron process (1.6-1.65V) Slot1 and new FC-PGA package(socket 370),AMD:Athlon,EV6 b

5、us (Alpha chip) Point to point architecture (vs. Shared bus architecture) 128KB(64+64KB) L1 cache 512KB backside cache (half speed) PC100 SDRAM,Video,AGP 4X mode Geometry acceleration (DirectX7) GeForce256/Quadro(nVIDIA),Savage2000(S3) Fahrenheit(Direct3D+OpenGL)？,I/O devices,Legacy ISA device Seria

6、l(RS232C) Parallel(IEEE1284) PS/2 SCSI ATA/ATAPI USB IEEE1394 PC Card,RS232C(EIA),電話回線通通信 115.2Kbps(1Mbps拡張仕様) RS422A(15Mbps),IEEE1284,社用 IEEE1284-1994標準化 拡張仕様 互換 150 K bps (以下双方向通信可能) ECP(Extended capabilities mode / MS,HP) 2 M bps 圧縮機能 EPP(Enhanced parallel port / Intel,Xircom) 8 M bps 7台接続可能,SCSI

7、(ANSI X3.131-1986),SCSI-1(8bit 5MB/sec) SCSI-2 Fast SCSI(8bit 10MB/sec) WIDE SCSI(16bit 10MB/sec) Fast-Wide(20MB/sec),SCSI,SCSI-3(Parallel SCSI) Ultra SCSI(Fast-20 20MB/sec) Ultra Wide SCSI(40MB/sec) Ultra2 SCSI (LVD採用) Ultra 40(Fast-40 40MB/sec) Ultra2 Wide(80MB/sec) Ultra3 SCSI Ultra 160(160MB/sec

8、),SCSI,SCSI-3(Serial SCSI) IEEE1394 Fiber Channel SSA(Serial Storage Architecture),ATA/ATAPI,IDE:1986年Compaq,WD規格化、1991年ANSIATA(AT attachment)標準化 ATAPI(ATA packet interface):SCSIATA上利用 ATA/ATAPI-4,ATA/ATAPI,転送方式 PIO転送(16.7MB/sec) DMA転送(16.7MB/sec) Ultra DMA(Quantum,Intel) Ultra DMA/33,Ultra DMA/66,U

9、ltra DMA/100,USB(Universal Serial Bus),Intel,Compaq,IBM,MS,Northern Telecom,NEC策定 USB forum標準化 4線(電源2,2) 電源供給可能 Plug & play,Hot plug in up /down stream,USB(Universal Serial Bus),必要 Intel chip set430HX/VX以降標準搭載 :tree(最大6階層) 最大長 5m 1.5Mbps12Mbps mode isochronous mode / bulk mode / interrupt mode USB2.

10、0 (vs. USB1.1),IEEE1394(i.LINK,FireWire),Apple,TI1987発表(後SONY,IBM参加) IEEE1394-1995標準化 6線(DS-Link 電源2,2,2) 電源供給 Plug & Play,Hot plug in 必必要(家電機器応用) node,leaf,branch 制御複雑実装困難,IEEE1394:枝葉,branch,branch,leaf,leaf,leaf,leaf,leaf,leaf,leaf,branch,child notify,parent notify,IEEE1394,:chain,star,tree 最大長:72

11、m S100(12.5MB/sec),S200(25MB/sec),S400(50MB/sec),(S800.1600,3200.) isochronous mode / asynchronous mode IP over IEEE1394 (/html.charters/ip1394-charter.html),IEEE1394,IEEE1394高額料 USB2.0(up to 360-480Mbps) Windows98SE(SBP-2,bluebook) 当分接続不可？ 違？(家電PC),PC Card,JEIDA4.0/PCMCIA2.0(1990) memory card JEIDA4.2/PCMCIA2.1(1993) I/O card,card service/socket