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P720-A

I/O

ODULE

AYOUT

The VIA EPIA-P820 Pico-ITX mainboard is bundled with an I/O
board (P720-A) to support connections to LAN, VGA and USB.

Front View

Top View

Bottom View

Symbol

Description

VGA1

VGA port

USB1

USB 2.0 port 1

USB2

USB 2.0 port 2

RJ1

RJ-45 LAN port

CON1

VGA & USB board-to-board connector

CON2

LAN board-to-board connector

Summary of Contents for epia-p820

Page 1: ...user manual EPIA P820 Pico ITX Mainboard Revision 1 02 102 06082010 1845...

Page 2: ...ion to notify any person of such change Regulatory Compliance FCC A Radio Frequency Interference Statement This equipment has been tested and found to comply with the limits for a class A digital devi...

Page 3: ...ns arises get the equipment checked by authorized service personnel o The power cord or plug is damaged o Liquid has penetrated into the equipment o The equipment has been exposed to moisture o The eq...

Page 4: ...IV Box Contents 1 x EPIA P820 Pico ITX mainboard 1 x P720 A I O module board 1 x SATA cable 1 x SATA power cable 1 x DC In cable 1 x Driver utility CD...

Page 5: ...ors 10 VIA Nano 1 2 GHz processor with Heatsink 10 System Fan connector FAN1 10 DC In Power connector PWR1 11 Serial ATA Power connector PWR2 11 Serial ATA connector SATA1 12 HDMI port connector HDMI1...

Page 6: ...ngs 39 CPU Configuration 39 IDE Configuration 39 ACPI Configuration 39 APM Configuration 39 Spread Spectrum Configuration 39 USB Configuration 39 CPU Configuration 40 CMPXCHG8B instruction support 40...

Page 7: ...nual Throttle Ratio 48 System Thermal 49 Standby Time Out 49 Suspend Time Out 49 Hard Disk Time Out Minute 49 Green PC Monitor Power State 49 Video Power Down Mode 49 Hard Disk Power Down Mode 49 Disp...

Page 8: ...nterrupt 19 Capture 57 Boot Device Priority 58 1st Boot Device 58 Security Settings 59 Change Supervisor Password 59 Change User Password 59 Boot Sector Virus Protection 59 Advanced Chipset Settings 6...

Page 9: ...de 63 SMBus Multi Master 63 PCI VCC33 Leakage Patch 63 PCI Delay Transaction 64 WATCH DOG 64 Exit Options 65 Save Changes and Exit 65 Discard Changes and Exit 65 Discard Changes 65 Load Optimal Defaul...

Page 10: ...X...

Page 11: ...1 1 Product Overview...

Page 12: ...ng 21mm x 21mm Perfectly fit for embedded system applications such as industrial PCs test machines measuring equipment digital signage medical PCs monitoring systems gaming machines in vehicle enterta...

Page 13: ...connector One DIO pin connector 4 GPI 4 GPO Two UART port VCP pin header One SYS fan connector One PS2 mouse keyboard pin header One USB pin header for 4 additional USB 2 0 ports One LAN pin header On...

Page 14: ...Device port pin header PWR2 SATA Power connector CN3 LAN Ethernet pin header FAN1 System Fan connector CN4 Front Panel and PS 2 KBMS pin header VGA_USB1 VGA and USB pin header CN5 LPC SMBus and Digit...

Page 15: ...ol ol ol Description Description Description Description Symbol Symbol Symbol Symbol Description Description Description Description BAT1 CMOS Battery connector SODIMM1 DDR2 SODIMM slot LVDS1 1 CH LVD...

Page 16: ...A to support connections to LAN VGA and USB Front View Top View Bottom View Symbol Symbol Symbol Symbol Description Description Description Description VGA1 VGA port USB1 USB 2 0 port 1 USB2 USB 2 0...

Page 17: ...ble provides a means to connect to the power brick Power Brick The power brick provides a regulated 12V 5A output to power up the EPIA P820 mainboard Note The Power brick is not included in the packag...

Page 18: ...8...

Page 19: ...Pin Headers This chapter provides you with information about hardware installation procedures It is recommended to use a grounded wrist strap before handling computer components Electrostatic discharg...

Page 20: ...d VIA Nano 1 2 GHz NanoBGA2 processor System Fan connector FAN1 FAN1 runs on 5V and maintains system cooling When connecting the cable to the connector always be aware that the red wire positive wire...

Page 21: ...cable Pin Signal 1 DC In 12V 2 GND Serial ATA Power connector PWR2 The mainboard supports a 3 pin SATA power connector for SATA power cable Plug the SATA power cable into the SATA power connector Mak...

Page 22: ...llel ATA HDMI port connector HDMI1 The mainboard has a High Definition Multimedia Interface HDMI port for connecting to high definition video and digital audio The HDMI port allows you to connect digi...

Page 23: ...1 IDERST 2 GND 3 PDD7 4 PDD8 5 PDD6 6 PDD9 7 PDD5 8 PDD10 9 PDD4 10 PDD11 11 PDD3 12 PDD12 13 PDD0 14 PDD13 15 PDD1 16 PDD14 17 PDD2 18 PDD15 19 GND 20 KEY 21 PDDREQ 22 GND 23 PDDIOW 24 GND 25 PDDIOR...

Page 24: ...header CN3 The Ethernet LAN pin header is for connecting to the P720 A I O module Pin Signal Pin Signal 1 A3V3GL 3 3V 2 3 3VSUS 3 TXNC 4 TXND 5 TXPC 6 TXPD 7 TXNA 8 TXNB 9 TXPA 10 TXPB 11 GND 12 LED1...

Page 25: ...n header is for connecting to the P720 A I O module Pin Signal Pin Signal 1 VGA_RED 2 5V 3 VGA_GREEN 4 GND 5 VGA_BLUE 6 DDC_DATA 7 GND 8 DDC_CLK 9 5VUSB_P 10 VGA_VS 11 VGA_HS 12 GND 13 5VSUS 14 GND 15...

Page 26: ...Audio pin header CN1 This pin header allows you to connect a front audio to the mainboard Pin Signal Pin Signal 1 LINE IN_R 2 AUD_GND 3 LINE IN_L 4 MIC IN_L 5 LINE OUT_R 6 MIC IN_R 7 LINE OUT_L 8 JAC...

Page 27: ...ou to connect up to four USB2 0 ports Pin Signal Pin Signal 1 GND 2 GND 3 GND 4 GND 5 USB VD2 6 USB VD3 7 USB VD2 8 USB VD3 9 5VSUS 10 5VSUS 11 USB VD5 12 USB VD4 13 USB VD5 14 USB VD4 15 reserved 16...

Page 28: ...tch power LED HDD LED case speaker and two PS 2 ports Note Pins 1 to 12 are for Front Panel and pin 13 to 18 use for PS 2 KBMS Pin Signal Pin Signal 1 PWR_LED 2 HD_LED 3 5VSUS for LED use 4 HD_LED 5 G...

Page 29: ...t Pin 11 Default SIOSMI Pin Signal Pin Signal 1 GND 2 LAD3 3 SIOOSC 4 LAD2 5 LPCCLK 6 LAD1 7 LDRQ1 8 LFRAME 9 SERIRQ 10 LAD0 11 SIOSMI SIOSMI SIOSMI SIOSMI PME 12 PCIRST1 13 SMB_CLK 14 SMB_DAT 15 5V 1...

Page 30: ...ser to easily convert to support RS232 RS422 RS485 Or the user may use it as the VCP for Video capture Pin 1 Default 5V Pin VCP Signal UART Signal default 1 3 3V 5V 5V 5V 5V 2 SIN_1 3 SOUT_1 4 DCD_1 5...

Page 31: ...o support RS232 RS422 RS485 Or the user may use it as the VCP for Video capture Pin 12 Default 3 3V Pin VCP Signal UART Signal default 1 GND GND 2 DVPSPCLK LPCRST 3 DVPSPD 4 VCPD7 CTS_0 5 VCPD6 RTS_0...

Page 32: ...support Pin 23 DIMMING LVDS Backlight Brightness Voltage Control 0V 3 3V Level 0 0 Level 3 75 Level 1 25 Level 4 100 Level 2 50 Pin Signal Pin Signal 1 LVDSD0 2 LVDSD1 3 LVDSD0 4 LVDSD1 5 GND 6 GND 7...

Page 33: ...23 External Battery BAT1 The mainboard comes with external CMOS battery connector This 2 pin connector used to connect the external cable battery for CMOS Pin Signal 1 3 3VBAT 2 GND...

Page 34: ...t for DDR2 667 533 SDRAM memory modules and supports memory sizes up to 2 GB Available DDR2 SDRAM Configuration Refer to the table below for available DDR2 SDRAM configurations on the mainboard Slot M...

Page 35: ...Step 1 Locate the SODIMM slot in the mainboard and align the notch on the SODIMM with the memory slot Step Step Step Step 2 2 2 2 Insert the SODIMM module at a 45 degree angle Then push the SODIMM do...

Page 36: ...eltron 2208SM 14G BK CP CN4 Front Panel and PS 2 KBMS 18 Pin 2 0mm Neltron 2208SM 18G BK CP CN5 LPC SMBus and Digital I O 26 Pin 2 0mm Neltron 2208SM 26G BK CP J1 VCP UART 10 Pin 1 0mm Neltron 1600R 1...

Page 37: ...27 3 Onboard Jumpers...

Page 38: ...nd 2 afterwards Setting the jumper while the system is on will damage the mainboard The default setting is on pins 1 and 2 Setting 1 2 3 Normal Operation default ON ON OFF Clear CMOS setting OFF ON ON...

Page 39: ...mines the input voltage for the LCD connector Setting 1 2 3 5V ON ON OFF 3 3V default OFF ON ON LCD Backlight Power Selector JM3 This jumper determines the input voltage for the LCD backlight inverter...

Page 40: ...30...

Page 41: ...31 4 P720 A I O Module Installation...

Page 42: ...lign and mount the P720 A board Step 2 Step 2 Step 2 Step 2 Align the CON1 VGA USB board to board connector and CON2 LAN board to board connector of P720 A I O module board with the CN3 and VGA_USB1 p...

Page 43: ...hen gently press down until the pins on the EPIA P820 mainboard have been fully inserted into the CON1 and CON2 connectors of the P720 A I O module board Step 4 Step 4 Step 4 Step 4 Secure the EPIA P7...

Page 44: ...34...

Page 45: ...35 5 BIOS Setup This chapter gives a detailed explanation of the BIOS setup functions...

Page 46: ...eys Description Up Move to the previous item Down Move to the next item Left Move to the previous tab Right Move to the next tab Enter Select the item Esc Jumps to the Exit menu or returns to the main...

Page 47: ...neral Help General Help General Help General Help screen You can display this screen from any menu sub menu by pressing F1 F1 F1 F1 The help screen displays the keys for using and navigating the BIOS...

Page 48: ...ted information Processor CPU information System Memory Memory size System Time Use the key or to configure system time The time format is Hour Minute Second System Date Use the key or to configure sy...

Page 49: ...39 ADVANCED SETTINGS CPU Configuration IDE Configuration ACPI Configuration APM Configuration Spread Spectrum Configuration USB Configuration...

Page 50: ...40 CPU CONFIGURATION CMPXCHG8B instruction support Settings Enabled Disabled Nano CPU Thermal Monitor Adjust Settings Disabled Thermal Monitor 1 Thermal Monitor 2 Thermal Monitor 3...

Page 51: ...Parallel ATA IDE Controller Settings Disabled Primary Hard Disk Write Protect Settings Disabled Enabled IDE Detect Time Out Sec Settings 0 5 10 15 20 25 30 35 ATA PI 80Pin Cable Detection Settings Hos...

Page 52: ...42 IDE DRIVES Primary IDE Master Primary IDE Slave SATA Device Type Settings Not Installed Auto CD DVD ARMD LBA Large Mode Settings Disabled Auto...

Page 53: ...isabled Auto PIO Mode Settings Auto 0 1 2 3 4 DMA Mode Settings Auto S M A R T Self Monitoring Analysis and Reporting Technology a monitoring system for hard disks Settings Auto Disabled Enabled 32Bit...

Page 54: ...44 ACPI SETTINGS General ACPI Configuration This menu contains ACPI Advanced Configuration and Power Management Interface options Advanced ACPI Configuration Chipset ACPI Configuration...

Page 55: ...ll system contexts S3 STR S3 Suspend To RAM STR is a power down state In this state power is supplied only to essential components such as main memory and wakeup capable devices The system context is...

Page 56: ...s ACPI v1 0 ACPI v2 0 ACPI v3 0 ACPI APIC Support To include ACPI APIC table pointer to RSDT pointer list Settings Enabled Disabled AMI OEMB Table To include OEMB table pointer to R X SDT pointer list...

Page 57: ...47 CHIPSET ACPI CONFIGURATION USB Device Wakeup Function Settings Disabled Enabled...

Page 58: ...will respond after an AC power loss during system operation Settings Description Power Off Keeps the system in an off state until the power button is pressed Power On Restarts the system when the powe...

Page 59: ...isabled Standby Suspend Hard Disk Power Down Mode Settings Disabled Standby Suspend Display Activity Settings Ignore Monitor Monitor IRQ3 15 Enables or disables the monitoring of the specified IRQ lin...

Page 60: ...ed S3 S3 S4 S5 Wake up Key Settings Any Key Specific Key Resume on PS 2 Mouse Enable any mouse activity to restore the system from the power saving mode to an active state Settings Disabled S3 S3 S4 S...

Page 61: ...51 SPREAD SPECTRUM CONFIGURATION Spread Spectrum Configuration Settings Disabled 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9...

Page 62: ...enable USB 2 0 host controllers Settings Disabled Enabled USB Device Mode Enable Settings Enabled Disabled Legacy USB Support To enable support for legacy USB Settings Disabled Enabled Auto USB 2 0 C...

Page 63: ...as it is unless you are an experienced user Clear NVRAM To clear NVRAM during system boot Settings No Yes Plug Play O S Settings No Yes PCI Latency Timer Value in units of PCI clocks for PCI device la...

Page 64: ...Settings Auto PCI Slot1 PCI Slot2 PCI Slot3 PCI Slot4 PCI Slot5 PCI Slot6 IRQ3 15 Settings Available Reserved DMA Channel 0 7 Settings Available Reserved Reserved Memory Size To decide the size of mem...

Page 65: ...55 BOOT SETTINGS Boot Settings Configuration Configuration settings during system boot Boot Device Priority Specifies the boot device priority sequence...

Page 66: ...Disabled Enabled AddOn ROM Display Mode Settings Force BIOS Keep Current Bootup Num Lock To select power on state for Num Lock Settings Off On PS 2 Mouse Support Settings Disabled Enabled Auto Wait Fo...

Page 67: ...57 Interrupt 19 Capture Settings Disabled Enabled...

Page 68: ...Device To specifies the boot sequence from the available devices The available boot devices are detected dynamically according to real situation and variable options will be provided Settings Network...

Page 69: ...p is run This prevents an unauthorized person from changing any part of your system configuration When a supervisor password is used the BIOS Setup program can be accessed and the BIOS settings can be...

Page 70: ...aution The Advanced Chipset Features menu is used for optimizing the chipset functions Do not change these settings unless you are familiar with the chipset North Bridge VIA VX855 Configuration South...

Page 71: ...ware Reset E2 Issue Settings Patch Escape Patch Change DCLK using RDCKM Settings Program Escape Program Dynamic CKE Settings Disabled Enabled NB Performance Register Settings Disabled Enabled NB Energ...

Page 72: ...ze Settings 64MB 128MB 256MB CPU Direct Access Frame Buffer Settings Disabled Enabled Select Display Device Settings CRT LCD HDMI CRT LCD CRT HDMI Panel Type Settings 02 Dithering Settings Disabled En...

Page 73: ...led ISA Master Support Settings Support Not Support High Definition Audio Settings Disabled Auto Enable Embedded COM Settings Disabled Enabled PCI Debug Master Mode Settings Disabled Enabled SMBus Mul...

Page 74: ...64 PCI Delay Transaction Settings Disabled Enabled WATCH DOG Settings Disabled Enabled...

Page 75: ...t saving any changes or press Esc Discard Changes Discard changes which have been done so far to any of the setup questions or press F7 Load Optimal Defaults Load optimal default values for all the se...

Page 76: ...66...

Page 77: ...ief descriptions of each mainboard driver and application You must install the VIA chipset drivers first before installing other drivers such as VGA drivers The applications will only function correct...

Page 78: ...com tw Running the Driver Utilities CD To start using the CD insert the CD into the CD ROM or DVD ROM drive The CD should run automatically after closing the CD ROM or DVD ROM drive The driver utilit...

Page 79: ...es the VIA Power Management function Includes V RAID and RAID tools VIA Graphics Driver VIA Graphics Driver VIA Graphics Driver VIA Graphics Driver Enhances the onboard VIA graphic chip Windows XP and...

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