CAPA840 Intel® AtomTM Processor E3845/E3827 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 2015 Axiomtek Co., Ltd. All Rights Reserved April 2015, Version A1 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 2.4 Connectors ........................................................................................ 12 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 2.4.18 2.4.19 Chapter 3 iv LVDS Brightness Control Mode Setting (JP1) .......................................... 10 LVDS Voltage Selection (JP2 and JP3) .................................................... 10 Restore BIOS Optimal Defaults (JP4) ....................................................... 10 COM1 Data/Power Selection (JP6) ........................................................... 10 Auto Power On (JP7) ................................................................................. 11 Digital I/O Connector (CN1) ...................................................................... 13 CPU Fan Connector (CN2) ....................................................................... 13 SATA Power Connector (CN4) .................................................................. 13 Front Panel Connector (CN6) ................................................................... 14 Inverter Connector (CN7) .......................................................................... 15 Internal USB 2.0 Port (CN8) ...................................................................... 15 LVDS Connector (CN9) ............................................................................. 16 Audio Connector (CN10) ........................................................................... 18 Ethernet Port (CN11) ................................................................................. 18 USB Ports (CN12 and CN13) .................................................................... 18 HDMI Connector (CN14) ........................................................................... 19 SMBus Connector (CN15) ........................................................................ 19 VGA Connector (CN16) ............................................................................. 19 COM Connectors (CN17 and CN18)......................................................... 20 SATA Connector (CN19) ........................................................................... 20 ATX Power Connector (CN20) .................................................................. 21 PCI-Express Mini Card (USB) and mSATA Connector (SCN1) ................ 21 PCI-Express Mini Card Connector (SCN2) ............................................... 22 ZIO Expansion Connector (SCN5) ............................................................ 23 Hardware Description ........................... 25 3.1 Microprocessors ............................................................................... 25 3.2 BIOS ................................................................................................... 25 3.3 System Memory ................................................................................. 25 3.4 I/O Port Address Map ........................................................................ 25 3.5 Interrupt Controller (IRQ) Map ......................................................... 26 3.6 Memory Map ...................................................................................... 29 Chapter 4 AMI BIOS Setup Utility .......................... 31 4.1 Starting ............................................................................................... 31 4.2 Navigation Keys ................................................................................ 31 4.3 Main Menu.......................................................................................... 33 4.4 Advanced Menu ................................................................................. 34 4.5 Chipset Menu ..................................................................................... 49 4.6 Security Menu .................................................................................... 54 4.7 Boot Menu.......................................................................................... 55 4.8 Save & Exit Menu .............................................................................. 56 Appendix A Watchdog Timer ................................... 59 A.1 About Watchdog Timer ..................................................................... 59 A.2 How to Use Watchdog Timer ............................................................ 59 A.3 Sample Program ................................................................................ 60 Appendix B Digital I/O ............................................. 63 B.1 About Digital I/O ................................................................................ 63 B.2 Digital I/O Programming ................................................................... 63 Appendix C Window® 7 Installation Guide ............... 67 v This page is intentionally left blank. vi ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Chapter 1 Introduction ® TM The CAPA840, a 3.5” board, supports Intel Atom E3845/E3827 processors. It delivers outstanding system performance through high-bandwidth interfaces, multiple I/O functions for interactive applications and various embedded computing solutions. The CAPA840 comes with two 204-pin unbuffered SO-DIMM sockets for dual 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, one USB 3.0 super speed and 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, it provides you with unique embedded features, such as two serial ports (one RS-232/422/485 and one RS-232) and 3.5” form factor that applies an extensive array of PC peripherals. Introduction 1 ® TM CAPA840 Intel Atom 1.1 Features ® TM Intel Atom quad core E3845 (1.91GHz) and dual core E3827 (1.75GHz) 2 DDR3L SO-DIMM supports up to 8GB memory capacity 4 USB 2.0 ports 1 USB 3.0 port 2 COM ports 2 PCI-Express Mini Cards +12V~+24V DC-in supported Wide operating temperature supported 1.2 Processor E3845/E3827 Capa Board Specifications CPU ® TM - Intel Atom quad core E3845 1.91GHz. ® TM - Intel Atom dual core E3827 1.75GHz. Thermal Solution Passive. Operating Temperature -20°C~70°C. BIOS American Megatrends Inc. UEFI (Unified Extensible Firmware Interface) BIOS. 64Mbit SPI Flash, DMI, Plug and Play. PXE Ethernet Boot ROM. System Memory Two 204-pin unbuffered DDR3L SO-DIMM sockets. Maximum up to 8GB DDR3L 1333/1066MHz memory. Note Please make sure the lower SO-DIMM socket must be inserted and both memory modules are of the same size, chip width, density and rank. It is suggested to insert the 4GB DDR3L module on each SO-DIMM socket for better performance. Onboard Multi I/O Controller: Fintek F81803U. Serial Ports: One port for RS-232/422/485 and one port for RS-232. Serial ATA One SATA-300 connector. mSATA supported USB Interface Four USB ports on the rear I/O: One for USB 3.0 and three for USB 2.0. One USB 2.0 port in 4-pin internal connector. 2 Introduction ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board 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. 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 i211AT supports 1000/100/10Mbps Gigabit/Fast Ethernet with Wake-on-LAN and PXE Boot ROM. Audio HD audio compliant with Realtek ALC662. 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 but only support USB 2.0. One full-size PCI-Express Mini Card Socket complies with PCI-Express Mini Card Spec. V1.2. Power Input One 2x2-pin connector. +12V~+24V DC-in. 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 XHCI driver Trusted Execution Engine Sideband Fabric Device Introduction 3 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board This page is intentionally left blank. 4 Introduction ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Chapter 2 Board and Pin Assignments 2.1 Board Dimensions and Fixing Holes Top View Board and Pin Assignments 5 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Bottom View Side View 6 Board and Pin Assignments ® TM CAPA840 Intel Atom 2.2 Processor E3845/E3827 Capa Board Board Layout Top View Side View Board and Pin Assignments 7 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Bottom View 8 Board and Pin Assignments ® TM CAPA840 Intel Atom 2.3 Processor E3845/E3827 Capa Board 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 CAPA840 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 Description LVDS Brightness Control Mode Setting Default: PWM Mode LVDS +3.3V/+5V Voltage Selection Default: +3.3V LVDS +12V Voltage Selection Default: None Restore BIOS Optimal Defaults Default: Normal Operation CN17 Pin 1: DCD COM1 Data/Power Selection Default: RS-232 Data CN17 Pin 8: RI Auto Power On Default: Disable Board and Pin Assignments Setting 1-2 Close 1-2 Close None 1-2 Close 3-5 Close 4-6 Close 1-2 Close 9 ® TM CAPA840 Intel Atom 2.3.1 Processor E3845/E3827 Capa Board LVDS Brightness Control Mode Setting (JP1) This jumper enables you to select PWM or voltage control mode for inverter connector (CN7). These two control modes are for adjusting the brightness of LVDS panel. Function Setting PWM mode (Default) Voltage mode 1-2 close 2-3 close 2.3.2 LVDS Voltage Selection (JP2 and JP3) The board supports voltage selection for flat panel displays. Use these jumpers to set LVDS connector (CN9) pin 1~6 VCCM to +3.3V, +5V or +12V. To prevent hardware damage, before connecting please make sure that input voltage of the flat panel is correct. Function JP2 Setting +3.3V level (Default) +5V level 1-2 close 2-3 close Function JP3 Setting +12V level 1-2 close N/A Open 2.3.3 Restore BIOS Optimal Defaults (JP4) JP2 JP3 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. Function Setting Normal (Default) 1-2 close Restore BIOS optimal defaults 2-3 close 2.3.4 COM1 Data/Power Selection (JP6) 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. 10 Function Setting Power: Set CN17 pin 1 to +5V level Data: Set CN17 pin 1 to DCD (Default) Power: Set CN17 pin 8 to +12V level Data: Set CN17 pin 8 to RI (Default) 1-3 close 3-5 close 2-4 close 4-6 close Board and Pin Assignments ® TM CAPA840 Intel Atom 2.3.5 Processor E3845/E3827 Capa Board Auto Power On (JP7) If JP7 is enabled for AC power input, the system will be automatically power on without pressing soft power button. If JP7 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 Board and Pin Assignments 11 ® TM CAPA840 Intel Atom 2.4 Processor E3845/E3827 Capa Board 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 Digital I/O Connector CN2 CPU Fan Connector CN4 SATA Power Connector CN6 Front Panel Connector CN7 Inverter Connector CN8 Internal USB 2.0 Port 1 CN9 LVDS Connector CN10 Audio Connector CN11 Ethernet Port 1 and 2 CN12 USB 2.0 Port 6 and 7 CN13 USB 3.0 Port 0 and USB 2.0 Port 2 CN14 HDMI Connector CN15 SMBus Connector CN16 VGA Connector CN17 COM1 Connector CN18 COM2 Connector CN19 SATA Connector CN20 ATX Power Connector SCN1 PCI-Express Mini Card (USB) and mSATA Connector SCN2 PCI-Express Mini Card Connector SCN3 Channel 0 DDR3L SO-DIMM Socket SCN4 Channel 1 DDR3L SO-DIMM Socket SCN5 ZIO Expansion Connector 12 Board and Pin Assignments ® TM CAPA840 Intel Atom 2.4.1 Processor E3845/E3827 Capa Board Digital I/O Connector (CN1) 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 Digital Output 0 GND 2 4 6 8 10 Digital Output 4 Digital Output 3 Digital Output 2 Digital Output 1 +5V level 2.4.2 CPU Fan Connector (CN2) This is a Molex 5045, 3-pin p=2.54mm wafer connector for fan interface. Fan is needed for cooling down CPU temperature. 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 2.4.3 SATA Power Connector (CN4) This is a JST B4B-XH-K-S, 4-pin p=2.5mm wafer connector for interfacing to SATA 2.5" HDD power supply. Pin Signal 1 2 3 4 +12V level GND GND +5V level Board and Pin Assignments 13 ® TM CAPA840 Intel Atom 2.4.4 Processor E3845/E3827 Capa Board Front Panel Connector (CN6) 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 ® TM CAPA840 Intel Atom 2.4.5 Processor E3845/E3827 Capa Board Inverter Connector (CN7) 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 2.4.6 Internal USB 2.0 Port (CN8) This is a Molex 53047-0419, 4-pin p=1.25mm wafer connector for USB 2.0 port 1. Pin Signal 1 2 3 4 USB3_PWR23 D2+ D2GND Board and Pin Assignments 1 15 ® TM CAPA840 Intel Atom 2.4.7 Processor E3845/E3827 Capa Board LVDS Connector (CN9) 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 JP2 or JP3 (see section 2.3.2). 18-bit single channel 16 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 ® TM CAPA840 Intel Atom 24-bit single channel Processor E3845/E3827 Capa Board 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 Board and Pin Assignments 17 ® TM CAPA840 Intel Atom 2.4.8 Processor E3845/E3827 Capa Board Audio Connector (CN10) This is a Molex 78046-102, 10-pin p=2.0mm box header for audio interface. 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 2.4.9 Ethernet Port (CN11) The board has dual RJ-45 connector. 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 Signal L1 L2 L3 L4 MDI0+ L5 MDI2+ MDI0L6 MDI2MDI1+ L7 MDI3+ MDI1L8 MDI31000 LAN LED (Orange) / 100 LAN LED (Green) Active LED (Yellow) A B 2.4.10 Pin Ethernet 2 Signal Ethernet 1 USB Ports (CN12 and CN13) These are CN12 (for USB 2.0 port 6 and 7) and CN13 (for USB 3.0 port 0 and USB 2.0 port 2) connectors on the rear I/O. They are commonly used for installing USB peripherals such as keyboard, mouse, scanner, etc. Pin 2 3 4 USB VCC (+5V level) USB #4_DUSB #4_D+ GND Pin Signal 1 Pin Signal 6 7 8 USB VCC (+5V level) USB #5_DUSB #5_D+ GND Pin Signal 8 USB #0_RXN 9 USB #0_RXP USB VCC (+5V level) USB #6_DUSB #6_D+ GND 5 2 USB VCC (+5V level) USB #3_D- 3 USB #3_D+ 10 4 5 6 7 GND USB #0_RXN USB #0_RXP GND 11 12 13 1 18 Signal CN12 5 6 7 8 1 2 3 4 CN13 Board and Pin Assignments ® TM CAPA840 Intel Atom 2.4.11 Processor E3845/E3827 Capa Board HDMI Connector (CN14) 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 CN14. Pin Signal Pin Signal 1 3 5 7 9 11 13 15 17 19 HDMI DATA2+ HDMI DATA2GND HDMI DATA0+ HDMI DATA0GND N.C. HDMI SCL GND HDMI_HTPLG 2 4 6 8 10 12 14 16 18 GND HDMI DATA1+ HDMI DATA1GND HDMI Clock+ HDMI ClockN.C. HDMI SDA +5V 2.4.12 SMBus Connector (CN15) This connector is a JST B3B-PH-K-S, 3-pin p=2.0mm wafer connector 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 2.4.13 VGA Connector (CN16) 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 ® TM CAPA840 Intel Atom 2.4.14 Processor E3845/E3827 Capa Board COM Connectors (CN17 and CN18) These are Molex 78046-102, 10-pin p=2.0mm box headers for COM1 (CN17) and COM2 (CN18). Only COM1 is equipped with +5V level power capability on DCD and +12V level on RI by setting JP6 (see section 2.3.4). Also only COM1 supports RS-232/422/485 communication mode, see pin assignments given in table below. If you need COM1 to support RS-422 or RS-485, please refer to BIOS setting in section 4.4. COM1 (RS-232/422/485): Pin RS-232 RS-422 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 COM2 (RS-232 only): Pin Signal 1 3 5 7 9 DCD RXD TXD DTR GND 2.4.15 RS-485 CN17 DataNo use Data+ No use No use No use No use No use No use No use Pin Signal 2 4 6 8 10 DSR RTS CTS RI N.C. CN18 SATA Connector (CN19) 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 ® TM CAPA840 Intel Atom 2.4.16 Processor E3845/E3827 Capa Board ATX Power Connector (CN20) 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 CN20 is a 4-pin power supply interface. External power supply plug fits into CN20 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~+24V +12V~+24V 2.4.17 (SCN1) PCI-Express Mini Card (USB) and mSATA Connector This is a PCI-Express Mini Card connector on the bottom side applying to only USB 2.0 and SATA (mSATA). It also complies with PCI-Express Mini Card Spec. V1.2. 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 SATA_RXP SATA_RXN GND GND SATA_TXN 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 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 #4_DUSB #4_D+ GND No use No use No use +1.5V GND +3.3VSB Board and Pin Assignments 21 ® TM CAPA840 Intel Atom 2.4.18 Processor E3845/E3827 Capa Board 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. It complies with PCI-Express Mini Card Spec. V1.2. 22 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_RXN PE_RXP GND GND PE_TXN PE_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 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 #5_DUSB #5_D+ GND No use No use No use +1.5V GND +3.3VSB Board and Pin Assignments ® TM CAPA840 Intel Atom 2.4.19 Processor E3845/E3827 Capa Board ZIO Expansion Connector (SCN5) The board is equipped with SCN5 on the bottom side for connecting CPU board to a ZIO module. Pin Signal Pin Signal A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A30 +12V +5VSB +5VSB +3.3VSB +3.3VSB RSVD PWROK SMB_CLK SMB_DATA GND PCI-E RXP4 PCI-E RXN4 USBOC_N USB #7_D+ USB #7_DNo Use No Use GND No Use No Use PLTRST_N No Use No Use GND No Use No Use No Use No Use GND No Use B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 B22 B23 B24 B25 B26 B27 B28 B29 B30 GND GND GND GND RSVD RSVD RSVD RSVD GND PCI-E TXP4 PCI-E TXN4 WAKE_N PCI-E CLKP PCI-E CLKN GND CLK_33M SERIRQ LAD0 LAD1 LAD2 LAD3 L_FRAME GND No Use No Use No Use No Use GND No Use No Use Board and Pin Assignments 23 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board This page is intentionally left blank. 24 Board and Pin Assignments ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Chapter 3 Hardware Description 3.1 Microprocessors ® TM The CAPA840 supports Intel Atom E3845/E3827 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 CPU from damages. 3.2 BIOS The CAPA840 uses AMI Plug and Play BIOS with a single 64Mbit SPI Flash. 3.3 System Memory The CAPA840 supports two 204-pin DDR3L SO-DIMM sockets for maximum memory capacity up to 8GB DDR3L SDRAMs. The memory module comes in sizes of 1GB, 2GB, 4GB and 8GB. Note 3.4 ® TM The Intel Atom E3845/E3827 processors support dual memory channel configuration. You must install memory modules of the same size, chip width, density and rank. Also it is a must to have SO-DIMM inserted in SCN3. ® TM The Intel Atom E3815 processor only supports single memory channel configuration. For single memory channel configuration, you must insert memory module in channel 0 DDR3L SO-DIMM socket (SCN3). I/O Port Address Map ® The Intel Atom TM E3845/E3827 processors communicate via I/O ports. Hardware Description 25 ® TM CAPA840 Intel Atom 3.5 Processor E3845/E3827 Capa Board Interrupt Controller (IRQ) Map The interrupt controller (IRQ) mapping list is shown as follows: 26 Hardware Description ® TM CAPA840 Intel Atom Hardware Description Processor E3845/E3827 Capa Board 27 ® TM CAPA840 Intel Atom 28 Processor E3845/E3827 Capa Board Hardware Description ® TM CAPA840 Intel Atom 3.6 Processor E3845/E3827 Capa Board Memory Map The memory mapping list is shown as follows: Hardware Description 29 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board This page is intentionally left blank. 30 Hardware Description ® TM CAPA840 Intel Atom Processor E3845/E3827 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 2.3.3). 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 31 ® TM CAPA840 Intel Atom Processor E3845/E3827 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. 32 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom 4.3 Processor E3845/E3827 Capa Board 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 Information Display the auto-detected BIOS 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 33 ® TM CAPA840 Intel Atom 4.4 Processor E3845/E3827 Capa Board 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: ► ► ► ► ► ► ► ► ► Trusted Computing ACPI Settings F81803 Super IO Configuration Hardware Monitor NCT6627UD Second Super IO Configuration (This option appears only if a ZIO module with serial ports is connected) CPU Configuration IDE Configuration Miscellaneous Configuration USB Configuration For items marked with “”, please press <Enter> for more options. 34 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Trusted Computing This screen provides function for specifying the TPM (Trusted Platform Module) 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 35 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board ACPI Settings You can use this screen to select options for the ACPI configuration, and change the value of the selected option. A description of the selected item appears on the right side of the screen. ACPI Sleep State Select the ACPI (Advanced Configuration and Power Interface) sleep state. Configuration options are Suspend Disabled and S3 (Suspend to RAM). The default setting is S3 (Suspend to RAM); this option selects ACPI sleep state the system will enter when suspend button is pressed. 36 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board F81803 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 1~2 Configuration Set parameters related to serial port 1~2. AMI BIOS Setup Utility 37 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Serial Port 1 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-232/422/485 communication mode. 38 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Serial Port 2 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. Hardware Monitor This screen monitors hardware health status. This screen displays the temperature of system and CPU, system voltages (VCORE and +5V). AMI BIOS Setup Utility 39 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board NCT6627UD Second Super IO Configuration This screen is available only if a ZIO module with serial ports is connected. You can use this screen to select options for the Second 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 1~2 Configuration Set parameters related to serial port 1~2 on I/O board. 40 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Serial Port 1 Configuration Serial Port Enable or disable serial port 1 on I/O board. The optimal setting for base I/O address is 3E8h and for interrupt request address is IRQ11. Serial Port 2 Configuration Serial Port Enable or disable serial port 2 on I/O board. The optimal setting for base I/O address is 2E8h and for interrupt request address is IRQ10. AMI BIOS Setup Utility 41 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board CPU Configuration This screen shows the CPU Configuration, and you can change the value of the selected option. Socket 0 CPU Information This item is for socket specific CPU information. Intel Virtualization Technology Enable or disable Intel Virtualization Technology. When enabled, a VMM (Virtual Machine Mode) can utilize the additional hardware capabilities. It allows a platform to run multiple operating systems and applications independently, hence enabling a computer system to work as several virtual systems. 42 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Socket 0 CPU Information This screen shows CPU Information. AMI BIOS Setup Utility 43 ® TM CAPA840 Intel Atom Processor E3845/E3827 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. 44 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board SATA Mode SATA Mode 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 Serial-ATA Port 0 Enable or disable the onboard SATA port 0 which is CN19 (see section 2.4.15). AMI BIOS Setup Utility 45 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Serial ATA Port 1 Serial-ATA Port 1 Enable or disable the onboard SATA port 1 which is SCN1 (see section 2.4.17). 46 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Miscellaneous Configuration OS Selection ® ® Use this item to select Windows 8.x or Windows 7 operating system. The default is ® Windows 8.x. AMI BIOS Setup Utility 47 ® TM CAPA840 Intel Atom Processor E3845/E3827 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. 48 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom 4.5 Processor E3845/E3827 Capa Board 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 49 ® TM CAPA840 Intel Atom 50 Processor E3845/E3827 Capa Board North Bridge This screen shows system memory information and allows users to configure parameters of North Bridge chipset. AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board LVDS Panel Type Select LVDS panel resolution. South Bridge This screen allows users to configure parameters of South Bridge chipset. USB Configuration This item is for USB configuration settings. Audio Controller Control detection of the audio device. AMI BIOS Setup Utility 51 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board South Bridge – USB Configuration XHCI Mode ® When Advanced\Miscellaneous Configuration\OS Selection is set to Windows 8.x, XHCI mode is Enabled. Meanwhile, when Advanced\Miscellaneous Configuration\OS Selection is set to Windows 7, XHCI mode is Smart Auto. 52 ® AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Audio Controller Audio Controller Control detection of the audio device. - Disabled: Audio device will be unconditionally disabled. - Enabled: Audio device will be unconditionally enabled. AMI BIOS Setup Utility 53 ® TM CAPA840 Intel Atom 4.6 Processor E3845/E3827 Capa Board Security Menu The Security menu allows users to change the security settings for the system. Administrator Password Set administrator password. User Password Set user password. 54 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom 4.7 Processor E3845/E3827 Capa Board 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. Legacy 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 ® TM CAPA840 Intel Atom 4.8 Processor E3845/E3827 Capa Board 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 ® TM CAPA840 Intel Atom Processor E3845/E3827 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 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board This page is intentionally left blank. 58 AMI BIOS Setup Utility ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Appendix A Watchdog Timer A.1 About Watchdog Timer Software stability is major issue in most application. Some embedded systems are not watched by operator for 24 hours. It is usually too slow to wait for someone to reboot when computer hangs. The systems need to be able to reset automatically when things go wrong. The watchdog timer gives us solution. The watchdog timer is a counter that triggers a system reset when it counts down to zero from a preset value. The software starts counter with an initial value and must reset it periodically. If the counter ever reaches zero which means the software has crashed, the system will reboot. A.2 How to Use Watchdog Timer The I/O port base addresses of watchdog timer are 2E (hex) and 2F (hex). The 2E (hex) and 2F (hex) are address and data port respectively. Assume that program A is put in a loop that must execute at least once every 10ms. Initialize watchdog timer with a value bigger than 10ms. If the software has no problems; watchdog timer will never expire because software will always restart the counter before it reaches zero. Begin Next Enable and Initialize Watchdog Timer Next Program “A” Next Disable Watchdog Timer Next Watchdog Timer Begin Next Enable and Initialize Watchdog Timer Next Program “A” Next Reset Watchdog Timer Next 59 ® TM CAPA840 Intel Atom A.3 Processor E3845/E3827 Capa Board Sample Program Assembly sample code : ;Enable mov mov out out WDT: dx,2Eh al,87 dx,al dx,al ;Select mov mov out mov mov out Logic device: dx,2Eh al,07h dx,al dx,2Fh al,07h dx,al ;Enable mov mov out mov mov out WDT base address: dx,2Eh al,30h dx,al dx,2Fh al,01h dx,al ;Un-lock super I/O ;Activate WDT: mov dx,2Eh mov al,0F0h out dx,al mov dx,2Fh mov al,80h out dx,al ;Set base timer : mov dx,2Eh mov al,0F6h out dx,al mov dx,2Fh mov al,Mh out dx,al ;M=00h,01h,...FFh (hex),Value=0 to 255 ;(see Note below) ;Set Second or Minute : mov dx,2Eh mov al,0F5h out dx,al mov dx,2Fh mov al,Nh ;N=71h or 79h(see out dx,al Note below) Note: If N=71h, the time base is set to second. M = time value 00: Time-out disable 01: Time-out occurs after 1 second 02: Time-out occurs after 2 seconds 03: Time-out occurs after 3 seconds . . FFh: Time-out occurs after 255 seconds 60 Watchdog Timer ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board If N=79h, the time base is set to minute. M = time value 00: Time-out disable 01: Time-out occurs after 1 minute 02: Time-out occurs after 2 minutes 03: Time-out occurs after 3 minutes . . FFh: Time-out occurs after 255 minutes Watchdog Timer 61 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board This page is intentionally left blank. 62 Watchdog Timer ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Appendix B Digital I/O B.1 About Digital I/O The digital I/O on CPU board has 8 bits. 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. CN1 B.2 Pin Signal Pin Signal 1 3 5 7 9 DI0 DI1 DI2 DO0 GND 2 4 6 8 10 DO4 DO3 DO2 DO1 +5V level Digital I/O Programming 2 I C to GPIO PCA9554PW GPIO. 2 I C address: 01001000. Command byte Command Protocol Function 0 1 2 3 Read byte Read/write byte Read/write byte Read/write byte Input port register Output port register Polarity inversion register Configuration register The command byte is the first byte to follow the address byte during a write transmission. It is used as a pointer to determine which of the following registers will be written or read. Digital I/O 63 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Register 0: Input port register. This register is a read-only port. It reflects the incoming logic levels of the pins, regardless of whether the pin is defined as an input or an output by Register 3. Writes to this register have no effect. The default “X” is determined by the externally applied logic level, normally “1” when no external signal externally applied because of the internal pull-up resistors. Register 0 – Input port register bit description Bit Symbol Access Value 7 6 5 4 3 2 1 0 I7 I6 I5 I4 I3 I2 I1 I0 Read only Read only Read only Read only Read only Read only Read only Read only X X X X X X X X Description Determined by externally applied logic level. Register 1: Output port register. This register reflects the outgoing logic levels of the pins defined as outputs by Register 3. Bit values in this register have no effect on pins defined as inputs. Reads from this register return the value that is in the flip-flop controlling the output selection, not the actual pin value. Register 1 – Output port register bit description Bit Symbol Access Default Value Description 7 6 5 4 3 2 1 0 O7 O6 O5 O4 O3 O2 O1 O0 R R R R R R R R 1 1 1 1 1 1 1 1 Reflects outgoing logic levels of pins defined as outputs by Register 3. Register 2: Polarity Inversion register. This register allows the user to invert the polarity of the Input port register data. If a bit in this register is set (written with “1”), the corresponding Input port data is inverted. If a bit in this register is cleared (written with “0”), the Input port data polarity is retained. Register 2 – Polarity inversion register bit description Bit Symbol Access Default Value Description 7 6 5 4 3 2 1 0 64 N7 N6 N5 N4 N3 N2 N1 N0 R/W R/W R/W R/W R/W R/W R/W R/W 0 0 0 0 0 0 0 0 Inverts polarity of Input port register data. 0 = Input port register data retained (default value). 1 = Input port register data inverted. Digital I/O ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Register 3: Configuration register. This register configures the directions of the I/O pins. If a bit in this register is set, the corresponding port pin is enabled as an input with high-impedance output driver. If a bit in this register is cleared, the corresponding port pin is enabled as an output. At reset, the I/Os are configured as inputs with a weak pull-up to VDD. Register 3 – Configuration register bit description Bit Symbol Access Default Value Description 7 6 5 4 3 2 1 0 C7 C6 C5 C4 C3 C2 C1 C0 Digital I/O R/W R/W R/W R/W R/W R/W R/W R/W 1 1 1 1 1 1 1 1 Configures the directions of the I/O pins. 0 = Corresponding port pin enabled as an output. 1 = Corresponding port pin configured as input (default value). 65 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board This page is intentionally left blank. 66 Digital I/O ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board Appendix C Window® 7 Installation Guide ® Before you install Windows 7, please follow the instructions below: 1. Enter BIOS setup utility, and ensure that Advanced\Miscellaneous Configuration\OS ® Selection option is set to Windows 7 (see section 4.4). 2. After that, go to Chipset\South Bridge to verify that XHCI Mode is Smart Auto. ® Windows 7 Installation Guide 67 ® TM CAPA840 Intel Atom Processor E3845/E3827 Capa Board 3. Save changes and exit BIOS utility. 4. Reboot and you may begin to install Windows 7 on your computer. But please note that during installation, only USB ports at CN13 can be used. 5. After Windows 7 installation is complete, install XHCI driver (Intel_USB_3.0_xHC_Driver_3.0.4.65_MR4_PV) from the product information CD. After installing driver, all USB ports can work properly. 68 Windows 7 Installation Guide ® ® ®