Nexcom PEAK 735 Series User Manual Download

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J16:External Keyboard

Definition

KBCLK

KBDATA

GND

+5V

JP2:SPEAKER External connector

Definition

SPEAKERR#

GND

+5V

JP4: IDE Active LED connector

Definition

+5V

IDE_LED

JP7: GPIO connector

Definition

GP27_D_IN1 ( PIN20 )

GP23_D_OUT 1 ( PIN24 )

GP26_D_IN2 ( PIN21 )

GP22_D_OUT 2 ( PIN25 )

GP25_D_IN3 ( PIN22 )

GP21_D_OUT 3 ( PIN26 )

GP24_D_IN4 ( PIN23 )

GP20_D_OUT 4 ( PIN27 )

JP8: Keylock

/Power LED

connector

Definition

+5V Pull-up

(Power LED)

N.C

GND

(Power LED)

Keylock

GND

(Key Lock)

JP9: IR connector

Definition

+5V

CIRRX

RIRX

GND

IRTX

JP10:82551QM LAN External SPEED LED connector

Definition

+3VSBY

SPEED_LAN

JP11:SMBUS External connector

Definition

SMBCLK

SMBDATA

JP12:ATX Push Button connector

Definition

GND

PWRBT#

Summary of Contents for PEAK 735 Series

Page 1: ......

Page 2: ...names mentioned herein are registered trademarks of their respective owners Regulatory Compliance Statements This section provides the FCC compliance statement for Class A devices and describes how to keep the system CE compliant FCC Compliance Statement for Class A Devices The product s described in this user s guide has been tested and proved to com ply with the limits for a Class A digital devi...

Page 3: ...3 3 Changing CPU 26 3 4 Installing Fan Heatsink 27 3 5 Serial ATA 30 Chapter 4 Award BIOS Setup 31 4 1 Entering Setup 33 4 2 The Main Menu 33 4 3 Getting Help 35 4 4 Control Keys 36 4 5 Standard CMOS Features 37 4 6 Advanced BIOS Features 41 4 7 Advanced Chipset Features 45 4 8 Integrated Peripherals 46 4 9 Power Management Setup 49 4 10 PnP PCI Configurations 52 4 11 PC Health Status 53 4 12 Load...

Page 4: ...4 Installing USB 63 Appendix A Watchdog Timer Setting 67 A 1 Watchdog Timer Working Procedure 67 A 2 Watchdog Timer Control Register 68 A 3 Watchdog Timer Programming Procedure 68 A 3 1 Power On or Reset the System 68 A 3 2 Clear the WDT 69 A 3 3 WDT Control Register 69 3 Appendix B GPIO Programming Guide 70 ...

Page 5: ...4 Chapter 1 General Information Chapter 1 General Information ...

Page 6: ...o Serial ATA port 150MB s x 2 USB 2 0 port 480Mbps x 2 1 2 Specifications System Architecture Full size SBC with PCI ISA golden finger DVI 1 0 compliant optional PICMG 1 0 Rev 2 0 compliant USB 2 0 compliant CPU Support Intel Pentium 4 processor with 256K 512K L2 cache on die mPGA478 socket supports 400 533 800MHz system bus CPU speed up to 3 2GHz Support Hyper ThreadingTM technology Main Memory D...

Page 7: ... 98 and PC 99 compliant 15 pin CRT connector x 1 On Chip I O ICH5 On board USB port x 2 USB 2 0 compliant Ultra ATA100 66 33 support 40 pin connector x 2 2 pin power connector for DOM Disk On Module Serial ATA support SATA connector x 2 data transfer bandwidth up to 150MB On Board I O ITE 8712F A Super I O SIO x 2 with 2x16C550 UARTs 10 pin header x 2 PIO x 1 bi directional EPP ECP support 26 pin ...

Page 8: ...e by software from 1 2 4 8 16 32 to 128 seconds PCI to ISA Bridge ISAMAX Support ITE 8888F x1 PCI to ISA Bridge Provide 64mA driving capability to maximize ISA signals for supporting ISA cards up to 20 on the backplane ISA slot Dimensions 338 58mm L x 122mm W 13 3 L x 4 8 W Power Requirements 5V 12V 12V ATX AT Power Consumption Model PEAK 735VL2 G CPU 3 0G 2 4G 12V 6 5A 4 5A 5V 5 4A 4A 3 3V 0 5A 0...

Page 9: ... 82562EX 10 100 LCI Ethernet Controller Dual LAN Intel 82551QM 10 100 Ethernet Controller Serial ATA Connector x 2 ATX 5V Standby Power Connector Intel865G Chipset w integrated VGA Controller Socket 478 Intel Pentium 4 processor up to 3 2GHz with 800MHz FSB Max2GB DDR 400 Dual Channel Memory in 2 DIMM Slots ...

Page 10: ...wing of this model is shown below One PEAK 735 Quick Reference Guide One 50CM Cable JST 2 5mm 3 pin to 3 pin 5V standby ATX Power on Cable One Y Cable for Keyboard and Mouse One 180 mm AUX Power Cable for J2 One Cable Set FDD x1 SIO PIO x1 SIO x1 Keyboard x1 IDE66 x1 One USB Cable with Bracket One Driver Manual CD Figure 1 1 Mechanical Drawing of PEAK 735 Series 9 ...

Page 11: ...10 Chapter 2 Jumper Switch Settings ...

Page 12: ...ect Static electricity can damage many of the electronic components Humid environment tend to have less static electricity than dry environments A grounding strap is warranted whenever danger of static electricity exists Precautions Computer components and electronic circuit boards can be damaged by discharges of static electricity Working on the computers that are still connected to a power suppl...

Page 13: ...em Fan J12 COM1 J13 COM2 J14 PIO J15 ATX Connector J16 External Keyboard JP2 Speaker JP4 IDE LED JP7 GPI O Port JP8 Keylock Power LED JP9 IR Connector JP10 82551 LAN Speed 100 LED JP11 82551 LAN ACT LINK LED JP12 ATX Push Button JP13 82747 82562 LAN speed 100 LED JP16 82747 LAN speed 1000 LED JP17 Reset JP18 82747 82562 LAN ACT LINK LED JP20 SMBUS CON1 VGA Connector CON2 82551 LAN Connector CON3 8...

Page 14: ...s SHORT If you remove the jumper cap or place the jumper cap on just one pin the jumpr is OPEN Please see the following illustrations Figure 2 1 How to Set Jumpers 13 The illustrations on the right show a 2 pin jumper When the jumper cap is placed on both pins the jumper is SHORT If you remove the jumper cap or place the jumper cap on just one pin the jumper is OPEN Open Off Short On These illustr...

Page 15: ...2 3 Location of Jumpers The illustration below shows the location of the mainboard jumpers Figure 2 2 Location of Jumpers 14 Pin 1 ...

Page 16: ... LAN 82551 Enable ON ON X OFF ON Board LAN 82551 Disable OFF ON X OFF ON Board TMDS Enable X ON ON OFF ON Board TMDS Disable X ON OFF OFF DDR VDDQ Select 2 5V 2 6V 2 7V 2 8V JP5 OFF ON OFF ON JP6 OFF OFF ON ON AT ATX Power model Select AT ATX JP15 1 2 2 3 JP14 1 2 RTC Clear NORMAL Clear CMOS JP19 1 2 2 3 ...

Page 17: ...1A 11 PDD3A 12 PDD712A 11 SDD3A 12 SDD712A 13 PDD2A 14 PDD713A 13 SDD2A 14 SDD713A 15 PDD1A 16 PDD714A 15 SDD1A 16 SDD714A 17 PDD0A 18 PDD715A 17 SDD0A 18 SDD715A 19 GND 20 NC 19 GND 20 NC 21 PDREQA 22 GND 21 SDREQA 22 GND 23 PDIOW A 24 GND 23 SDIOW A 24 GND 25 PDIOR A 26 GND 25 SDIOR A 26 GND 27 PIORDYA 28 IDE PD1 27 SIORDY A 28 IDE PD2 29 PDDACK A 30 GND 29 SDDACK A 30 GND 31 HDIRQ14 32 NC 31 HD...

Page 18: ...ion Pin Definition 1 5VSBY 2 DATA0 3 DATA0 4 DATA1 5 DATA1 6 GND J7 USB External Power connector Pin Definition Pin Definition 1 5VSBY 2 GND J8 FDD connector Pin Definition Pin Definition 1 GND 2 DENSEL 3 GND 4 NC 5 GND 6 NC 7 GND 8 INDEX 9 GND 10 MOTEA 11 GND 12 DRVB 13 GND 14 DRVA 15 GND 16 MOTEB 17 GND 18 DIR 19 GND 20 STEP 21 GND 22 WDATA 23 GND 24 WGATE 25 GND 26 TK00 27 GND 28 WPT 29 GND 30 ...

Page 19: ...n Definition Pin Definitio n Pin Definition Pin Definitio n 1 BDCD1 2 BRXD1 1 BDCD2 2 BRXD2 3 BTXD1 4 BDTR1 3 BTXD2 4 BDTR2 5 GND 6 BDSR1 5 GND 6 BDSR2 7 BRTS1 8 BCTS1 7 BRTS2 8 BCTS2 9 BRI1 10 GND 9 BRI2 10 GND J14 PIO connector Pin Definition Pin Definition 1 P_STB 14 P_AFD 2 P_PD0 15 P_ERR 3 P_PD1 16 P_PINIT 4 P_PD2 17 P_SLIN 5 P_PD3 18 GND 6 P_PD4 19 GND 7 P_PD5 20 GND 8 P_PD6 21 GND 9 P_PD7 2...

Page 20: ...GP22_D_OUT2 PIN25 5 GP25_D_IN3 PIN22 6 GP21_D_OUT3 PIN26 7 GP24_D_IN4 PIN23 8 GP20_D_OUT4 PIN27 JP8 Keylock Power LED connector Pin Definition Pin Definition 1 5VPull up Power LED 2 N C 3 GND PowerLED 4 Keylock 5 GND Key Lock JP9 IR connector Pin Definition Pin Definition 1 5V 2 CIRRX 3 RIRX 4 GND 5 IRTX JP10 82551QM LAN External SPEED LEDconnector Pin Definition Pin Definition 1 3VSBY 2 SPEED_LAN...

Page 21: ...ernal ACTIVE LINK LED connector Pin Definition Pin Definition 1 LINK_UP 2 ACTIVITY JP20 SMBUS connector Pin Definition Pin Definition 1 SMBCLK 2 SMBDATA CON1 VGA connector Pin Definition Pin Definition 1 RED 2 GREEN 3 BLUE 4 NC 5 GND 6 GND 7 GND 8 GND 9 5V 10 GND 11 NC 12 DDCDAT 13 HSYNC 14 VSYNC 15 DDCCLK CON2 82551 RJ45 connector Pin Definition Pin Definition 1 LAN1_TXP 2 LAN1_TXN 3 LAN1_RXP 4 T...

Page 22: ..._MDX_2P 5 LAN2_MDX_2N 6 LAN2_MDX_1N_RXN 7 LAN2_MDX_3P 8 LAN2_MDX_3N 9 LAN2_LINK1000 10 3VSBY 11 LAN2_LINK_UP 12 LAN2_ACTIVITY CON4 AUX 12VPowerConnector Pin Definition Pin Definition 1 GND 2 GND 3 12V 4 12V CON5 Key board mouse connector Pin Definition Pin Definition 1 KBDATA 2 MOUSEDATA 3 GND 4 5V 5 KBCLK 6 MOUSECLK 21 ...

Page 23: ...Chapter 3 Expanded Capabilities 22 ...

Page 24: ...ory banks Please be noted that the PEAK 735 Series supports Double Data DDR333 SDRAM Configurations using different brands of memory modules are not recommended DIMM 1 DIMM2 Total Memory 128MB Empty 128MB Empty 128MB 128MB 128MB 128MB 256MB 256MB Empty 256MB Empty 256MB 256MB 256MB 256MB 512MB 512MB Empty 512MB Empty 512MB 512MB 512MB 512MB 1024MB 1024MB Empty 1024MB Empty 1024MB 1024MB 1024MB 102...

Page 25: ...e the two handles of the DIMM sockets are in the open position i e the handles stay outward Figure 3 1 How to Install DIMM 1 2 Slowly slide the DIMM modules along the plastic guides in the both ends of the socket Figure 3 2 How to Install DIMM 2 24 ...

Page 26: ...two handles automatically locked the memory modules into the right position of the DIMM socket 4 To take away the memory module just push the both handles outward the memory module will be ejected by the mechanism in the socket Figure 3 3 How to Install DIMM 3 Figure 3 4 How to Install DIMM 4 25 ...

Page 27: ...efully lift the existing CPU up to remove it from the socket 2 Place the new CPU on the middle of the socket orienting its beveled corner to line up with the socket s beveled corner Make sure the pins of the CPU fit evenly to the socket openings Replace the handling bar to fasten the CPU to the socket Figure 3 5 How to Change CPU 26 ...

Page 28: ...eatsink to rotate or twist on the processor s integrated heat spreader Securing the fan heatsink while closing the clip levers will ensure the thermal interface material is not damaged and the pro cessor will operate correctly Follow these steps for closing the clip levers and ensuring the thermal interface material is not damaged a Make sure to close the clips levers in opposing directions one at...

Page 29: ...al to determine the correct fan header to use Fan Heatsink and Clip Assembly Terminology Align Fan Heatsink and Clip Assembly Figure 3 8 Installing the Fan Heatsink 3 Push Down Clip Frame Corners to Secure to Retention Mechanism Hooks Figure 3 6 Installing the Fan Heatsink 1 Figure 3 7 Installing the Fan Heatsink 2 28 ...

Page 30: ...sink 5 Close Clip Levers Close Clip Lever 1 One at a Time While Holding the Topside of Fan Heatsink A Figure 3 9c Installing the Fan Figure 3 10 Installing the Fan Heatsink 6 Heatsink 7 Close Clip Lever 2 Connect Fan Cable to Motherboard While Holding the Topside of Fan Heatsink B ...

Page 31: ...ce Status listed in the Standard CMOS Features Serial ATA Port O I Mode Select a compatible mode for Port 1 and Port 2 from the Award Setting to the Chipset Setting Primary Master Compatible Mode w Serial ATA Port 1 set to Primary Master Primary Slave Primary Slave Secondary Master Secondary Master Secondary Slave Secondary Slave Primary Master Compatible Mode w only serial ATA Enabled and Port 1 ...

Page 32: ...31 Chapter 4 Award BIOS Setup ...

Page 33: ...ormation even when the power is turned off When the system is turned back on the system is configured with the values found in CMOS With easy to use pull down menus you can configure such items as Hard drives diskette drives and peripherals Video display type and display options Password protection from unauthorized use Power management features When to Run BIOS This program should be executed und...

Page 34: ...e Powering on the computer and immediately pressing Del allows you to enter Setup Another way to enter Setup is to power on the computer and wait for the following message during the POST TO ENTER SETUP BEFORE BOOT PRESS CTRL ALT ESC OR DEL KEY Press the Del key or press the Ctrl Alt and Esc keys to enter Setup 4 2 The Main Menu Once you enter Award BIOS CMOS Setup Utility the Main Menu Figure 1 w...

Page 35: ...ages Value Load Fail Safe Defaults Use this menu to load the BIOS default values for the minimal stable performance for your system to operate Load Optimized Defaults Use this menu to load the BIOS default values i e factory settings for optimal performance system operations While Award has de signed the custom BIOS to maximize performance the factory has the option to change these defaults to mee...

Page 36: ...ing Help Main Menu The on line description of the highlighted setup function is displayed at the bot tom of the screen Status Page Setup Menu Option Page Setup Menu Press F1 to pop up a small help window that describes the appropriate keys to use and the possible selections for the highlighted item To exit the Help Window press F1 or Esc 35 ...

Page 37: ...em PgUp plus key Increase the numeric value or make changes PgDn minus key Decrease the numeric value or make changes F1 key F1 General help only for Status Page Setup Menu and Option Page Setup Menu F2 Shift F2 key Change color from total 16 colors F2 to select color forward Shift F2 to select color backward F5 key Restore the previous CMOS value from CMOS only for O ption Page Setup Men u F6 key...

Page 38: ... format in hour minute second The time is calculated based on the 24 hour military time clock For example 1 p m is 13 00 00 Figure 4 3 BIOS Standard CMOS Features 37 The Standard CMOS Setup utility is used to configure the following features Date mm dd yy The BIOS determines the day of the week from the other data information This field is for information only Press the left or right arrow key to ...

Page 39: ...disk drive that supports LBA mode more than one line will appear in the parameter box Choose the line that lists LBA for an LBA drive Do not choose Large or Normal if the hard disk drive is already fully formatted when you installed it Select the mode that was used to format it IDE Channel Slave If you leave this item at Auto the system will automatically detect and configure any IDE devices it fi...

Page 40: ...m will automatically decide the fastest way to access the hard disk drive Press Esc to close the IDE device submenu and return to the Standard CMOS Features page FloppyDrive A Options for these fields are None No floppy drive installed 360K 5 25 in 5 1 4 inch PC type standard drive 360 kilobyte capacity 1 2M 5 25 in 5 1 4 inch AT type high density drive 1 2 megabyte capacity 720K 3 5 in 3 1 2 inch...

Page 41: ...or all other errors All But Disk Key The system boot will not stop for a keyboard or disk error it will stop for all other errors Base Extended Total Memory This category is display only The contents are determined by the POST Power On Self Test of the BIOS You cannot make changes to these fields Base Memory Also called conventional memory The DOS operating system and conventional applications use...

Page 42: ...o select the first boot hard disk Virus Warning Allows you to choose the Virus Warning feature for IDE Hard Disk boot sector protection If this function is enabled and someone attempts to write data into this area BIOS will show a warning message on screen and an alarm will beep Enabled Activates automatically when the system boots up causing the follow ing warning message to appear when anything ...

Page 43: ... execute two or more separate threads concurrently When hyper threading is enabled multi threaded software applications can execute their threads in parallel thereby im proving the processor s performance Quick Power On Self Test This item speeds up the Power On Self Test POST when you turn on the computer If it is set to Enabled BIOS will shorten or skip some check items dur ing the POST First Se...

Page 44: ... If set to Enabled enables you to set the Typematic Rate and Typematic Delay Typematic Rate Chars Sec This setting controls the speed at which the system registers held down key strokes The choices range from 6 to 30 Chars Sec Typematic Delay Msec This setting controls the time between the display of the first character and suc cessive characters There are four delay choices 250ms 500ms 750ms and ...

Page 45: ...a Win32 operating system Windows NT 2000 and XP it s recommended that you enable this feature to allow faster and better IRQ handling If you are using a multiprocessor motherboard you must enable this feature because it s required for IRQ handling in multiprocessor systems OS Select for DRAM 64MB Set to OS2 if the system memory size is greater than 64 MB and the operating system is OS 2 44 ...

Page 46: ... Video BIOS Cacheable Selecting Enabled allows caching of the video BIOS ROM at C0000h resulting in better video performance However if any program writes to this memory area a system error may result The choices Enabled Disabled Memory Hole at 15M 16M In order to improve performance certain space in memory is reserved for ISA cards This memory must be mapped into the memory The choices Enabled Di...

Page 47: ...ck mode and a PCI IDE interface with support for two IDE Primary Master Slave PIO s and two IDE Primary Master Slave UDMA s and two IDE Secondary Master Slave PIO s and two IDE Second ary Master Slave UDMA s Select Enabled to activate the primary and or second ary IDE interface Select Disabled to deactivate this interface if you install a primary and or secondary add in IDE interface On Chip Seria...

Page 48: ...I Mode Select a compatible mode for Port 1 and Port 2 from Award Setting to the chipset settings Primary Master Compatible Mode with Serial ATA Port 1 set to Primary Master Primary Slave Compatible Mode with Serial ATA Port 1 set to Primary Slave Secondary Master Compatible Mode with Serial ATA Port 1 set to Secondary Master Secondary Slave Compatible Mode with Serial ATA Port 1 set to Secondary S...

Page 49: ... This item allows you to select UART mode The choices Normal IrDA ASKIR UR2 Duplex Mode In an infrared port mode this field appears Full duplex mode permits simultaneous two direction transmission Half duplex mode permits transmission in one direction only at a time Select the value required by the IR device connected to the IR port Onboard Serial Ports 1 2 3 4 This feature allows you to manually ...

Page 50: ...rogram screen CSA LAN Giga LAN Select Enabled for CSA LAN function 4 9 Power Management Setup Figure 4 7 BIOS Power Management Setup Auto PWR Failure Resume This setting specifies whether your system reboots after a power failure There are three selections Off The system will remain off when power comes back after a power failure On The system will switch on when power comes back after a power fai...

Page 51: ...tion will cause the system to turn off the vertical and horizontal synchronization port and write blanks to the video buffer 2 Blank Screen This option only writes blanks to the video buffer 3 DPMS Support Select this option if your monitor supports the Display Power Management signaling DPMS standard of the Video Electronics Standard to select video power management values Video Off In Suspend Th...

Page 52: ...oming call on the modem awakens the system from a soft off state The choices Enabled Disabled Reload Global Timer Events Primary IDE 0 Primary IDE 1 Secondary IDE 0 Secondary IDE 1 FDD COM LPT Port PCI PIRQ A D The events are I O events whose occurrence can prevent the system from entering a power saving mode or can awaken the system from such a mode In effect the sys tem remains alert for anythin...

Page 53: ...led Resources Controlled By The Award Plug and Play BIOS has the capacity to automatically configure all of the boot and Plug and Play compatible devices However this capability means absolutely nothing unless you are using a Plug and Play operating system such as Windows95 If you set this field to Manual then choose specific resources by going into each of the submenus that follows this field The...

Page 54: ...4 11 PC Health Status Figure 4 9 BIOS PC Health Status 53 After you have read the PC Health Status press the ESC key to go back to the main program screen ...

Page 55: ... display that option and then press the F7 key 4 13 Set Supervisor User Password The Supervisor User Password utility sets the password The mainboard is shipped with the password disabled If you want to change the password you must first enter the current password then at the prompt enter your new password The password is case sensitive You can use up to eight alphanumeric characters Press Enter a...

Page 56: ...ng Enter will save the new setting information in the CMOS memory and continue with the booting process 4 15 Exit Without Saving Selecting this option and pressing Enter will exit the Setup Utility without recording any new values or changing old ones 55 ...

Page 57: ...56 Chapter 5 Driver Installation ...

Page 58: ...dows 2000 operating system Step 5 1 2 After the menu displays select the folder of GRAPHICS 57 PEAK 735 Series comes with a driver installation CD ROM that enables you to install VGA driver software INF Intel Chipset Software Installation Utility LAN and USB Step 5 1 3 After this screen displays double click the blue sign SETUP ...

Page 59: ... Step 5 1 5 If you accept License Agreement click Yes to continue 58 Step 5 1 6 An installation wizard will inform successful completion of driver software installation and ask you to restart your computer Select Yes I want to restart my computer now and then click Finish After your computer reboots VGA driver is already setup in your computer ...

Page 60: ...iver go back to 5 1 Go through step 5 11 to step 5 14 again and open the folder of INF to start installing INF Step 5 2 1 Open the folder of INF 5 00 1012 Step 5 2 2 Double click the blue sign INFINST_ENU Step 5 2 3 Click Next to install INF 59 ...

Page 61: ...Step 5 2 4 Click Yes to continue Step 5 2 5 Click Yes Step 5 2 6 Select Yes I want to restart my computer now Then click Finish INF is installed 60 ...

Page 62: ... Go through step 5 1 1 to step 5 1 4 again and open the folder of LAN driver Step 5 3 1 After the folder of LAN driver displays click it Step 5 3 2 Double click the Autorun Icon Step 5 3 3 Click Wired LAN Adapter or Wireless LAN Adapter for installation 61 ...

Page 63: ...Step 5 3 4 Install or update the minimum drivers for Intel PRO adapters 62 Step 5 3 5 Install or update drivers for Intel PRO adapters ...

Page 64: ...nstalling the LAN driver go back to computer desktop and open My Computer Step 5 4 1 Double click the My Computer icon to open it Step 5 4 2 Choose Properties in the drop menu Step 5 4 3 Click OK in the System Properties Menu 63 ...

Page 65: ...Step 5 4 4 Click USB Controller in the Device Manager folder Step 5 4 5 To update the driver files for this device click Update Driver Step 5 4 5 To continue click Next 64 ...

Page 66: ...Step 5 4 5 To upgrade a device driver click Next Step 5 4 6 To upgrade a device driver click Next Step 5 4 7 To install the driver Windows found click Next 65 ...

Page 67: ...Step 5 4 8 To close this wizard click Finish 66 ...

Page 68: ...nitored item doesn t occur before the timer reaches zero WDT performs an action such as a diagnos tic operation rebooting the computer You must enter timer values into WDT Configuration Register Write the control value to the Configuration Port and clear WDT counter read the Configuration Port WDT Configuration port F2 Default at F2 Watch Dog Timer Disabled 1 Default at disabled Enabled 2 Enabled ...

Page 69: ...on A 3 Watchdog Timer Programming Procedure A 3 1 Power On or Reset the System The initial value of WDT Control Register D3 D0 is zero 0 when power is on or the system has been reset The following table indicates the initial value of WDT 00000000b Bit Value Mean 3 0 Disable Watchdog Timer 2 1 0 0 0 0 Select 64 second Table A 3 WDT Control Register Initial Value Table B 2 WDT Control Register Bit D...

Page 70: ...to WDT configuration port Set WDT Control Register to control the WDT working mode The initial value of WDT Control Register is shown as follows Setting the WDT Control Register as AL Mov al 0h Setting initial value 0 for the WDT Control Register Follow these instructions to set the register 1 Select the time out intervals of WDT decide the values of D2 D1 D0 in F2 Example If D2 D0 0 the time out ...

Page 71: ...value to WDT Configuration Port Then WDT will start according to the above settings MOV dx F2h Setting WDT Configuration Port OUT dx al Output the Control Register Value 70 Appendix B GPIO USER GUIDE DIGITAL I O UESD PORT 801 JP17 IN 0 IN 1 IN 2 IN 3 OUT 0 OUT 1 OUT 2 OUT 3 1 2 3 4 5 6 7 8 I3 I2 I1 I0 O3 O2 O1 O0 Input Output ...

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