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IBM CMX58886CX Serial Port 1 (CN7) and Serial Port 2 (CN8)

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34 CMX58886CX cpuModule BDM-610000050 Rev A

Serial Port 1 (CN7) and Serial Port 2 (CN8)

Serial Port 1 (COM1) is implemented on connector CN7, and Serial Port 2 is implemented on connector CN8.

The serial ports are normally configured as PC compatible full-duplex RS-232 ports, but you may use the Setup

program to reconfigure these ports as half-duplex RS-422 or full-duplex RS-422 or RS-485. If you reconfigure the

ports, you must also select the I/O address and corresponding interrupt using Setup. Table17 provides the

available I/O addresses and corresponding interrupts.

Serial Port UART

The serial ports are implemented with a 16550-compatible UART (Universal Asynchronous

Receiver/Transmitter). This UART is capable of baud rates up to 115.2 kbaud in 16450 and 16550A compatible

mode, and includes a 16-byte FIFO. Refer to any standard PC-AT hardware reference for the register map of the

UART. For more information about programming UARTs, refer to the Appendix.

RS-232 Serial Port (Default)

The default serial port mode is full-duplex RS-232. With this mode enabled, the serial port connectors must be

connected to RS-232 compatible devices. Table 18 provides the serial port connector pinout and shows how to

connect to an external DB-25 or DB-9 compatible serial connector.

Tabl e 17 Ser ia l Po rt Se tti ng s

I/O Address (hex) IRQ

03F8 IRQ4

02F8 IRQ3

03E8 IRQ4

02E8 IRQ3

Table 18 Serial Port in RS-232 Mode

Pin Signal Function In/Out DB-25 DB-9

1 DCD Data Carrier Detect in 8 1

2DSRData Set Ready in66

3RXDReceive Data in32

4RTSRequest To Send out47

5 TXD Transmit Data out 2 3

6CTSClear To Send in58

7 DTR Data Terminal Ready out 20 4

8RIRing Indicate in229

9,10 GND Signal Ground — 7 5

Contents

Main CMX58886CX cpuModules Users Manual Revision History Page Page Table of Contents Chapter 1 Introduction Chapter 2 Getting Started Chapter 3 Connecting the cpuModule Chapter 4 Using the cpuModule Page Appendix A Hardware Reference Appendix B Troubleshooting Appendix E Limited Warranty Appendix C IDAN Dimensions and Pinout Appendix D Additional Information Chapter 1 Introduction CMX58886CX cpuModules Figure 1 CMX58886CX cpuModule (top view) Thermal Monitor and Thermal Throttling Error-Correction Codes aDIO with Wake-on-aDIO Ordering Information CMX58886CX Model Options Cable Kits and Accessories Board Features I/O BIOS Block Diagram Figure 2 CMX58886CX cpuModule Simplified Block Diagram 10 CMX58886CX cpuModule BDM-610000050 Rev A Specifications Physical Characteristics Operating Conditions Power Consum ption Electrical Characteristics Table 4 Electrical Characteristics 12 CMX58886CX cpuModule BDM-610000050 Rev A Contact Information Page Chapter 2 Getting Started Connector Locations Figure 3 CMX58886CX Connector Locations Table 5 CMX58886CX Basic Connectors Connecting the Utility Cable Connecting a Keyboard Connecting to the PC/10 4-Plus (PCI) Bus Slot Selection Switches PCI Bus Expansion Card Power +5 Volt DC +3.3 Volt DC PCI Bus Signaling Levels Booting the CMX58886CX cpuModule for the First Time Chapter 3 Connecting the cpuModule Connector Locations Figure 4 CMX58886CX Connector Locations BDM-610000050 Rev A Chapter 3: Connecting the cpuModule 23 Table 6 CMX58886CX Basic Connectors Auxiliary Power (CN3) Table 7 Auxiliary Power Connector (CN3) Page Utility Port Connector (CN5) Speaker Keyboard Mouse System Reset Soft Power Button Table 9 Keyboard Connector Pins (CN5) Page BDM-610000050 Rev A Chapter 3: Connecting the cpuModule 29 SVGA Video Connector (CN18) Facing the connector pins of the SVGA Video connector (CN18), the pinout is: Table11 provides the pinout of the video connector. Table 11 SVGA Video Connector (CN18) 30 CMX58886CX cpuModule BDM-610000050 Rev A Tabl e 12 SVG A Vi de o R eso lu tio ns LVDS Flat Panel Video Connector (CN19) Table 13 Flat Panel Video Connector (CN19) Tabl e 1 4 Test ed LVD S Pa ne ls EIDE Connector (CN10) Table 15 EIDE Connector (CN10) ATA/IDE Disk Chip Socket (U16) Table 16 ATA/IDE Disk Chip Socket (U16) Serial Port 1 (CN7) and Serial Port 2 (CN8) Serial Port UART RS-232 Serial Port (Default) Tabl e 17 Ser ia l Po rt Se tti ng s Table 18 Serial Port in RS-232 Mode RS-422 or RS-485 Serial Port Table 19 Full-Duplex Connections Table 20 Half-Duplex RS-485 Mode RS-422 and RS-485 Mode Pinout Table 21 Serial Port in RS-422/485 Mode multiPort (CN6) multiPort Configured as an Advanced Digital I/O (aDIO) Port Tabl e 2 2 mul ti Por t a DI O P ino ut multiPort Configured as a Parallel Port Table 23 multiPort Connector (CN6) as a Parallel Port BDM-610000050 Rev A Chapter 3: Connecting the cpuModule 39 multiPort Configured as a Floppy Drive Controller Table 24 multiPort Connector Floppy Pinout (CN6) USB 2.0 Connector (CN17) Table 25 USB Connector (CN17) BDM-610000050 Rev A Chapter 3: Connecting the cpuModule 41 Ethernet (10/100Base-T and -TX) Connector (CN20) Table 26 Ethernet Connector (CN20) 42 CMX58886CX cpuModule BDM-610000050 Rev A Audio (CN11) Table 27 Audio Connector (CN11) BDM-610000050 Rev A Chapter 3: Connecting the cpuModule 43 PC/104-Plus PCI Bus (CN16) Table 28 PC/104-Plus Bus Signal Assignments1 PC/104-Plus PCI Bus Signals Power Supplies and VIO ATX Power Management Signals (optional) Bridge Link (CN4) Table 29 Bridge Link (CN4) External Power Management (CN12) Optional RTC Battery Input (CN13) Fan Power, +5 V (CN1 4) Table 30 External Power Managment (CN12) Table 31 Optional RTC Battery Input (CN13) Page Chapter 4 Using the cpuModule The RTD Enhanced A MI BIOS Configuring the RTD Enhanced AMI BIOS Entering the BIOS Setup Field Selection Tabl e 34 Set up Key s Main Menu Setup Fields Power On Self Test (POST) Codes Table 35 Main Menu Setup Fields Booting to Boot Block Flash with Fail Safe Boot ROM Memory Map Table 36 First Megabyte Memory Map 54 CMX58886CX cpuModule BDM-610000050 Rev A I/O Address Map Table 37 I/O Addresses Reserved for the CMX58886CX cpuModule Hardware Interrupts Table 38 Hardware Interrupts Used on the CMX58886CX cpuModule multiPort: Advanced Digital I/O Ports (aDIO) Digital I/O Register Set Table 39 Port 0 Data I/O Address 450h Table 40 Port 1 Data I/O Address 451h Table 41 Multi-Function I/O Address 452h Table 42 DIO-Control I/O Address 453hRead Access Table 43 DIO-Control I/O Address 453hWrite Access Table 44 Multi-Function at Address 452h Interrupts Advanced Digital Interrupts Event Mode Match Mode Table 45 Wake Control I/O Address 451h Wake-on-aDIO Table 46 Interrupt and Wake Event Generation multiPort: Parallel Port Control multiPort: Floppy Drive AC97 Audio Ethernet (10/100Base-T and -TX) IDE Controller Configuration Cable Modes Cable Detection Device and Host Mode Host Determination of Cable Type Legacy Mode and Native Mode IDE Legacy Mode Native Mode Configuring the ATA/IDE Disk Chip Socket Real Time Clock Control Table 47 Real Time Clock Registers Watchdog Timer Control Table 48 Wake Control I/O Address 455h Thermal Management Thermal Monitor and Thermal Throttling Fan Mode Further Temperature Reduction Power Mana gement Advanced Power Management (APM) Advanced Configuration and Power Interface (ACPI) Power Butto n Modes Low-Power Wake Options AT vs . ATX Pow er S upp lie s ATX P owe r Sup ply Sig nal s Reducing Power Consumption BDM-610000050 Rev A Chapter 4: Using the cpuModule 69 Multi-Color LED The following table lists the color displayed and the value written. Tabl e 4 9 LED Co lor s Table 50 Multi-Color LED I/O Address 456h Tabl e 51 M an ual LE D Co lo rs Page BDM-610000050 Rev A Chapter 4: Using the cpuModule 71 Reset Status Register Table 52 Reset Status I/O Address 457h - Read Access Table 53 Reset Status I/O Address 457h - Write Access 72 CMX58886CX cpuModule BDM-610000050 Rev A Table 54 Reset Status Description and Priorites User EEPROM Table 55 User EEPROM I/O Address 456h Tabl e 5 6 EEP ROM Re gi st er D es cr ip tio n Features and Settings That Can Affect Boot Time System Recovery Loading Default BIOS Settings Booting to the Fail Safe Boot ROM (FSBR) Basic Interrupt Information for Programmers What happens when an interrupt occurs? How long does it take to respond to an interrupt? Interrupt Request Lines Intel 8259 Programmable Interrupt Controller PCI Interrupts Writing an Interrupt Service Routine (ISR) Sample Code Page Page Jumper Settings and Locations Figure 6 CMX58886CX Jumper and Solder Blob Locations (top side) Table 57 CMX58886CX Jumpers 82 CMX58886CX cpuModule BDM-610000050 Rev A Table 58 CMX58886CX Solder Blobs BDM-610000050 Rev A Appendix A: Hardware Reference 83 Onboard PCI Devices Tabl e 5 9 O nb oa rd PC I De vi ce s Page Appendix B Troubleshooting Common Problems and Solutions Table 60 Troubleshooting Tro ubl esh oo tin g a PC/ 104 -Plus System Tabl e 6 0 Trou bl esh oo ti ng (co nt d) How to Obtain Technical Support Appendix C IDAN Dimensions and Pinout IDAN Dimensions and Connectors Figure 8 IDAN-CMX58886CX Connectors FRONT REAR BDM-610000050 Rev A Appendix C: IDAN Dimensions and Pinout 91 External I/O Connections Table 61 PS/2 Mouse 6-Pin mini-DIN Connector (female) Table 62 Keyboard 6-Pin mini-DIN Connector (female) 92 CMX58886CX cpuModule BDM-610000050 Rev A Table 63 COM1/COM2 (RS-232) 9-Pin D Connector (male) Table 64 COM1/COM2 (RS-422/485) 9-Pin D Connector (male) BDM-610000050 Rev A Appendix C: IDAN Dimensions and Pinout 93 Table 65 multiPort 25-Pin D Connector (female) 94 CMX58886CX cpuModule BDM-610000050 Rev A Table 66 Panel 25-Pin mini D Connector (female) BDM-610000050 Rev A Appendix C: IDAN Dimensions and Pinout 95 Table 67 SVGA 15-Pin High Density D Connector (female) 96 CMX58886CX cpuModule BDM-610000050 Rev A Table 68 USB 9-Pin D Connector (male) Table 69 Ethernet 9-Pin D Connector (female) BDM-610000050 Rev A Appendix C: IDAN Dimensions and Pinout 97 Table 70 Audio 9-Pin D Connector (female) Page Appendix D Additional Information Page Appendix E Limited Warranty