Intel 925 Data Sheet - Page 22
Intel, 82925X/82925XE MCH Signal Interface Diagram, Signal Description, Intel
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Signal Description R Figure 2-1. Intel® 82925X/82925XE MCH Signal Interface Diagram HA[31:3]# HD[63:0] HADS# HBNR# HBPRI# HDBSY# HDEFER# HDRDY# HEDRDY# HHIT# HHITM# HLOCK# HREQ[4:0]# HPCREQ# HTRDY# HRS[2:0]# HCPURST# HBREQ0# HDINV[3:0]# HADSTB[1:0]# HDSTBP[3:0]#, HDSTBN[3:0]# BSEL[2:0] HRCOMP HSCOMP HSW ING HVREF SCS_A[3:0]# SMA_A[13:0] SBS_A[2:0] SRAS_A# SCAS_A# SW E_A# SDQ_A[63:0] SDM_A[7:0] SCB_A[7:0] SDQS_A[8:0], SDQS_A[8:0]# SCKE_A[3:0] SCLK_A[5:0], SCLK_A[5:0]# SODT_A[3:0] SCS_B[3:0]# SMA_B[13:0] SBS_B_B[2:0] SRAS_B# SCAS_B# SW E_B# SDQ_B[63:0] SDM_B[7:0] SCB_B[7:0] SDQS_B[8:0], SDQS_B[8:0]# SCKE_B[3:0] SCLK_B[5:0], SCLK_B[5:0]# SODT_B[3:0] PCI Express x16 Graphics Port Processor System Bus Interface Clocks, Reset, and Misc. Direct Media Interface System Memory DDR2 Channel A System Memory DDR2 Channel B Voltage Reference, and Power System Memory DDR2 Ref./ Comp. EXP_RXN[15:0], EXP_RXP[15:0] EXP_TXN[15:0], EXP_TXP[15:0] EXP_COMPO EXP_COMPI EXP_SLR HCLKP, HCLKN GCLKP, GCLKN DREFCLKN, DREFCLKP RSTIN# PW ROK EXTTS# BSEL[2:0] MTYPE ICH_SYNC# DMI_RXP[3:0], DMI_RXN[3:0] DMI_TXP[3:0], DMI_TXN[3:0] VCC VTT VCC_EXP VCCSM VCC2 VCCA_EXPPLL VCCA_HPLL VCCA_SMPLL VSS SRCOMP[1:0] SOCOMP[1:0] SM_SLEW IN[1:0] SM_SLEW OUT[1:0] SMVREF[1:0] Note: 1. SCB_A[7:0] and SCB_B[7:0] are on the Intel® 82925X only. 2. SDQS_A8/SDQS_A8# and SDQS_B8/SDQS_B8# are on the Intel® 82925X only. Signal_Info 22 Intel® 82925X/82925XE MCH Datasheet