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LPC47M172 Datasheet(PDF) 21 Page - SMSC Corporation |
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LPC47M172 Datasheet(HTML) 21 Page - SMSC Corporation |
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21 / 227 page  Advanced I/O Controller with Motherboard GLUE Logic Datasheet SMSC/Non-SMSC Register Sets (Rev. 02-27-04) Page 21 SMSC LPC47M172 DATASHEET PIN# NAME (NOTE 1) DESCRIPTION BUFFER NAME (NOTE 2) PWR WELL (NOTE 3) NOTES 73 nPCIRST_OUT Buffered PCI Reset Output OP14 VTR 74 nPCIRST_OUT 2 Second Buffered PCI Reset Output OP14 VTR 75 nFPRST Reset Input from Front Panel ISPU_400 VTR 77 nBACKFEED_ CUT Open-Drain Output used for STR Circuitry OD8 VTR 3 79 LATCHED_BF_ CUT Latched Backfeed Cut Output for STR Circuitry OP14 VTR 80 SCK_BJT_ GATE Open-Drain Gate Output for the SCK_BJT in Suspend-to-RAM OD8 VTR 3 81 nPS_ON Power Supply Turn-ON Open Drain Output OD8 VTR 3 82 PWRGD_PS Power Good Input from Power Supply ISPU_400 VTR 83 nCPU_PRESENT CPU Present Input from Processor ISPU_400 VTR 84 PWRGD_3V Power Good Output O8 VTR 85 nSLP_S3 S3 Power State Input from South Bridge IS_400 VTR 86 nSLP_S5 Input from South Bridge for Transitioning to the S5 Power State IS_400 VTR 87 SMB_CLK_M SMBus Clock Main IO_SW VTR 88 SMB_CLK_R SMBus Clock Resume IO_SW VTR 89 SMB_DAT_M SMBus Data Main IO_SW VTR 90 SMB_DAT_R SMBus Data Resume IO_SW VTR 92 nRSMRST Resume Reset Output O8 VTR 100 nAUD_LINK_ RST AC97 Link Reset Input I VTR 101 nCDC_DWN_ ENAB/GP24 AC97 Codec Down Enable Input. General Purpose I/O. GPIO can be configured as an open-drain output. IO12 VTR 6 102 nCDC_DWN_ RST AC97 Codec Down Reset Output. O12 VTR 113 DDCSCL_3V/ GP23 3.3V DDC Clock General Purpose I/O. GPIO can be configured as an open-drain output. IO_SW/IS OD8 VTR 3, 6, 8 114 DDCSCL_5V/ GP21 5V DDC Clock General Purpose I/O. GPIO can be configured as an open-drain output. IO_SW/IS OD8 VTR 3, 6, 8 115 DDCSDA_3V/ GP22 3.3V DDC Data General Purpose I/O. GPIO can be configured as an open-drain output. IO_SW/IS OD8 VTR 3, 6, 8 116 DDCSDA_5V/ GP20 5V DDC Data General Purpose I/O. GPIO can be configured as an open-drain output. IO_SW/IS OD8 VTR 3, 6, 8 POWER LEDS (2) 94 GRN_LED Green Power LED Open-Drain Output OD24 VTR 95 YLW_LED Yellow Power LED Open-Drain Output OD24 VTR GENERAL PURPOSE I/O (8) 103- 105 GP10-GP12 General Purpose I/O. GPIO can be configured as an open-drain output. ISO8 VTR 6 |
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