Intel PMB-531LF user manual COM Port Connector, RS-232 RS-422 RS-485

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Chapter 2 Hardware Configuration

2-4. COM PORT CONNECTOR

COM1 : COM1 Connector

COM1 is fixed as RS-232.

The pin assignment is as follows :

PIN	ASSIGNMENT
1	DCD1
2	RX1
3	TX1
4	DTR1
5	GND
6	DSR1
7	RTS1
8	CTS1
9	RI1

COM2 : COM2 Connector

The COM2 is selectable as RS-232/422/485.

The pin assignment is as follows :

PIN		ASSIGNMENT
PIN	RS-232		RS-422	RS-485
	RS-232		RS-422	RS-485
1	DCD2		TX-	TX-
2	RX2		TX+	TX+
3	TX2		RX+	RX+
4	DTR2		RX-	RX-
5	GND		GND	GND
6	DSR2		RTS-	NC
7	RTS2		RTS+	NC
8	CTS2		CTS+	NC
9	RI2		CTS-	NC

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PMB-531LF USER′S MANUAL

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Contents USER’S Manual PMB-531LF Intel Core Duo/Solo FCC Notice Table of Contents Appendix Expansion BUS Introduction About this Manual Hardware ConfigurationCPU System SpecificationsIDE Interface Irda Port Safety Precautions Hardware JKBMS1 Jumper & Connector Quick Reference TableComponent Locations PMB-531LF Connector, Jumper and Component locationsJumpers and Caps HOW to SET the JumpersJumper Settings Jumper DiagramsRS-232 RS-422 RS-485 COM Port ConnectorDCD3 COM3/4 RI & Voltage Selection COM4 RS232/422/485 COM2 Selection Jumper Settings Function Pin closed IllustrationsJPANEL1 13, 15 Reset Connector PS/2 Keyboard and Mouse ConnectorReset Connector ATX Power Button Hard Disk Drive LED ConnectorExternal Speaker Connector JPANEL1 14, 16 ATX Power ButtonKeep Cmos Power LED ConnectorClear Cmos Data Selection System FAN Connector CPU FAN ConnectorPIN Assignment Hard Disk Drive ConnectorVGA Connector Serial ATA Connector Universal Serial BUS Connector MDI3N USB&LAN ConnectorATX Power Connector Irda ConnectorSound Connector Lvds Connector Audio CD-IN ConnectorLvds Panel Voltage Selection Inverter ConnectorFSB Frequency Selection Selections Jumper Setting Jumper Illustrations Power State SelectionSelections Jumper Setting Jumper Illustration RESET/ NMI SelectionsClose CF Card MASTER/SLAVE SelectionsTotal memory size TV OUT ConnectorMemory Installation Software Utilities Filename Purpose Assume that CD ROM drive is D IntroductionVGA Driver Utility Installation of VGA DriverTo update VGA Bios for LCD Flat Panel Display Flash Bios UpdateSystem Bios Update Page3-5 Introduction LAN Driver UtilitySound Driver Utility Installation Procedure for Windows 2000/XP/2003Installation of Utility for Windows 2000/XP/2003 Intel Chipset Software Installation UtilityInstallation of Utility for Windows 2000/XP USB2.0 Software Installation UtilityInstallation of Utility for Windows 2000/2003/XP RAID Software Installation UtilityExample Code Watchdog Timer ConfigurationPage3-12 Award Bios Setup Introduction Setup program initial screen Entering SetupCmos Setup screen Standard Cmos FeaturesTime Halt on VideoBase Memory Extended MemoryAward Hard Disk Type Table Hard Disk AttributesBios Features Setup Screen Advanced Bios FeaturesDelay Prior to Thermal CPU FeatureExecute Disable Bit Thermal Management The used Thermal Monitor C1E FunctionSecurity Option Hard Disk Boot PriorityFIRST/SECOND/ THIRD/ Other Boot Device Apic Mode Advanced Chipset FeaturesChipset Features Setup Screen MPS Version Control for OSDram Timeing Selectable Dram RAS# to CAS# DelayCAS Latency Time Dram RAS# Precharge TimeVideo Bios Cacheable System Bios CacheableDvmt Mode Boot DisplayIntegrated Peripherals Integrated Peripherals Setup ScreenIDE DMA Transfer Access IDE HDD Block ModeOnchip IDE Device OnChip Primary PCI IDEPata IDE Mode Sata ModeSecondary Master/Slave PIO Primary Master/Slave Udma Secondary Master/Slave UdmaUSB Controller Onboard DeviceUSB 2.0 Controller USB Keyboard SupportWatchdog Support Super IO DeviceOnboard Serial Port Power Management Setup Screen Power Management SetupAcpi Function SOFT-OFF by PWR-BTTNPNP/PCI Configuration Setup Screen PNP/PCI ConfigurationReset Configuration Data Init Display FirstIRQ-n Assigned to IRQ ResourcesCurrent CPU Temperature Shutdown TemperaturePC Health Status VcoreLoad Optimized Defaults Load FAIL-SAFE DefaultsTo Disable the Password Password SettingTo SET a Password Save & Exit Setup Exit Without Saving Expansion BUS A-2 MINI-PCI BUS Connector PIN AssignmentA-3 PIN Assignment Compact Flash Card Connector PIN AssignmentTechnical Summary Block Diagram IRQ Assignment Interrupt MAPCode Assignment RTC & Cmos RAM MAPDMA Channel Map Assignment Timer & DMA Channels MAPTimer Channel Map Assignment Map Memory MAPMemory Map