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DCBA2124KBC will issue aanalog ( a voltagelevel ) signal.SW: FAN_DA1 mustbe low during S3+VCORE12FAN0_DA1S_DEL+VCORE12GND121212+CE10220UF/2VC8010uF/10VC42810uF/10V+VCORE1C41910uF/10Vc0805C13410uF/10V1212GND5GND+3VSGNDC11010uF/10V5+3VS+V5S_FANOVERT#<strong>CPU</strong> VCORE Decoupling Capacitor1212C9610uF/10V+ C840.01UF12121RN5A10KOhm23DR146 R14510KOhm 15KOhmr0402 1%11 Q29 /G 2N70022S/GND GND2121212R140 1%1 24.7KOhm32C7850.1UFc0402+CE9220UF/2VC13110uF/10Vc0805C43810uF/10VC10210uF/10Vc080512121 2211C8110uF/10Vc0805C9710uF/10V2121 2OS#_OCRN5B 10KOhm3 4RN5D 10KOhm7 8C43710uF/10Vc0805C11510uF/10VC42610uF/10V1212121C43110uF/10Vc08052C8310uF/10Vc0805C13310uF/10VC43910uF/10VC9410uF/10Vc0805121212124Using a OP AMP andfine-tuning the level,we can improve the fanspeed accuracy.GNDC203 1 2 1000PFc0402+12VC10910uF/10Vc0805C42710uF/10VC8210uF/10V+ C850.01UFU153 A++ VCC 812 A--AO5 B++ BO 76 B--GND 4U681 A2 B3 GNDVCCY54NC7SZ08P5X12121212LM358MXC41810uF/10Vc0805C42010uF/10VC44910uF/10V41212121C11210uF/10Vc08052GND+3VSC13210uF/10VC41510uF/10VC43610uF/10V+5VSGNDR147 1 2 330OhmP/N change to06-010112010for cost down1212121C41310uF/10Vc08052C10110uF/10VC11410uF/10VC42910uF/10V1212121C41610uF/10Vc080525C11610uF/10VC11110uF/10VC43010uF/10VC11310uF/10Vc080512GNDC4750.1UFc0402+3VS5634GND32Fan Speed ControlS2Q106SI2301DS2 3RN5C10KOhm21161Q27BUM6K1NGDGND3Mid FrequencyDecoupling (PlacearoundProcessor)High FrequencyDecoupling (PlaceunderneathProcessor) using10uF/6.3V X5R+VCOREBulkDecoupling312GNDFANSP1Q27AUM6K1NR1.1+V5S_FAN1 2+ CE2647UF/6.3VGNDR8301 222KOhm21 THRM_<strong>CPU</strong>#D521N4148W-A21 B+3VS+3VS12GNDR1.021 SMB1_CLK21SMB1_DATR82010KOhmr04023CQ28PMBS3904E2+3VA12R472200Ohm1 21%r0402R1.0R79510KOhmr0402Four 200 uF arelocated inIMVP4D 3 2+V3.3S_THM Standby Mode: 3uA(Max. 10uA)Full Active: 0.5 mA(Max. 1mA)+V3.3S_THMGNDSCL_3SSDA_3STHRM_AL#+5VS11G3 2SQ147 2N700212FAN0_TACH 21C4630.1UFc0402Close to Pin A18& B18 of <strong>CPU</strong>2876U38+3VS12U6 output maximum will be 10.5V (VCC-1.5V) which willdamage sourth bridge. Add a MOS to tansfer it to +3Vlevel.R70110KOhmr04021VCCSMBCLK OVERTSMBDATA DXPALERT# DXNGND5GNDTHRM_AL#423MAX6657CustomFANSP1124"-8"C4582200PF/50Vc0402H_THERMDC 4"-8"ASUSTeK COMPUTER INCDate: Tuesday, August 09, 2005Sheet 5 of 5311<strong>CPU</strong> FANRoute H_THERMDA and H_THERMDCon the same layer------------------OTHER SIGNALS12 mils===============GND10 mils=========H_THERMDA(10 mils)10 mils=========H_THERMDC(10 mils)10 mils=========GND12 mils---------------------OTHER SIGNALSOVERT#C199100PFc0402H_THERMDAAvoid BPSB,PowerPin 13 Pin 14 SMB Addr1 X 5C **0 1 5A0 0 58A3H+V5S_FANGND GND GND12123GNDHOLD1CON14WTOB_CON_3PHOLD2Title : THER-SENSOR,FANEngineer: Howard TuSize Project Name Rev45<strong>CPU</strong>_THRM_DA 3<strong>CPU</strong>_THRM_DC 32.0DCBA
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