User manual AOPEN AX6B-HW

[. . . ] ĤG ww NH`Ǻi覡Apw˱ztΡAнT̷ӳoǨBJӦwˡC Фp: ESD (Electrostatic Discharge) Rqq NAѩnq (IC) ܮeRqP vTA]|ϷLBzAϺоAXRdΨ Lsˮ`CFwRqqӷla AпUCwIG 1. [. . . ] Ъ`NASDRAM M Registered SDRAM OVAzuw˦P@ DRAMC Pin1 Фp: DOä䴩 EDO DRAMC DIMM ҲեiѥHUXؤ覡ϤG I. j p : - 1Mx64 (8MB) B 2Mx64 (16MB) B 4Mx64 (32MB) B 8Mx64 (64MB)B16Mx64 (128MB)F- 1Mx64x2 (16MB)B2Mx64x2 (32MB)B 4Mx64x2 (64MB)B8Mx64x2 (128MB)C : -ӤkiHˬdz DIMM O-٬O - -- ݬDIMM W- pin 114 P pin 129ApG tmqAo DIMM iNO-F_hNO -CаѷӤU-ϸѡC 168 85 Pin 129 Pin 114 Ъ`N: -nF 1GB OeqAN 64M bit Registered SDRAMC 2-17 ww II. t: @OХܦp -12 oثAoܦst (clock cycle time) O 12nsAҥH SDRAM ̤j clock 83MHzC٦t@ؼХܬOpP -67 o ثAܦPBƶǿ̧֥i 67MHzC Фp: Y -10 SDRAM ib 100 MHz CPU ~WU٥iHB@AOF-wʵ۷QA - O ij z X PC 100 W SDRAMC III. Buffered P non-buffered: DO䴩 non-buffered DIMMCziH̾ DIMM W-ʤfmAӧPO non-buffered DIMM P buffered DIMMCа ӤUϩҥܡG non-buffered Reserved buffered ѩʤfmPAu non-buffered DIMM iHJDOW DIMM ѡCMثe-Wݨ쪺 DIMM wgO non-buffered FA-̤ ijzbʮɳ̦n٬O򩱮a߰ݲMC IV. 2-clock P 4-clock signals: M 2-clock M 4-clock DIMM iHΦbo DOWAFt-wʵ۷QA-̤ijz̦nϥ 4-clock SDRAMC : -nˬdz SDRAM O 2-clock ٬O 4-clock AiHݬ pin 79 P pin 163ApGtmqN ӬO 4-clockF_hKO 2-clock C V. P줸: 䴩зǪ 64 bit wide (L parity) P 72 bit wide ( parity) DIMMC BIOS i۰ʰO骺eqΫAݨϥ Jumper ]wC̤jOe qO 1GBC Total Memory Size = Size of DIMM1 + Size of DIMM2 + Size of DIMM3 + Size of DIMM4 2-18 ww HUCXijϥΪ DRAM զXG DIMM Data chip 1M by 16 1M by 16 2M by 8 2M by 8 C- bit ƥ 1Mx64 1Mx64 2Mx64 2Mx64 C- bit 2Mx64 2Mx64 4Mx64 4Mx64 8Mx64 8Mx64 - x1 x2 x1 x2 - x1 x2 x1 x2 x1 x2 Chip 4 8 8 16 Chip 2 4 4 8 8 16 DIMM j p 8MB 16MB 16MB 32MB DIMM j p 16MB 32MB 32MB 64MB 64MB 128MB O_ij Yes Yes Yes Yes O_ij Yes, but not tested. [. . . ] Yes, but not tested. DIMM Data chip 2M by 32 2M by 32 4M by 16 4M by 16 8M by 8 8M by 8 HUCXijϥΪ DRAM զXG DIMM Data chip 4M by 4 4M by 4 16M by 4 C- bit 4Mx64 4Mx64 16Mx64 - x1 x2 x1 Chip 16 32 16 DIMM j p 32MB 64MB 128MB O_ij No No No 2-19 ww b 100MHz ΥHW~WUA-nonįP-wʡA-̫ijz̦n PC 100 SDRAMAHUOثe AOpen չL PC 100 SDRAMC jp 16M 16M 16M 32M 32M 32M 32M 128M t Micron TI Hyundai Micron Hyndai NEC SEC Simens MT48LC2M8A1-08 TMX626812BDGE-10A HY57V168010CTC-10 MT48LC2M8A1-08 HY57V168010CTC-10 D4516821AG5-A10-7JF KM48S2020CT-GH HYS72V16220GU - x1 x1 x1 x2 x1 x1 x1 x2 Chip ƥ 8 8 8 16 16 16 16 18 DOOH parity check 覡O~Czϥ 72 bit DIMM (64 bit data + 8 bit parity) Ӥ䴩 parity checkABIOS i۰ʰ 72 bit parity DIMMA ݵw]wC 2-20 [. . . ]