CAPA841/842 Intel® AtomTM E3845/E3827 Intel® Celeron® J1900/N2807 Processors Capa Board User’s Manual Disclaimers This manual has been carefully checked and believed to contain accurate information. Axiomtek Co., Ltd. assumes no responsibility for any infringements of patents or any third party’s rights, and any liability arising from such use. Axiomtek does not warrant or assume any legal liability or responsibility for the accuracy, completeness or usefulness of any information in this document. Axiomtek does not make any commitment to update the information in this manual. Axiomtek reserves the right to change or revise this document and/or product at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Axiomtek Co., Ltd. CAUTION If you replace wrong batteries, it causes the danger of explosion. It is recommended by the manufacturer that you follow the manufacturer’s instructions to only replace the same or equivalent type of battery, and dispose of used ones. Copyright 2014 Axiomtek Co., Ltd. All Rights Reserved October 2014, Version A2 Printed in Taiwan ii ESD Precautions Computer boards have integrated circuits sensitive to static electricity. To prevent chipsets from electrostatic discharge damage, please take care of the following jobs with precautions: Do not remove boards or integrated circuits from their anti-static packaging until you are ready to install them. Before holding the board or integrated circuit, touch an unpainted portion of the system unit chassis for a few seconds. It discharges static electricity from your body. Wear a wrist-grounding strap, available from most electronic component stores, when handling boards and components. Trademarks Acknowledgments Axiomtek is a trademark of Axiomtek Co., Ltd. ® Windows is a trademark of Microsoft Corporation. AMI is a trademark of American Megatrend Inc. IBM, PC/AT, PS/2, VGA are trademarks of International Business Machines Corporation. ® ® Intel and Celeron are trademarks of Intel Corporation. Other brand names and trademarks are the properties and registered brands of their respective owners. iii Table of Contents Disclaimers ..................................................................................................... ii ESD Precautions ........................................................................................... iii Chapter 1 Introduction ............................................. 1 1.1 Features ............................................................................................... 2 1.2 Specifications ...................................................................................... 2 1.3 Utilities Supported .............................................................................. 3 Chapter 2 Board and Pin Assignments .................... 5 2.1 Board Dimensions and Fixing Holes ................................................. 5 2.2 Board Layout ....................................................................................... 7 2.3 Jumper Settings .................................................................................. 9 2.3.1 2.3.2 2.3.3 2.3.4 2.3.5 2.3.6 2.3.7 2.3.8 2.3.9 2.4 Connectors ........................................................................................ 13 2.4.1 2.4.2 2.4.3 2.4.4 2.4.5 2.4.6 2.4.7 2.4.8 2.4.9 2.4.10 2.4.11 2.4.12 2.4.13 2.4.14 2.4.15 2.4.16 2.4.17 iv LVDS Voltage Selection (JP1 and JP6) .................................................... 10 Audio Output Selection (JP2) .................................................................... 10 LVDS Brightness Control Mode Setting (JP3) .......................................... 10 Restore BIOS Optimal Defaults (JP4) ....................................................... 10 COM4 Data/Power Selection (JP7) ............................................................ 11 COM3 Data/Power Selection (JP8) ............................................................ 11 Auto Power On (JP10) ............................................................................... 11 COM2 Data/Power Selection (JP11) .......................................................... 11 COM1 Data/Power Selection (JP12) ......................................................... 12 Front Panel Connector (CN1) ................................................................... 14 Inverter Connector (CN2) .......................................................................... 15 LVDS Connector (CN3) ............................................................................. 15 Audio Connector (CN4) ............................................................................. 17 Digital I/O Port Connector (CN5) ............................................................... 17 Fan Connector (CN7) ................................................................................ 17 SMBus Connector (CN8) .......................................................................... 17 USB Wafer Connector (CN9) .................................................................... 18 HDMI Connector (CN10) ........................................................................... 18 COM3 and COM4 Connector (CN11) ....................................................... 19 SATA Power Connector (CN12) ................................................................ 19 VGA Connector (CN14) ............................................................................. 19 Power Connector (ATX1) .......................................................................... 20 SATA Connector (SATA1) .......................................................................... 20 USB Port (USB1)....................................................................................... 21 CFast™ Socket (SCFAST1) ...................................................................... 21 Ethernet Ports (LAN1 and LAN2) .............................................................. 22 2.4.18 2.4.19 2.4.20 2.4.21 2.4.22 2.4.23 COM1 Connector (COM1) ........................................................................ 22 COM2 Connector (COM2) ........................................................................ 23 CMOS Battery Connector (BAT1) ............................................................. 23 Half-size PCI-Express Mini Card Connector (SCN1) ................................ 24 Full-size PCI-Express Mini Card Connector (SCN2) ................................ 25 SIM Card Socket (SCN3) .......................................................................... 26 Chapter 3 Hardware Description ........................... 27 3.1 Microprocessors ............................................................................... 27 3.2 BIOS ................................................................................................... 27 3.3 System Memory ................................................................................. 27 3.4 I/O Port Address Map ........................................................................ 28 3.5 Interrupt Controller (IRQ) Map ......................................................... 30 3.6 Memory Map ...................................................................................... 36 Chapter 4 AMI BIOS Setup Utility .......................... 37 4.1 Starting ............................................................................................... 37 4.2 Navigation Keys ................................................................................ 37 4.3 Main Menu.......................................................................................... 39 4.4 Advanced Menu ................................................................................. 40 4.5 Chipset Menu ..................................................................................... 51 4.6 Security Menu .................................................................................... 54 4.7 Boot Menu.......................................................................................... 55 4.8 Save & Exit Menu .............................................................................. 56 Chapter 5 Drivers Installation................................ 59 5.1 Installing Chipset Driver ................................................................... 59 5.2 Installing Graphics Driver ................................................................. 62 5.3 Installing Ethernet Driver .................................................................. 66 5.4 Installing Audio Driver ...................................................................... 70 5.5 Installing Trusted Execution Engine................................................ 72 5.6 Installing Sideband Fabric Device ................................................... 75 Appendix A Watchdog Timer ................................... 79 About Watchdog Timer ................................................................................ 79 How to Use Watchdog Timer....................................................................... 79 Appendix B Digital I/O ............................................. 81 About Digital I/O ........................................................................................... 81 v Digital I/O Programming .............................................................................. 82 vi CAPA841/842 Capa Board Chapter 1 Introduction ® TM The CAPA841, a 3.5” board, supports Intel Atom E3845/E3827 processors. Meanwhile ® ® CAPA842, a 3.5’ board, supports Intel Celeron J1900/N2807 processors. Both of them deliver outstanding system performance through high-bandwidth interfaces, multiple I/O functions for interactive applications and various embedded computing solutions. The CAPA841/CAPA842 comes with one 204-pin unbuffered SO-DIMM socket for single channel DDR3L 1333/1066MHz memory, maximum memory capacity up to 8GB. There are two Gigabit/Fast Ethernet ports, one SATA port with transfer rate up to 3Gb/s, four USB 2.0 high speed compliant, and built-in HD audio codec that can achieve the best stability and reliability for industrial applications. Additionally, they provide you with unique embedded features, such as four serial ports (two RS-232/422/485 and two RS-232) and 3.5” form factor that applies an extensive array of PC peripherals. Introduction 1 CAPA841/842 Capa Board 1.1 Features ® 1.2 Specifications CPU TM CAPA841- Intel Atom quad core E3845 (1.91GHz) and dual core E3827 (1.75GHz) ® ® CAPA842 - Intel Celeron quad core J1900 (2GHz) and dual core N2807 (1.58GHz) 1 DDR3L SO-DIMM supports up to 8 GB memory capacity 4 USB 2.0 ports 4 COM ports 2 PCI-Express Mini Card +12V only DC-in supported Wide operating temperature supported CAPA841 ® TM - Intel Atom quad core E3845 1.86GHz. ® TM - Intel Atom dual core E3827 1.75GHz. CAPA842 ® ® - Intel Celeron quad core J1900 2GHz. ® ® - Intel Celeron dual core N2807 1.58GHz. Thermal Solution Passive. Operating Temperature o o CAPA841: -40°C~80°C or -20 C~80 C. o o CAPA842: -20 C~-70 C. BIOS American Megatrends Inc. UEFI (Unified Extensible Firmware Interface) BIOS. 16Mbit SPI Flash, DMI, Plug and Play. PXE Ethernet Boot ROM. System Memory One 204-pin unbuffered DDR3L SO-DIMM socket. Maximum up to 8GB DDR3L 1333/1066MHz memory. Onboard Multi I/O Controller: Nuvoton NCT6106D. Serial Ports: Two ports for RS-232/422/485 and two ports for RS-232. Serial ATA One SATA-300 connector. One CFast™ socket. mSATA supported (Optional). USB Interface Four USB ports with fuse protection and complies with USB Spec. Rev. 2.0. Display One 15-pin D-Sub as VGA connector. One 2x20-pin connector for 18/24-bit single/dual channel LVDS and one 8-pin inverter connector. LVDS resolution is up to 1920x1200 in 24-bit dual channels. One HDMI. 2 Introduction CAPA841/842 Capa Board Trusted Platform Module (TPM) Controller: ST ST33TPM12LPC via LPC bus interface. Complies with TPM1.2 main and PC client specification. Watchdog Timer 1~255 seconds or minutes; up to 255 levels. Ethernet ® Two RJ-45 LAN ports: Intel i210IT supports 1000/100/10Mbps Gigabit/Fast Ethernet with Wake-on-LAN and PXE Boot ROM. Audio HD audio compliant with Realtek ALC662. Speaker/line-out and line-in/MIC-in via box header connector. Expansion Interface One full-size PCI-Express Mini Card socket complies with PCI-Express Mini Card Spec. V1.2. One half-size PCI-Express Mini Card socket complies with PCI-Express Mini Card Spec. V1.2. Power Input One 2x2-pin connector +12V DC-in only AT auto power on function supported Power Management ACPI (Advanced Configuration and Power Interface). Form Factor 3.5” form factor. All specifications and images are subject to change without notice. Note 1.3 Utilities Supported Chipset and graphics driver Ethernet driver Audio driver Trusted Execution Engine Sideband Fabric Device Introduction 3 CAPA841/842 Capa Board This page is intentionally left blank. 4 Introduction CAPA841/842 Capa Board Chapter 2 Board and Pin Assignments 2.1 Board Dimensions and Fixing Holes Top View Board and Pin Assignments 5 CAPA841/842 Capa Board Bottom View Side View 6 Board and Pin Assignments CAPA841/842 Capa Board 2.2 Board Layout Top View Side View Board and Pin Assignments 7 CAPA841/842 Capa Board Bottom View 8 Board and Pin Assignments CAPA841/842 Capa Board 2.3 Jumper Settings Jumper is a small component consisting of jumper clip and jumper pins. Install jumper clip on 2 jumper pins to close. And remove jumper clip from 2 jumper pins to open. Below illustration shows how to set up jumper. Properly configure jumper settings on the CAPA841/842 to meet your application purpose. Below you can find a summary table of all jumpers and onboard default settings. Once the default jumper setting needs to be changed, please do it under power-off condition. Note Jumper JP1 JP2 JP3 JP4 JP6 JP7 JP8 JP10 JP11 JP12 Description Setting LVDS +3.3V/+5V Voltage Selection Default: +3.3V Audio Output Selection Default: Line-out LVDS Brightness Control Mode Setting Default: PWM Mode Restore BIOS Optimal Defaults Default: Normal Operation LVDS +12V Voltage Selection Default: None CN11 Pin 11: DCD COM4 Data/Power Selection Default: RS-232 Data CN11 Pin 18: RI CN11 Pin 1: DCD COM3 Data/Power Selection Default: RS-232 Data CN11 Pin 8: RI Auto Power On Default: Disable COM2 Pin 1: DCD COM2 Data/Power Selection Default: RS-232 Data COM2 Pin 8: RI COM1 Data/Power Selection Default: RS-232 Data Board and Pin Assignments COM1 Pin 1: DCD COM1 Pin 9: RI 1-2 Close 1-3, 2-4 Close 1-2 Close 1-2 Close None 3-5 Close 4-6 Close 3-5 Close 4-6 Close 1-2 Close 3-5 Close 4-6 Close 3-5 Close 4-6 Close 9 CAPA841/842 Capa Board 2.3.1 LVDS Voltage Selection (JP1 and JP6) The board supports voltage selection for flat panel displays. Use these jumpers to set LVDS connector (CN3) pin 1~6 VCCM to +3.3V, +5V or +12V. To prevent hardware damage, before connecting please make sure that input voltage of flat panel is correct. Function JP1 Setting +3.3V level (Default) +5V level 1-2 close 2-3 close Function JP6 Setting +12V level 1-2 close N/A 2-3 close 2.3.2 JP1 JP6 Audio Output Selection (JP2) Use this jumper to select line out or speaker out as source of audio output on audio connector. When speaker out is used, it delivers 1W/channel continuous at 8Ω loads. Function Setting Line out (Default) Speaker out 1-3, 2-4 close 3-5, 4-6 close 2.3.3 LVDS Brightness Control Mode Setting (JP3) The JP3 enables you to select PWM or voltage control mode for inverter connector (CN2). These two control modes are for adjusting the brightness of LVDS panel. Function Setting PWM mode (Default) Voltage mode 1-2 close 3-4 close 2.3.4 Restore BIOS Optimal Defaults (JP4) Put jumper clip to pin 2-3 for a few seconds then move it back to pin 1-2. Doing this procedure can restore BIOS optimal defaults. 10 Function Setting Normal (Default) 1-2 close Restore BIOS optimal defaults 2-3 close Board and Pin Assignments CAPA841/842 Capa Board 2.3.5 COM4 Data/Power Selection (JP7) The COM4 port has +5V level power capability on DCD and +12V level on RI by setting this jumper. Function Setting Power: Set CN11 pin 11 to +5V level Data: Set CN11 pin 11 to DCD (Default) Power: Set CN11 pin 18 to +12V level Data: Set CN11 pin 18 to RI (Default) 1-3 close 3-5 close 2-4 close 4-6 close 2.3.6 COM3 Data/Power Selection (JP8) The COM3 port has +5V level power capability on DCD and +12V level on RI by setting this jumper. Function Setting Power: Set CN11 pin 1 to +5V level Data: Set CN11 pin 1 to DCD (Default) Power: Set CN11 pin 8 to +12V level Data: Set CN11 pin 8 to RI (Default) 1-3 close 3-5 close 2-4 close 4-6 close 2.3.7 Auto Power On (JP10) If JP10 is enabled for AC power input, the system will be automatically power on without pressing soft power button. If JP10 is disabled for AC power input, it is necessary to manually press soft power button to power on the system. Function Setting Disable auto power on (Default) Enable auto power on 1-2 close 2-3 close This function is similar to the feature of power on after power failure, which is controlled by hardware circuitry instead of BIOS. Note 2.3.8 COM2 Data/Power Selection (JP11) The COM2 port has +5V level power capability on DCD and +12V level on RI by setting this jumper. When this port is set to +5V or +12V level, please make sure its communication mode is RS-232. You can change the communication mode (RS-232/422/485) via BIOS setting, see section 4.4. Function Setting Power: Set COM2 pin 1 to +5V level Data: Set COM2 pin 1 to DCD (Default) Power: Set COM2 pin 8 to +12V level Data: Set COM2 pin 8 to RI (Default) 1-3 close 3-5 close 2-4 close 4-6 close Board and Pin Assignments 11 CAPA841/842 Capa Board 2.3.9 COM1 Data/Power Selection (JP12) The COM1 port has +5V level power capability on DCD and +12V level on RI by setting this jumper. When this port is set to +5V or +12V level, please make sure its communication mode is RS-232. You can change the communication mode (RS-232/422/485) via BIOS setting, see section 4.4. 12 Function Setting Power: Set COM1 pin 1 to +5V level Data: Set COM1 pin 1 to DCD (Default) Power: Set COM1 pin 9 to +12V level Data: Set COM1 pin 9 to RI (Default) 1-3 close 3-5 close 2-4 close 4-6 close Board and Pin Assignments CAPA841/842 Capa Board 2.4 Connectors Signals go to other parts of the system through connectors. Loose or improper connection might cause problems, please make sure all connectors are properly and firmly connected. Here is a summary table of connectors on the hardware. Connector Description CN1 Front Panel Connector CN2 Inverter Connector CN3 LVDS Connector CN4 Audio Connector CN5 Digital I/O Port Connector CN7 Fan Connector CN8 SMBus Connector CN9 USB Wafer Port 2 and 3 CN10 HDMI Connector CN11 COM3 and COM4 Connector CN12 SATA Power Connector CN14 VGA Connector ATX1 Power Connector SATA1 SATA Connector USB1 USB Port 0 and 1 SCFAST1 CFast LAN1~2 Ethernet Port 1~Port 2 COM1 COM1 Connector COM2 COM2 Connector BAT1 CMOS Battery Connector SCN1 Half-size PCI-Express Mini Card Connector SCN2 Full-size PCI-Express Mini Card Connector SCN3 SIM Card Slot SSODIMM1 DDR3L SO-DIMM Connector Board and Pin Assignments TM Socket 13 CAPA841/842 Capa Board 2.4.1 Front Panel Connector (CN1) Pin Signal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 PWRLED+ EXT SPKN.C. Buzzer PWRLEDN.C. N.C. EXT SPK+ PWRSWPWRSW+ HW RSTHW RST+ HDDLEDHDDLED+ Power LED Pin 1 connects anode(+) of LED and pin 5 connects cathode(-) of LED. The power LED lights up when the system is powered on. External Speaker and Internal Buzzer Pin 2, 4, 6 and 8 connect the case-mounted speaker unit or internal buzzer. While connecting the CPU board to an internal buzzer, please set pin 2 and 4 closed; while connecting to an external speaker, you need to set pins 2 and 4 opened and connect the speaker cable to pin 8(+) and pin 2(-). Power On/Off Button Pin 9 and 10 connect the power button on front panel to the CPU board, which allows users to turn on or off power supply. System Reset Switch Pin 11 and 12 connect the case-mounted reset switch that reboots your computer without turning off the power switch. It is a better way to reboot your system for a longer life of system power supply. HDD Activity LED This connection is linked to hard drive activity LED on the control panel. LED flashes when HDD is being accessed. Pin 13 and 14 connect the hard disk drive to the front panel HDD LED, pin 13 is assigned as cathode(-) and pin 14 is assigned as anode(+). 14 Board and Pin Assignments CAPA841/842 Capa Board 2.4.2 Inverter Connector (CN2) This is a DF13-8S-1.25C 8-pin connector for inverter. We strongly recommend you to use the matching DF13-8S-1.25C connector to avoid malfunction. Pin Signal 1 2 3 4 5 6 7 8 VBL1 (+12V level) VBL1 (+12V level) VBL2 (+5V level) VBL_ENABLE GND GND GND VBL Brightness Control 2.4.3 8 1 LVDS Connector (CN3) This board has a 2x20-pin connector for LVDS LCD interface. It is strongly recommended to use the matching JST SHDR-40VS-B connector for LVDS interface. Pin 1~6 VCCM can be set to +3.3V, +5V or +12V by setting JP1 or JP6 (see section 2.3.1). 18-bit single channel Pin Signal Pin Signal 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 VCCM VCCM VCCM N.C. GND N.C. N.C. GND N.C. N.C. GND Channel A D0Channel A D0+ GND Channel A D1Channel A D1+ GND Channel A D2Channel A D2+ GND 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 VCCM VCCM VCCM N.C. GND N.C. N.C. GND N.C. N.C. GND N.C. N.C. GND N.C. N.C. GND Channel A CLKChannel A CLK+ GND Board and Pin Assignments 15 CAPA841/842 Capa Board 24-bit single channel 18-bit dual channel Pin Signal Pin Signal Pin Signal Pin Signal 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 VCCM VCCM VCCM N.C. GND N.C. N.C. GND N.C. N.C. GND Channel A D0Channel A D0+ GND Channel A D1Channel A D1+ GND Channel A D2Channel A D2+ GND VCCM VCCM VCCM N.C. GND N.C. N.C. GND N.C. N.C. GND N.C. N.C. GND Channel A D3Channel A D3+ GND Channel A CLKChannel A CLK+ GND VCCM VCCM VCCM N.C. GND N.C. N.C. GND Channel B CLKChannel B CLK+ GND Channel A D0Channel A D0+ GND Channel A D1Channel A D1+ GND Channel A D2Channel A D2+ GND VCCM VCCM VCCM N.C. GND Channel B D0Channel B D0+ GND Channel B D1Channel B D1+ GND Channel B D2Channel B D2+ GND N.C. N.C. GND Channel A CLKChannel A CLK+ GND 24-bit dual channel Pin Signal Pin Signal 1 VCCM 2 VCCM 3 VCCM 4 VCCM 5 VCCM 6 VCCM 7 N.C. 8 N.C. 9 GND 10 GND 11 Channel B D3- 12 Channel B D0- 13 Channel B D3+ 14 Channel B D0+ 15 GND 16 GND 17 Channel B CLK- 18 Channel B D1- 19 Channel B CLK+ 20 Channel B D1+ 21 GND 22 GND 23 Channel A D0- 24 Channel B D2- 25 Channel A D0+ 26 Channel B D2+ 27 GND 28 GND 29 Channel A D1- 30 Channel A D3- 31 Channel A D1+ 32 Channel A D3+ 33 GND 34 GND 35 Channel A D2- 36 Channel A CLK- 37 Channel A D2+ 38 Channel A CLK+ 39 GND 40 GND 16 Board and Pin Assignments CAPA841/842 Capa Board 2.4.4 Audio Connector (CN4) Pin 7 and pin 9 of connector CN4 can be set to different audio source by setting JP2 (see section 2.3.2). Pin Signal Pin Signal 1 3 5 7 9 MIC_IN LINE_IN_L LINE_IN_R AUDIO_OUT_L AUDIO_OUT_R 2 4 6 8 10 GND GND GND GND GND 2.4.5 Digital I/O Port Connector (CN5) The board is equipped with an 8-channel (3 inputs and 5 outputs) digital I/O connector that meets requirements for a system customary automation control. The digital I/O can be configured to control cash drawers and sense warning signals from an Uninterrupted Power System (UPS), or perform store security control. You may use software programming to control these digital signals. Pin Signal Pin Signal 1 3 5 7 9 Digital Input 0 Digital Input 1 Digital Input 2 GND GND 2 4 6 8 10 Digital Output 0 Digital Output 1 Digital Output 2 Digital Output 3 Digital Output 4 2.4.6 Fan Connector (CN7) A fan interface is available through this connector. You can find fan speed within BIOS Setup Utility if fan is installed. For further information, see BIOS Setup Utility: Advanced\H/W Monitor\PC Health Status (see section 4.4). Pin Signal 1 2 3 GND +12V level Fan speed feedback 2.4.7 SMBus Connector (CN8) This connector is for SMBus interface. The SMBus (System Management Bus) is a simple 2-wire bus for the purpose of lightweight communication. Pin Signal 1 2 3 CLK DATA GND Board and Pin Assignments 17 CAPA841/842 Capa Board 2.4.8 USB Wafer Connector (CN9) This 2x5 pin wafer is a Universal Serial Bus (USB) connector for installing versatile USB 2.0 compliant interface peripherals. The CN9 carries USB port 2 and 3. Pin Signal Pin Signal 1 3 5 7 9 2.4.9 USB VCC (+5V level) USB #2_DUSB #2_D+ GND GND 2 4 6 8 10 USB VCC (+5V level) USB #3_DUSB #3_D+ GND GND HDMI Connector (CN10) The HDMI (High-Definition Multimedia Interface) is a compact digital interface which is capable of transmitting high-definition video and high-resolution audio over a single cable. Its interface is available through connector CN10. 18 Pin Signal Pin Signal 1 3 5 7 9 11 13 15 17 19 HDMI OUT_DATA2+ HDMI OUT_DATA2GND HDMI OUT_DATA0+ HDMI OUT_DATA0GND CEC HDMI OUT_SCL GND HDMI_HTPLG 2 4 6 8 10 12 14 16 18 GND HDMI OUT_DATA1+ HDMI OUT_DATA1GND HDMI OUT_Clock+ HDMI OUT_ClockN.C. HDMI OUT_SDA +5V Board and Pin Assignments CAPA841/842 Capa Board 2.4.10 COM3 and COM4 Connector (CN11) Both COM3 and COM4 ports have +5V level power capability on DCD and 12V level on RI by setting JP8 and JP7, respectively (see section 2.3.6 and 2.3.5). The pin assignments are listed in table below. Pin Signal Pin Signal 1 3 5 7 9 11 13 15 17 19 DCD3 RXD3 TXD3 DTR3 GND DCD4 RXD4 TXD4 DTR4 GND 2 4 6 8 10 12 14 16 18 20 DSR3 RTS3 CTS3 RI3 N.C. DSR4 RTS4 CTS4 RI4 N.C. 2.4.11 SATA Power Connector (CN12) Use CN12 for interfacing to SATA 2.5" HDD power supply. Pin Signal 1 2 3 4 +12V level GND GND +5V level 2.4.12 VGA Connector (CN14) This is a 15-pin D-Sub connector which is commonly used for VGA display. This VGA interface configuration can be configured via software utility. Pin Signal Pin Signal 1 3 5 7 9 11 13 15 Red Blue GND GND VCC N.C. Horizontal Sync DDC CLK 2 4 6 8 10 12 14 Green N.C. DETECT GND GND DDC DATA Vertical Sync Board and Pin Assignments 19 CAPA841/842 Capa Board 2.4.13 Power Connector (ATX1) Steady and sufficient power can be supplied to all components on the board by connecting the power connector. Please make sure all components and devices are properly installed before connecting the power connector. The ATX1 is a 4-pin power supply interface. External power supply plug fits into ATX1 in only one orientation. Properly press down power supply plug until it completely and firmly fits into this connector. Loose connection may cause system instability. Pin Signal 1 2 3 4 GND GND +12V +12V 2.4.14 SATA Connector (SATA1) This Serial Advanced Technology Attachment (Serial ATA or SATA) connector is for high-speed SATA interface. It is a computer bus interface for connecting to devices such as hard disk drive. 20 Pin Signal 1 2 3 4 5 6 7 GND SATA_TX+ SATA_TXGND SATA_RXSATA_RX+ GND Board and Pin Assignments CAPA841/842 Capa Board 2.4.15 USB Port (USB1) The USB1 is a Universal Serial Bus (compliant with USB 2.0 (480Mbps)) connector on the rear I/O. It is commonly used for installing USB peripherals such as keyboard, mouse, scanner, etc. Pin 1 2 3 4 Signal USB VCC (+5V level) USB #0_DUSB #0_D+ GND 2.4.16 Pin 5 6 7 8 Signal USB VCC (+5V level) USB #1_DUSB #1_D+ GND 5 6 7 8 1 2 3 4 CFast™ Socket (SCFAST1) TM TM The board is equipped with a CFast socket on the bottom side to support a CFast card which is based on the SATA bus. The socket is specially designed to avoid incorrect TM TM installation of the CFast card. When installing or removing the CFast card, please TM make sure the system power is off. The CFast card by default identifies itself as C: or D: drive in your PC system. Pin Signal Pin Signal 1 2 3 4 5 6 7 8 9 10 11 12 GND SATA_TX+ SATA_TXGND SATA_RXSATA_RX+ GND N.C GND N.C N.C N.C 13 14 15 16 17 18 19 20 21 22 23 24 N.C GND N.C CFAST_LED# N.C N.C N.C +3.3V Level +3.3V Level GND GND N.C Board and Pin Assignments 21 CAPA841/842 Capa Board 2.4.17 Ethernet Ports (LAN1 and LAN2) The board has two RJ-45 connectors: LAN1 and LAN2. Ethernet connection can be established by plugging one end of the ethernet cable into this RJ-45 connector and the other end (phone jack) to a 1000/100/10-Base-T hub. Pin L1 L2 L3 L4 A B Signal Pin MDI0+ L5 MDI0L6 MDI1+ L7 MDI1L8 Active LED (Yellow) 100 LAN LED (Green) (Orange) 2.4.18 Signal MDI2+ MDI2MDI3+ MDI3/ 1000 LAN LED A B L8 L7 L6 L5 L4 L3 L2 L1 A B COM1 Connector (COM1) This is a standard DB-9 connector. It is equipped with +5V level power capability on DCD and +12V level on RI by setting JP12 (see section 2.3.9). The pin assignments of RS-232/RS-422/RS-485 are listed in table below. If you need COM1 port to support RS-422 or RS-485, please refer to BIOS setting in section 4.4. 22 Pin RS-232 RS-422 RS-485 1 2 3 4 5 6 7 8 9 DCD RXD TXD DTR GND DSR RTS CTS RI TXTX+ RX+ RXNo use No use No use No use No use DataData+ No use No use No use No use No use No use No use Board and Pin Assignments CAPA841/842 Capa Board 2.4.19 COM2 Connector (COM2) This connector is equipped with +5V level power capability on DCD and +12V level on RI by setting JP11 (see section 2.3.8). The pin assignments of RS-232/RS-422/RS-485 are listed in table below. If you need COM2 port to support RS-422 or RS-485, please refer to BIOS setting in section 4.4. Pin RS-232 RS-422 RS-485 1 2 3 4 5 6 7 8 9 10 DCD DSR RXD RTS TXD CTS DTR RI GND No use TXNo use TX+ No use RX+ No use RXNo use No use No use DataNo use Data+ No use No use No use No use No use No use No use 2.4.20 CMOS Battery Connector (BAT1) This connector is for CMOS battery interface. Pin Signal 1 2 +3.3V GND Board and Pin Assignments 1 1 23 CAPA841/842 Capa Board 2.4.21 Half-size PCI-Express Mini Card Connector (SCN1) The SCN1 is a half-size PCI-Express Mini Card connector. It supports the PCI-Express Mini Cards which are applied to either PCI-Express x1 or USB. It complies with PCI-Express Mini Card Spec. V1.2. 24 Pin Signal Pin Signal 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 WAKE# No use No use CLKREQ# GND REFCLKREFCLK+ GND No use No use GND PE_RXN3 PE_RXP3 GND GND PE_TXN3 PE_TXP3 GND GND +3.3VSB +3.3VSB GND No use No use No use No use 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 +3.3VSB GND +1.5V No use No use No use No use No use GND W_DISABLE# PERST# +3.3VSB GND +1.5V SMB_CLK SMB_DATA GND USB_D8USB_D8+ GND No use No use No use +1.5V GND +3.3VSB Board and Pin Assignments CAPA841/842 Capa Board 2.4.22 Full-size PCI-Express Mini Card Connector (SCN2) This is a PCI-Express Mini Card connector on the bottom side applying to either PCI-Express or USB 2.0 or SATA (mSATA). It complies with PCI-Express Mini Card Spec. V1.2. It can also support mSATA cards. Please refer to BIOS setting in section 4.4 to enable or disable mSATA support Pin Signal Pin Signal 1 3 5 7 9 11 13 15 17 19 21 WAKE# No use No use CLKREQ# GND REFCLKREFCLK+ GND No use No use GND PE_RXN3/ SATA_RXP PE_RXP3/ SATA_RXN GND GND PE_TXN3/ SATA_TXN PE_TXP3/ SATA_TXP GND GND +3.3VSB +3.3VSB GND No use No use No use No use 2 4 6 8 10 12 14 16 18 20 22 24 +3.3VSB GND +1.5V No use No use No use No use No use GND W_DISABLE# PERST# +3.3VSB 26 GND 28 30 32 +1.5V SMB_CLK SMB_DATA 34 GND 36 38 40 42 44 46 48 50 52 USB_D8USB_D8+ GND No use No use No use +1.5V GND +3.3VSB 23 25 27 29 31 33 35 37 39 41 43 45 47 49 51 Board and Pin Assignments 25 CAPA841/842 Capa Board 2.4.23 SIM Card Socket (SCN3) This board has SCN3 socket on the bottom side for inserting SIM Card. In order to work properly, the SIM Card must be used together with 3G module which is inserted to SCN1 or SCN2. It is mainly used in 3G wireless network application. 26 Pin Signal 1 2 3 4 5 6 7 8 PWR RST CLK NC GND VPP I/O NC Board and Pin Assignments CAPA841/842 Capa Board Chapter 3 Hardware Description 3.1 Microprocessors ® TM ® The CAPA841 supports Intel Atom E3845/E3827 processors and CAPA842 supports Intel ® ® Celeron J1900/N2807 processors, which enable your system to operate under Windows 7 ® and Windows 8 environments. The system performance depends on the microprocessor. Make sure all correct settings are arranged for your installed microprocessor to prevent the CPU from damages. 3.2 BIOS The CAPA841/842 uses AMI Plug and Play BIOS with a single 16Mbit SPI Flash. 3.3 System Memory The CAPA841/842 supports one 204-pin DDR3L SO-DIMM socket for a maximum memory of 8GB DDR3L SDRAMs. The memory module comes in sizes of 1GB, 2GB, 4GB and 8GB. Hardware Description 27 CAPA841/842 Capa Board 3.4 I/O Port Address Map Total 1KB port addresses are available for assigning to other devices via I/O expansion cards. 28 Hardware Description CAPA841/842 Capa Board Hardware Description 29 CAPA841/842 Capa Board 3.5 Interrupt Controller (IRQ) Map The interrupt controller (IRQ) mapping list is shown as follows: 30 Hardware Description CAPA841/842 Capa Board Hardware Description 31 CAPA841/842 Capa Board 32 Hardware Description CAPA841/842 Capa Board Hardware Description 33 CAPA841/842 Capa Board 34 Hardware Description CAPA841/842 Capa Board Hardware Description 35 CAPA841/842 Capa Board 3.6 Memory Map The memory mapping list is shown as follows: 36 Hardware Description CAPA841/842 Capa Board Chapter 4 AMI BIOS Setup Utility The AMI UEFI BIOS provides users with a built-in setup program to modify basic system configuration. All configured parameters are stored in a flash chip to save the setup information whenever the power is turned off. This chapter provides users with detailed description about how to set up basic system configuration through the AMI BIOS setup utility. 4.1 Starting To enter the setup screens, follow the steps below: 1. 2. Turn on the computer and press the <Del> key immediately. After you press the <Del> key, the main BIOS setup menu displays. You can access the other setup screens from the main BIOS setup menu, such as the Advanced and Chipset menus. If your computer cannot boot after making and saving system changes with BIOS setup, you can restore BIOS optimal defaults by setting JP4 (see section 2.3.4). Note It is strongly recommended that you should avoid changing the chipset’s defaults. Both AMI and your system manufacturer have carefully set up these defaults that provide the best performance and reliability. 4.2 Navigation Keys The BIOS setup/utility uses a key-based navigation system called hot keys. Most of the BIOS setup utility hot keys can be used at any time during the setup navigation process. These keys include <F1>, <F2>, <Enter>, <ESC>, <Arrow> keys, and so on. Some of the navigation keys differ from one screen to another. Note AMI BIOS Setup Utility 37 CAPA841/842 Capa Board Hot Keys Description Left/Right The Left and Right <Arrow> keys allow you to select a setup screen. Up/Down The Up and Down <Arrow> keys allow you to select a setup screen or sub-screen. + Plus/Minus The Plus and Minus <Arrow> keys allow you to change the field value of a particular setup item. Tab The <Tab> key allows you to select setup fields. F1 The <F1> key allows you to display the General Help screen. F2 The <F2> key allows you to Load Previous Values. F3 The <F3> key allows you to Load Optimized Defaults. F4 The <F4> key allows you to save any changes you have made and exit Setup. Press the <F4> key to save your changes. Esc The <Esc> key allows you to discard any changes you have made and exit the Setup. Press the <Esc> key to exit the setup without saving your changes. Enter The <Enter> key allows you to display or change the setup option listed for a particular setup item. The <Enter> key can also allow you to display the setup sub- screens. 38 AMI BIOS Setup Utility CAPA841/842 Capa Board 4.3 Main Menu When you first enter the setup utility, you will enter the Main setup screen. You can always return to the Main setup screen by selecting the Main tab. System Time/Date can be set up as described below. The Main BIOS setup screen is shown below. BIOS/Memory Information Display the auto-detected BIOS/memory information. System Language Choose the system default language. System Date/Time Use this option to change the system time and date. Highlight System Time or System Date using the <Arrow> keys. Enter new values through the keyboard. Press the <Tab> key or the <Arrow> keys to move between fields. The date must be entered in MM/DD/YY format. The time is entered in HH:MM:SS format. Access Level Display the access level of current user. AMI BIOS Setup Utility 39 CAPA841/842 Capa Board 4.4 Advanced Menu The Advanced menu also allows users to set configuration of the CPU and other system devices. You can select any of the items in the left frame of the screen to go to the sub menus: ► ► ► ► ► ► ► ACPI Settings NCT6106D Super IO Configuration NCT6106D HW Monitor CPU Configuration IDE Configuration Trusted Computing USB Configuration For items marked with “”, please press <Enter> for more options. 40 AMI BIOS Setup Utility CAPA841/842 Capa Board ACPI Settings ACPI Sleep State When the sleep button is pressed, the system will be in the ACPI sleep state. The default is S3 (Suspend to RAM). AMI BIOS Setup Utility 41 CAPA841/842 Capa Board NCT6106D Super IO Configuration You can use this screen to select options for the Super IO Configuration, and change the value of the selected option. A description of the selected item appears on the right side of the screen. For items marked with “”, please press <Enter> for more options. Serial Port 1~4 (COM1~4) Configuration Use these items to set parameters related to serial port 1~4. 42 AMI BIOS Setup Utility CAPA841/842 Capa Board Serial Port 1 (COM1) Configuration Serial Port Enable or disable serial port 1. The optimal setting for base I/O address is 3F8h and for interrupt request address is IRQ4. COM Port Type Use this option to set RS-232/RS-422/RS-485 mode. AMI BIOS Setup Utility 43 CAPA841/842 Capa Board Serial Port 2 (COM2) Configuration Serial Port Enable or disable serial port 2. The optimal setting for base I/O address is 2F8h and for interrupt request address is IRQ3. COM Port Type Use this option to set RS-232/RS-422/RS-485 mode. 44 AMI BIOS Setup Utility CAPA841/842 Capa Board NCT6106D HW Monitor This screen monitors hardware health status. This screen displays the temperature of system and CPU, system voltages (VCORE, +3.3V, +12V and +5V). AMI BIOS Setup Utility 45 CAPA841/842 Capa Board CPU Configuration This screen shows the CPU Configuration. Socket 0 CPU Information This item is for socket specific CPU information. Intel Virtualization Technology Allow a hardware platform to run multiple operating systems separately and simultaneously, enabling one system to virtually function as several systems. 46 AMI BIOS Setup Utility CAPA841/842 Capa Board IDE Configuration In the IDE Configuration menu, you can see the currently installed hardware in the SATA ports. During system boot up, the BIOS automatically detects the presence of SATA devices. Serial-ATA (SATA) Enable or disable the SATA Controller feature. The default is Enabled. SATA Mode Selection Determine how SATA controller(s) operate. Operation mode options are IDE Mode and AHCI (Advanced Host Controller Interface) Mode. The default is AHCI Mode. Serial-ATA Port 0 Enable or disable the onboard SATA port 0. AMI BIOS Setup Utility 47 CAPA841/842 Capa Board Serial-ATA Port 1 Enable or disable the onboard SATA port 1. SATA Switch This option appears only after SATA Port 1 is enabled. The default is CFast. If you intend to insert mSATA card to SCN2 (see section 2.4.22), please change setting to mSATA. 48 AMI BIOS Setup Utility CAPA841/842 Capa Board Trusted Computing This screen provides function for specifying the TPM settings. Security Device Support Enable or disable BIOS support for security device. The default setting is Disabled. TPM State Once the Security Device Support is Enabled, TPM can be used by the operating system. Current Status Information Display current TPM status information. AMI BIOS Setup Utility 49 CAPA841/842 Capa Board USB Configuration USB Devices Display all detected USB devices. Legacy USB Support Use this item to enable or disable support for USB device on legacy operating system. The default setting is Enabled. Auto option disables legacy support if no USB devices are connected. Disable option will keep USB devices available only for EFI applications. 50 AMI BIOS Setup Utility CAPA841/842 Capa Board 4.5 Chipset Menu The Chipset menu allows users to change the advanced chipset settings. You can select any of the items in the left frame of the screen to go to the sub menus: ► North Bridge ► South Bridge For items marked with “”, please press <Enter> for more options. AMI BIOS Setup Utility 51 CAPA841/842 Capa Board North Bridge IGD - LCD Control LVDS Panel Type Select LVDS panel resolution. 52 AMI BIOS Setup Utility CAPA841/842 Capa Board South Bridge This screen allows users to configure parameters of South Bridge chipset. Audio Controller Control detection of the Azalia device. Disabled - Azalia will be unconditionally disabled. Enabled - Azalia will be unconditionally enabled. AMI BIOS Setup Utility 53 CAPA841/842 Capa Board 4.6 Security Menu The Security menu allows users to change the security settings for the system. Administrator Password This item indicates whether an administrator password has been set (installed or uninstalled). User Password This item indicates whether an user password has been set (installed or uninstalled). 54 AMI BIOS Setup Utility CAPA841/842 Capa Board 4.7 Boot Menu The Boot menu allows users to change boot options of the system. Setup Prompt Timeout Number of seconds to wait for setup activation key. 65535(0xFFFF) means indefinite waiting. Bootup NumLock State Use this item to select the power-on state for the keyboard NumLock. Quiet Boot Select to display either POST output messages or a splash screen during boot-up. Launch PXE OpROM Use this item to enable or disable the boot ROM function of the onboard LAN chip when the system boots up. Boot Option Priorities These are settings for boot priority. Specify the boot device priority sequence from the available devices. AMI BIOS Setup Utility 55 CAPA841/842 Capa Board 4.8 Save & Exit Menu The Save & Exit menu allows users to load your system configuration with optimal or fail-safe default values. Save Changes and Exit When you have completed the system configuration changes, select this option to leave Setup and return to Main Menu. Select Save Changes and Exit from the Save & Exit menu and press <Enter>. Select Yes to save changes and exit. Discard Changes and Exit Select this option to quit Setup without making any permanent changes to the system configuration and return to Main Menu. Select Discard Changes and Exit from the Save & Exit menu and press <Enter>. Select Yes to discard changes and exit. Save Changes and Reset When you have completed the system configuration changes, select this option to leave Setup and reboot the computer so the new system configuration parameters can take effect. Select Save Changes and Reset from the Save & Exit menu and press <Enter>. Select Yes to save changes and reset. Discard Changes and Reset Select this option to quit Setup without making any permanent changes to the system configuration and reboot the computer. Select Discard Changes and Reset from the Save & Exit menu and press <Enter>. Select Yes to discard changes and reset. Save Changes When you have completed the system configuration changes, select this option to save changes. Select Save Changes from the Save & Exit menu and press <Enter>. Select Yes to save changes. 56 AMI BIOS Setup Utility CAPA841/842 Capa Board Discard Changes Select this option to quit Setup without making any permanent changes to the system configuration. Select Discard Changes from the Save & Exit menu and press <Enter>. Select Yes to discard changes. Restore Defaults It automatically sets all Setup options to a complete set of default settings when you select this option. Select Restore Defaults from the Save & Exit menu and press <Enter>. Save as User Defaults Select this option to save system configuration changes done so far as User Defaults. Select Save as User Defaults from the Save & Exit menu and press <Enter>. Restore User Defaults It automatically sets all Setup options to a complete set of User Defaults when you select this option. Select Restore User Defaults from the Save & Exit menu and press <Enter>. Boot Override Select a drive to immediately boot that device regardless of the current boot order. Launch EFI Shell from filesystem device Attempt to launch EFI Shell application (Shellx64.efi) from one of the available filesystem devices. AMI BIOS Setup Utility 57 CAPA841/842 Capa Board This page is intentionally left blank. 58 AMI BIOS Setup Utility CAPA841/842 Capa Board Chapter 5 Drivers Installation The device drivers are located on the product information CD that comes with the CAPA841/842 Series package. The auto-run function of drivers will guide you to install the ® utilities and device drivers under Windows system. You can follow the onscreen instructions to install these devices: Chipset Graphics Ethernet Audio ® Trusted Execution Engine for Windows 8 ® Sideband Fabric Device for Windows 8 5.1 1. Installing Chipset Driver Run setup program from driver directory in product information CD. Click “Next” to next step. Drivers Installation 59 CAPA841/842 Capa Board 2. When the following License Agreement screen appears, please click “Yes” to next step. 3. A Readme File Information screen appears to show you the system requirements and installation information. Click “Next” to next step. 60 Drivers Installation CAPA841/842 Capa Board 4. Please wait while setup processes the following operations. 5. You are suggested to select “Yes, I want to restart this computer now”. Click “Finish” to complete the setup process and reboot. Drivers Installation 61 CAPA841/842 Capa Board 5.2 Installing Graphics Driver 1. Run setup program from driver directory in product information CD. Click “Next” to start the installation. 62 Drivers Installation CAPA841/842 Capa Board ® 2. When Intel License Agreement screen appears, please click “Yes” to next step. 3. A Readme File Information screen appears to show you the system requirements and installation information. Click “Next” to next step. Drivers Installation 63 CAPA841/842 Capa Board 4. Please wait while setup processes the following operations. 5. When the following screen appears, please click “Next”. 64 Drivers Installation CAPA841/842 Capa Board 6. You are suggested to select “Yes, I want to restart this computer now”. Click “Finish” to complete the setup process and reboot. Drivers Installation 65 CAPA841/842 Capa Board 5.3 Installing Ethernet Driver 1. Run setup program from driver directory in product information CD. When the following screen appears, please wait while setup prepares the install wizard. 66 Drivers Installation CAPA841/842 Capa Board 2. Click “Next” to continue. 3. When Intel License Agreement screen appears, read it carefully. You are suggested to select “I accept the terms in the license agreement”. Click “Next” to continue. ® Drivers Installation 67 CAPA841/842 Capa Board 4. When the following screen appears, please select the program features you want to install. Click “Next” to continue. 5. Now install wizard is ready. Click “Install” to begin installation. 68 Drivers Installation CAPA841/842 Capa Board 6. Please wait while setup processes the following operations. 7. When driver installation is complete, the following screen appears. Click “Finish” to exit. Drivers Installation 69 CAPA841/842 Capa Board 5.4 Installing Audio Driver 1. Run setup program from driver directory in product information CD. Click “Next” to continue. 70 Drivers Installation CAPA841/842 Capa Board 2. You are suggested to select “Yes, I want to restart my computer now”. Click “Finish” to complete setup and reboot. Drivers Installation 71 CAPA841/842 Capa Board 5.5 Installing Trusted Execution Engine 1. Run setup program from driver directory in product information CD. When the following screen appears, click “Next” to continue. 72 Drivers Installation CAPA841/842 Capa Board ® 2. When Intel License Agreement screen appears, read it carefully. You are suggested to select “I accept the terms in the License Agreement”. Click “Next” to continue. 3. Now install wizard is ready. Click “Next” to begin installation. Drivers Installation 73 CAPA841/842 Capa Board 4. Please wait while setup processes the following operations. 5. When installation is complete, the following screen appears. Click “Finish” to exit. 74 Drivers Installation CAPA841/842 Capa Board 5.6 1. Installing Sideband Fabric Device Run setup program from driver directory in product information CD. When the following screen appears, click “Next” to continue. Drivers Installation 75 CAPA841/842 Capa Board ® 2. When Intel License Agreement screen appears, read it carefully. You are suggested to select “I accept the terms in the License Agreement”. Click “Yes” to continue. 3. Please wait while setup processes the following operations. 76 Drivers Installation CAPA841/842 Capa Board 4. When installation is complete, you are suggested to select “Yes, I want to restart my computer now”. Click “Finish” to complete setup and reboot. Drivers Installation 77 CAPA841/842 Capa Board This page is intentionally left blank. 78 Drivers Installation CAPA841/842 Capa Board Appendix A Watchdog Timer About Watchdog Timer After the system stops working for a while, it can be auto-reset by the watchdog timer. The integrated watchdog timer can be set up in the system reset mode by program. How to Use Watchdog Timer The following example enables configuration using debug tool. Enable WDT Enable configuration: O 2E 87 O 2E 87 ; Un-lock super I/O Select logic device: O 2E 07 O 2F 08 WDT device enable: O 2E 30 O 2F 01 Set timer unit: O 2E F0 O 2F 00 ; (00: Sec; 08:Minute) Set base timer: O 2E F1 O 2F 0A ; Set reset time (where 0A (hex) = 10sec) Disable WDT Enable configuration: O 2E 87 O 2E 87 ; Un-lock super I/O Select logic device: O 2E 07 O 2F 08 WDT device disable: O 2E 30 O 2F 00 Watchdog Timer 79 CAPA841/842 Capa Board This page is intentionally left blank. 80 Watchdog Timer CAPA841/842 Capa Board Appendix B Digital I/O About Digital I/O The onboard digital I/O has 8 bits (DIO0~7). Each bit can be set to function as input or output by software programming. In default, all pins are pulled high with +5V level (according to main power). The BIOS default settings are 3 inputs and 5 outputs where all of these pins are set to 1. CN5 Digital I/O Pin Signal Pin Signal 1 3 5 7 9 DI0 (Bit0) DI1 (Bit1) DI2 (Bit2) GND GND 2 4 6 8 10 DO0 (Bit 3) DO1 (Bit 4) DO2 (Bit 5) DO3 (Bit 6) DO4 (Bit 7) 81 CAPA841/842 Capa Board Digital I/O Programming The following example enables configuration using debug tool. Start digital I/O programming Enable configuration: O 2E 87 O 2E 87 ; Un-lock super I/O Select logic device: O 2E 07 O 2F 07 Set multi-function selection: O 2E 1C O 2F 1C ; Open GPIO2 and close UART Set GPIO2 I/O register: O 2E E8 O 2F 00 ; 00: Programmed to function as output port ; FF: Programmed to function as input port Set GPIO2 data register: ; Set digital output pins value O 2E E9 O 2F 00 ; 00: Set digital output to low level ; FF: Set digital output to high level Digital Input: ; Read digital input data O 2E E9 i 2F ; FF: Digital input data is high (default state) 82 Digital I/O