CMX34GS cpuModules™
User’s Manual
BDM-610000082
Revision A
®
www.rtd.com
ISO9001 and AS9100 Certified
“Accessing the Analog World”®
CMX34GS cpuModules™ User’s Manual
RTD Document Number: BDM-610000082 Revision A
Copyright © 2009-2014 RTD Embedded Technologies, Inc. All rights reserved.
Trademarks
Advanced Analog I/O, Advanced Digital I/O, aAIO, aDIO, a2DIO, Autonomous SmartCal, “Catch the Express”,
cpuModule, dspFramework, dspModule, expressMate, ExpressPlatform, HiDANplus, “MIL Value for COTS prices”,
multiPort, PlatformBus, and PC/104EZ are trademarks, and “Accessing the Analog World”, dataModule, IDAN, HiDAN,
RTD, and the RTD logo are registered trademarks of RTD Embedded Technologies, Inc (formerly Real Time Devices,
Inc.). PS/2 is a trademark of International Business Machines Inc. PCI, PCI Express, and PCIe are trademarks of PCI-SIG.
PC/104, PC/104-Plus, PCI-104, PCIe/104, PCI/104-Express and 104 are trademarks of the PC/104 Embedded
Consortium. All other trademarks appearing in this document are the property of their respective owners.
Failure to follow the instructions found in this manual may result in damage to the product described in this manual,
or other components of the system. The procedure set forth in this manual shall only be performed by persons qualified
to service electronic equipment. Contents and specifications within this manual are given without warranty, and are
subject to change without notice. RTD Embedded Technologies, Inc. shall not be liable for errors or omissions in this
manual, or for any loss, damage, or injury in connection with the use of this manual.
Revision History
ii
Revision
Date
A
07/15/2014
CMX34GS cpuModule
Reason for Change
Initial release
BDM-610000082
Rev A
CMX34GS cpuModules™
®
www.rtd.com
ISO9001 and AS9100 Certified
“Accessing the Analog World”®
iv
CMX34GS cpuModule
BDM-610000082
Rev A
Table of Contents
Chapter 1
Introduction
CMX34GS cpuModules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
aDIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
Ordering Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
CMX34GS Model Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cable Kits and Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
4
Board Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RTD Enhanced BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
7
Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
Physical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
9
10
11
Migrating to RTD’s G-Series cpuModules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
Connector Pinout & Function Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
New I/O Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software Differences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
aDIO. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
UEFI Shell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
13
13
14
14
14
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15
Chapter 2
Getting Started
Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
Selecting the Stack Order for the CMX34GS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
20
Stack Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21
Connecting to the Stack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22
Power Input Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22
Connecting to the Utility Port 2.0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
Booting the CMX34GS cpuModule for the First Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
Chapter 3
Connecting the cpuModule
Proper Grounding Techniques. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26
Connector Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
26
Auxiliary Power (CN3). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28
Utility Port 2.0 Connector (CN5) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29
USB 2.0 Connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
29
BDM-610000082
Rev A
Table of Contents
v
Speaker. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
30
31
SVGA Video Connector (CN18) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32
DisplayPort Connector (CN19) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
33
Serial Port 1 (CN7) and Serial Port 2 (CN8) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35
Serial Port UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-232 Serial Port (Default) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-422 or RS-485 Serial Port. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-422 Mode Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RS-485 Mode Pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dual Serial Port Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
35
35
36
37
38
39
Advanced Digital I/O (aDIO™) Port (CN6). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
41
USB 2.0 Connectors (CN17 and CN27) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42
Ethernet (10/100/1000Base-T and -TX) Connectors (CN20 and CN30) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
44
PCIe/104 Type 2 Bus (CN1 - Top and CN2 - Bottom) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
45
PCIe/104 Type 2 Compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
47
Optional RTC Battery Input (CN13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
48
Chapter 4
Using the cpuModule
The RTD Enhanced BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50
Configuring the RTD Enhanced BIOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Entering the BIOS Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Main Menu Setup Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
50
50
50
51
Operating System Specific Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
52
Windows® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Linux® . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
52
52
Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
53
I/O Address Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
54
Hardware Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
55
Advanced Digital I/O Ports (aDIO™). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
56
Digital I/O Register Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Port 1 Data register is a read/write byte direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Advanced Digital Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Event Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Match Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Strobe Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
56
58
58
58
58
58
59
SATA Controller Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60
SATA Port Mappings, by Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Onboard SATA Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SATA Links on the PCIe/104 Type Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Native Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Legacy Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
60
60
60
60
61
vi
CMX34GS cpuModule
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Real Time Clock Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
62
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessing the RTC Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
62
62
Watchdog Timer Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
65
Thermal Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
66
Thermal Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hardware-Enforced Thermal Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Further Temperature Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
66
66
66
Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
67
Advanced Configuration and Power Interface (ACPI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Button Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low-Power Wake Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Performance States (P-states) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
AT vs. ATX Power Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ATX Power Supply Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reducing Power Consumption . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
67
67
67
68
68
68
68
Multi-Color LED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
69
Reset Status Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
70
Features and Settings That Can Affect Boot Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
72
Boot Device Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Add-On Cards With BIOS Extensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
VGA Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hard Drive Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Monitor Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network (PXE) Boot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
72
72
72
72
72
72
System Recovery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
73
Reset Button Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Load Default BIOS Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Serial Power-On-Self-Test (POST) Code Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
73
73
73
Appendix A
Hardware Reference
Jumper Settings and Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
76
Onboard PCI/PCIe Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
77
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
78
Appendix B
Troubleshooting
Common Problems and Solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
80
Troubleshooting a PC/104 System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
81
How to Obtain Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
82
Appendix C
IDAN™ Dimensions and Pinout
IDAN Dimensions and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
84
IDAN Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
85
BDM-610000082
Rev A
Table of Contents vii
External I/O Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix D
86
Additional Information
Application Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
91
Drivers and Example Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
91
Interrupt Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
91
Serial Port Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
91
PC/104 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
91
Appendix E
viii
Limited Warranty
CMX34GS cpuModule
BDM-610000082
Rev A
Chapter 1
Introduction
This manual provides comprehensive hardware and software information for users developing with the
CMX34GS PCIe/104 cpuModule.
Note Read the specifications beginning on page 9 prior to designing with the cpuModule.
This manual is organized as follows:
Chapter 1
Introduction
introduces main features and specifications
Chapter 2
Getting Started
provides abbreviated instructions to get started quickly
Chapter 3
Connecting the cpuModule
provides information on connecting the cpuModule to peripherals
Chapter 4
Using the cpuModule
provides information to develop applications for the cpuModule, including general
cpuModule information, detailed information on storing both applications and system
functions, and using utility programs
Appendix A
Hardware Reference
lists jumper locations and settings, physical dimensions, and processor thermal
management
Appendix B
Troubleshooting
offers advice on debugging problems with your system
Appendix C
IDAN™ Dimensions and Pinout
provides connector pinouts for the cpuModule installed in an RTD Intelligent Data
Acquisition Node (IDAN) frame
Appendix D
Additional Information
lists sources and websites to support the cpuModule installation and configuration
Appendix E
Limited Warranty
BDM-610000082
Rev A
Chapter 1: Introduction
1
CMX34GS cpuModules
RTD's CMX34GS cpuModule represents the latest in low power PCI Express embedded controllers. Based on an
AMD Fusion G-Series APU processor and chipset, the CMX34GS is offered with either a low power 615 MHz
Single-Core processor or a high performance 1.0 GHz Dual-Core processor that supports a 1.33 GHz frequency
on one core, complete with a DDR3 memory interface operating at up to 800 MT/s (400 MHz). All memory chips
are soldered directly onto the board.
The video interface of the cpuModule’s G-Series APU processor is an internal AMD Radeon HD 6250 (615 MHz
single core option) running up to 276 MHz or the HD 6290 (1 GHz dual core option) which runs up to 400 MHz.
Both options provide dual analog SVGAand DisplayPort outputs. The two video outputs are independent, and
can display separate images and display timings, with audio support on the DisplayPort. Maximum resolution of
both video outputs is 1920 x 1200.
A Serial-ATA (SATA) controller provides a fast 3.0 Gbit/sec connection to the hard drives. Network connectivity
is provided by two integrated 10/100/1000 Mbps Ethernet controllers. High-speed peripheral connections
include USB 2.0, with up to 480 Mb/sec data throughput. Four additional SATA links and USB 2.0 connections
permit further expandability on the top and bottom-side PCIe/104 Type 2 connectors, along with x1 PCI Express
Gen 2.0 links. Other features include two RS-232/422/485 COM ports and Advanced Digital I/O (aDIO).
RTD has gone the extra mile to include additional advanced features for maximum flexibility. These include an
onboard SATA surface-mount flash drive with a standard SATA interface. An Advanced Watchdog Timer is
provided that can generate an interrupt or reset when the timer expires. The CMX34GS is also available in a
rugged, fanless IDAN enclosure.
Ethernet (CN30)
USB 2.0 (CN27)
Factory
Use
(CN9)
Factory
Use
(CN4)
COM2&4
(CN9)
DisplayPort
(CN19)
COM1&3
(CN7)
SVGA
Video
(CN18)
aDIO
(CN6)
USB 2.0
(CN17)
Utility
Port 2.0
(CN5)
Ethernet
(CN20)
Battery
(CN13)
PCIe/104 Bus
(CN1 Top & CN2 Bottom)
Figure 1
2
CMX34GS cpuModule
Auxiliary Power
(CN3)
CMX34GS cpuModule (top view)
BDM-610000082
Rev A
You can easily customize the cpuModule by stacking PCI/104-Express or PCIe/104 modules such as video
controllers, Digital Signal Processors, drive carriers, LAN controllers, or analog and digital data acquisition
modules. Stacking modules onto the cpuModule avoids expensive installations of backplanes and card cages,
and preserves the module's compactness.
The cpuModule uses the RTD Enhanced BIOS. Drivers in the BIOS allow booting from hard disk,, or UEFI shell,
thus enabling the system to be used with traditional disk drives or nonmechanical drives. Boot from USB devices
and network are also supported.
The cpuModule and BIOS are also compatible with any real-time operating systems for PC compatible
computers, although these may require creation of custom drivers to use the aDIO and watchdog timer.
aDIO
RTD’s exclusive aDIO™ is 12 digital bits configured as 8 bit-direction programmable and 4-bit port-direction
programmable I/O, plus 2 strobe inputs giving you any combination of inputs and outputs. Match, event, and
strobe interrupt modes mean no more wasting valuable processor time polling digital inputs. Interrupts are
generated when the 8 bit-direction programmable digital inputs match a pattern or on any value change event.
Bit masking allows selecting any subgroup of eight bits. The strobe input latches data into the bit-programmable
port and generates an interrupt.
BDM-610000082
Rev A
Chapter 1: Introduction
3
Ordering Information
The CMX34GS cpuModule is available with a selection of processors and memory sizes. The cpuModule can also
be purchased as part of an Intelligent Data Acquisition Node (IDAN™) building block, which consists of the
cpuModule and a milled aluminum IDAN frame. The IDAN building block can be used in just about any
combination with other IDAN building blocks to create a simple but rugged PC/104 stack. Refer to Appendix C,
IDAN™ Dimensions and Pinout, for more information. The CMX34GS cpuModule can also be purchased as part
of a custom-built RTD HiDAN™ or HiDANplus High Reliability Intelligent Data Acquisition Node. Contact RTD
for more information on its high reliability PC/104 systems.
CMX34GS Model Options
The basic cpuModule model options are shown below. Refer to the RTD website (www.rtd.com) for more
detailed ordering information and any new variations that may be available.
Table 1
CMX34GS cpuModule Model Options
Part Number
Description
CMX34GSS615HR-2048
AMD G-Series, Single Core 615 MHz, 2GB DDR3-SDRAM
CMX34GSD1000HR-2048
AMD G-Series, Dual Core 1 GHz, 2GB DDR3-SDRAM
Cable Kits and Accessories
For maximum flexibility, RTD does not provide cables with the cpuModule. You may wish to purchase the
CMX34GS cpuModule cable kit (P/N XK-CM109), which contains:
•
•
•
•
•
•
•
Utility Port 2.0 multi-function cable (2x USB 2.0 ports, battery, reset button, power button, speaker)
Two serial port cables (DIL-10 to DSUB-9)
VGA monitor cable (DIL-10 to high density 15-pin DSUB)
aDIO cable (DIL-16 to DSUB-25)
Four USB cables (5-pin SIL to USB A)
PCIe/104 Type 2 break-out board (provides standard PC interfaces for SATA and USB devices)
Two Ethernet cables (DIL-10 to RJ-45)
For additional accessories, refer to the RTD website.
4
CMX34GS cpuModule
BDM-610000082
Rev A
Board Features
•
AMD Fusion G-Series FT1 Processor:
Part Number
Cores
Core
Frequency
Boost
Frequency
L1 Cache
(data)
L1 Cache
(instruction)
L2 Cache
CMX34GSS615
One
615 MHz
—
32 KByte
32 KByte
512 KByte
CMX34GSD1000
Two
1.0 GHz
1
1333 MHz
2
32 KByte
2
32 KByte
512 KByte2
1. For CPU boost, only one processor of the dual-core will have boost enabled
2. Discreet L1 and L2 cache structures for each core
•
•
•
•
•
•
•
–
AMD64 technology
–
ACPI-compliant, including support for processor performance (P-states) and sleep states
including S0, S3, S4, and S5
–
Thermal Throttling reduces clock speed to prevent thermal runaway (dual-core only)
–
Supports AMD Virtualization™ technology
–
40 nm process
AMD G-Series A55E Platform Controller Hub
2GBytes BGA DDR3 SDRAM
–
Single-channel memory interface
–
800 MT/s (400MHz) Data Rate
–
Surface Mounted for maximum reliability
Stackable 156-pin PCIe/104 Type 2 bus on top
–
x1 PCI Express Gen 2.0 Links (up to 5.0 GT/s per lane)
–
Two SATA 2.0
–
Two USB 2.0
Stackable 156-pin PCIe/104 Type 2 bus on bottom
–
Four PCI Express x1 Links
–
Two SATA 2.0
–
Two USB 2.0
Advanced Thermal Management
–
Thermal Monitor throttles processor and memory to prevent thermal runaway
–
Passive Heastink
–
Passive Structural Heatsink & Heatpipes in IDAN and HiDAN System Configurations
Advanced Programmable Interrupt Controller (APIC)
–
24 interrupt channels with APIC enabled (15 in legacy PIC mode)
–
High Precision Event Timer
Advanced Configuration and Power Interface (ACPI)
–
ACPI 3.0 Compliant
–
Supported power down modes: S3 (Suspend to RAM), S4 (Hibernate), and S5 (Soft-Off)
–
Wake events include:
•
•
BDM-610000082
Rev A
USB event (device insertion, keyboard keystroke, etc.)
Real Time Clock alarm or timeout
Chapter 1: Introduction
5
•
•
•
•
•
•
Power Switch
etc.
Real-Time Clock (external battery required to maintain time only)
Nonvolatile storage of CMOS settings without battery
Advanced Watchdog timer
Complete PC-compatible Single Board Computer
I/O
•
•
•
AMD Radeon Graphics
Part Number
Cores
Core
Frequency
AMD
Radeon
Graphics Clock
Frequency (maximum)
CMX34GSS615
One
615 MHz
HD 6250
276 MHz
CMX34GSD1000
Two
1.0 GHz
HD 6290
400 MHz
Analog VGA Interface
–
RGB CRT output
–
Maximum Resolution 1920 x 1200
DisplayPort Interface
–
Supports all mandatory features of the VESA DisplayPort Standard (Version 1.1a)
–
Supports Dual-mode DisplayPort (DP++)
•
•
•
•
6
Can outupt single-link HDMI and DVI signals using a simple passive adapter
–
Maximum Resolution 1920 x 1200
–
Audio over DisplayPort supports up to 8 channels
Dual Gigabit Ethernet
–
Two Intel 82574IT Controllers (PRO1000 Series)
–
10/100/1000 Auto-negotiation
–
Jumbo Frame Support (9kB)
–
PXE network Boot
–
Automatic MDI/MDI-X crossover capable
Software-configurable RS-232/422/485 serial ports
–
16550 compatible UARTs for high-speed
–
120 Ohm Termination resistors for RS-422/485 through BIOS Configuration
–
Each serial port connector can be configured as two limited serial ports, for a total of four serial
ports
–
Fully jumperless configuration
Advanced Digital I/O (aDIO)
–
One 8-bit bit-programmable I/O with Advanced Digital Interrupt Modes
–
One 4-bit port programmable as input or output
–
Event Mode Interrupt generates an interrupt when any input bit changes
–
Match Mode Interrupt generates an interrupt when input bits match a preset value
–
External Strobe Mode latches 8 data inputs and generates and interrupt
CMX34GS cpuModule
BDM-610000082
Rev A
–
•
•
•
•
Two Strobes can be configured as readable inputs
Four USB 2.0 (Universal Serial Bus) Ports
–
Supports 480 Mb/s (high-speed), 12Mb/s (full-speed), and 1.5Mbs (low speed) peripherals
–
Automatic resettable over-current protection (500 mA @ 5 Vdc per port)
–
USB Boot capability
Serial ATA (SATA)
–
SATA revision 2.0 with transfer rates up to 3.0 Gbit/sec
–
Compatability mode supports legacy operating systems.
Utility Port 2.0 Connector
–
1x USB 2.0 (Univseral Serial Bus) Port
–
Speaker port (0.1W output)
–
Hardware Reset input
–
Soft Power Button input
–
Battery input for Real Time Clock
Power I/O
RTD Enhanced BIOS
•
•
•
•
•
BDM-610000082
User-configurable using built-in Setup program
Flash-based CMOS Setup - No battery required to store CMOS settings
Supports boot from SATA, USB, or Ethernet (PXE)
UEFI (Unified Extensible Firmware Interface) Shell
Special RTD Reliability Enhancements
Rev A
Chapter 1: Introduction
7
Block Diagram
The next figure shows a simplified block diagram of the CMX34GS cpuModule.
Figure 2
8
CMX34GS cpuModule
CMX34GS cpuModule Simplified Block Diagram
BDM-610000082
Rev A
Specifications
Physical Characteristics
•
•
Dimensions: 95.885mm L x 90.170mm W x 15.240mm H (3.775"L x 3.550"W x 0.600"H)
Weight: Approximately 0.18 Kg (0.4 lb.) with Heatsink
Power Consumption
Exact power consumption depends on the actual application. Typical power consumption of the CMX34GS is
listed in Table 2. Tables 3 and 4 list power consumption for common applications. It is expected that power
consumption of a typical application will be a combination of these scenarios.
Table 2
Typical Power Consumption
Part Number
Typical Power Consumption
CMX34GSS615HR-2048
7.6 W
CMX34GSD1000HR-2048
9.1 W
Table 3
Power Consumption (615 MHz, Single Core)
Idle
Single-Threaded
Application
Multi-Threaded
Application
CPU & Graphics
Intensive
Application
ACPI
S3
ACPI
S4/S5
+5 V Current Draw
1.2 A
1.3 A
—
1.3 A
0.2 A1
0.2 A1
+12 V Current Draw
0.1 A
0.1 A
—
0.2 A
—
—
Power Consumption
6.6 W
7.6 W
—
8.5 W
1.1 W
1.0 W
1. Current draw will be the same whether power is supplied to +5 V or +5V_STBY in S3 or S4/S5
Table 4
Power Consumption (1.0 GHz, Dual Core)
Idle
Single-Threaded
Application
Multi-Threaded
Application
CPU & Graphics
Intensive
Application
ACPI
S3
ACPI
S4/S5
+5 V Current Draw
1.1 A
1.1 A
1.2 A
1.3 A
0.2 A1
0.2 A1
+12 V Current Draw
0.1 A
0.2 A
0.4 A
0.4 A
—
—
Power Consumption
6.1 W
8.6 W
10.7 W
11.1 W
1.0 W
0.9 W
1. Current draw will be the same whether power is supplied to +5 V or +5V_STBY in S3 or S4/S5
Note The measurements listed above are intended to represent common usage scenarios. The
cpuModule’s power consumption is heavily influenced by the running software and system activity.
BDM-610000082
Rev A
Chapter 1: Introduction
9
Operating Conditions
Table 5
Symbol
Parameter
VCC5
Operating Conditions
Test Condition
Min.
Max.
5V Supply Voltage
4.75V
5.25V
VCC12
12V Supply Voltage
11.4V
12.6V
VCCSTBY
5V Standby Voltage1
4.75V
5.25V
-
500mA
-40
-40
+70C
+80C
-40
+60C
0
90%
1
ICCSTBY
5V Standby Current
Ta
Ambient Operating
Temperature2
Ts
Storage Temperature
Rh
Humidity
Board
IDAN
Non-Condensing
1. 5V Standby is used to power the board when the main supply is turned off (power down modes
S3-S5). It is not required for board operation.
2. With supplied heat sink solution. Depending on the CPU usage, performance may degrade as the
ambient temperature approaches the maximum. Contact RTD Tech Support for more
information.
10
CMX34GS cpuModule
BDM-610000082
Rev A
Electrical Characteristics
The table below lists the Electrical Characteristics of the CMX34GS. Operating outside of these parameters may
cause permanent damage to the cpuModule.
Table 6
Symbol
Electrical Characteristics
Parameter
Test Condition
Min.
Max.
0.5 A
5.0 A
USB Ports
Ioc
Overcurrent Limit
Each port
SVGA Port
VOH
Output Voltage High
HSYNC, VSYNC
IOH = –8.0 mA
2.4 V
3.3 V
VOL
Output Voltage Low
HSYNC, VSYNC
IOL = 8.0 mA
0.0 V
0.5 V
VOH
Output Voltage High
DDC_*
IOH = –4.0 mA
2.4 V
3.3 V
VOL
Output Voltage Low
DDC_*
IOL = 8.0 mA
0.0 V
0.4 V
VIH
Input Voltage High
DDC_*
—
2.0 V
5.5 V
VIL
Input Voltage Low
DDC_*
—
-0.3 V
0.8 V
IDDCvcc
Supply Current for
DDC Electronics
—
500 mA
DisplayPort
IVCC
Supply Current
—
500 mA
VOH
Output Voltage High
RL = 3 k
5.0 V
7.0 V
VOL
Output Voltage Low
RL = 3 k
-7.0 V
-5.0 V
VIH
Input Voltage High
—
2.0 V
15 V
VIL
Input Voltage Low
—
-15 V
0.6 V
Serial Ports - RS-232
Serial Ports - RS-422/485
VOD1
Differential Output
RL = 100 Ohm
2.0 V
VOD2
Differential Output
RL = 54 Ohm
1.5 V
VOC
Common Mode
Output
RL = 54 or 100
Ohm
VTH
Differential Input
Threshold
VI
Absolute Max Input
Voltage
3.0 V
-200 mV
-50 mV
-18 V
18 V
aDIO
BDM-610000082
Rev A
VOH
Output Voltage High
IOH = –29 mA
2.4 V
3.3 V
VOL
Output Voltage Low
IOL = 17 mA
0.0 V
0.5 V
VIH
Input Voltage High
—
1.8 V
5.5 V
VIL
Input Voltage Low
—
-0.3 V
IADIOvcc
Supply current
—
0.8 V
500 mA
Chapter 1: Introduction
11
Table 6
Symbol
Parameter
TMIN
Update Interval
Electrical Characteristics
Test Condition
Min.
—
1ms
Max.
Utility Port 2.0 Connector (CN5)
VRTC
Input RTC Voltage1
—
IRTC
RTC Battery Current
—
< 4 uA
IUTILvcc
Utility Supply
Current
—
500 mA
2.5V
3.6 V
1. Only required to maintain date and time when power is completely removed from the system.
Not required for board operation.
12
CMX34GS cpuModule
BDM-610000082
Rev A
Migrating to RTD’s G-Series cpuModules
When migrating to RTD’s AMD G-Series cpuModules, there are several differences from preceding cpuModule
product families of which the customer should be aware.
Connector Pinout & Function Differences
The newer AMD G-Series cpuModules have several connector-related differences, which are summarized below.
Complete information about the connectors on the CMX34GS can be found in Chapter 3, Connecting the
cpuModule.
New I/O Connectors
The CMX34GS cpuModule introduces a new I/O connector that was not present on previous RTD cpuModules:
•
DisplayPort (CN19)
–
Provides video and audio output
–
Unlike legacy LVDS and flat panel connectors which needed to have their BIOS pre-configured
to a specific manufacturer’s flat panel parameters, the DisplayPort connector is compatible with
any display that has a DisplayPort interface.
Connector Differences
While some connectors on the CMX34GS have identical pinouts as on previous cpuModule generations, the
features of the connector are sometimes different. Other connectors have entirely different pinouts than those
on previous cpuModule generations. Connectors with pinout and feature differences include:
•
•
•
BDM-610000082
Auxiliary Power Connector (CN3)
–
12 pins (unlike the 10-pin connector on RTD Montevina cpuModules)
–
+5V and +12V inputs (unlike +5V only auxilliary power connectors found on all previous RTD
cpuModule generations)
–
The Auxilliary Power Connector excludes ATX power signaling. The ATX power signals are
provided on the PCIe/104 Type 2 bus connectors.
Utility Port 2.0 (CN5)
–
Replaces the legacy Utility Port multi-function connector
–
Replaces the PS/2 Mouse and Keyboard connections with one USB 2.0 port
–
The pinout of the Utility Port 2.0 is not compatible with previous generations of RTD
cpuModules.
COM Ports (CN7 and CN8)
–
Connector CN7 can be configured to output Serial POST codes out of the TXD pin when in
single RS-232 mode (unlike RTD Montevina cpuModules, where the DTR pin was configured for
serial POST code output on the second port of CN7 in dual-port mode). For more information,
refer to Serial Power-On-Self-Test (POST) Code Output on page 73.
–
Of all single and dual-port modes, only the single RS-232 pinout is compatible with previous
generations of RTD cpuModules.
–
Dual-mode COM port pinouts permit dual RS-232, dual RS-422, and dual RS-485 modes. Unlike
some previous generations of RTD cpuModules, a dual “combined” mode with RS-232 and
RS-422/458 is not supported.
–
Unlike some previous cpuModule generations, the single-mode RS-422/485 pinouts of the
CMX34GS do not include the DCD, DSR, DTR, and RI signals.
Rev A
Chapter 1: Introduction
13
–
When a COM port connector is configured for dual-port mode, enabling/disabling COM port
termination enables/disables the termination for both ports on that connector. (Some previous
generations of cpuModules have the ability to independently enable/disable termination on
both ports when configured for dual-mode.)
Software Differences
The newer AMD G-Series cpuModules have several software-related differences, which are summarized below.
Complete information about these CMX34GS features can be found in Chapter 4, Using the cpuModule.
aDIO
While the 16-pin aDIO connector is pin-for-pin compatible with previous generations of RTD cpuModules (such
as the Montevina series), the hardware is slightly different, and requires that writes ands reads to/from the aDIO
ports happen no more than once per millisecond. Migrating legacy software to the G-Series that utilizes RTD’s
Advanced Digital I/O may require that you add this delay prior to all reads and writes.
UEFI Shell
Previous generations of RTD cpuModules contained a Failsafe Boot ROM image, which permitted the
cpuModule to boot to a DOS prompt even when no disk drives were connected to the system. The RTD G-Series
cpuModules provide a similar prompt, called the Unified Extensible Firmware Interface (UEFI) Shell, which
provides an enviroment to execute simple commands when no bootable devices are connected to the system.
14
CMX34GS cpuModule
BDM-610000082
Rev A
Contact Information
RTD Embedded Technologies, Inc.
103 Innovation Blvd.
State College, PA 16803-0906
USA
Phone:
Fax:
+1-814-234-8087
+1-814-234-5218
E-mail:
sales@rtd.com
techsupport@rtd.com
Internet:
http://www.rtd.com
BDM-610000082
Rev A
Chapter 1: Introduction
15
16
CMX34GS cpuModule
BDM-610000082
Rev A
Chapter 2
Getting Started
For many users, the factory configuration of the CMX34GS cpuModule can be used to get a PC/104 system
operational. You can get your system up and running quickly by following the simple steps described in this
chapter, which are:
1.
Before connecting the cpuModule, the user must be properly grounded to prevent electrostatic
discharge (ESD). For more information, refer to Proper Grounding Techniques on page 26.
2.
Connect power.
3.
Connect the Utility Port 2.0 cable.
4.
Connect a USB keyboard.
5.
Default BIOS configuration.
6.
UEFI (Unified Extensible Firmware Interface) shell.
7.
Connect a monitor to the SVGA connector or DisplayPort interface.
Refer to the remainder of this chapter for details on each of these steps.
BDM-610000082
Rev A
Chapter 2: Getting Started
17
Connector Locations
Figure 3 shows the connectors of the CMX34GS cpuModule.
Ethernet (CN30)
USB 2.0 (CN27)
Factory
Use
(CN9)
Factory
Use
(CN4)
COM2&4
(CN9)
DisplayPort
(CN19)
COM1&3
(CN7)
SVGA
Video
(CN18)
aDIO
(CN6)
USB 2.0
(CN17)
Utility
Port 2.0
(CN5)
Ethernet
(CN20)
Battery
(CN13)
PCIe/104 Bus
(CN1 Top & CN2 Bottom)
Figure 3
Auxiliary Power
(CN3)
CMX34GS Connector Locations
Note Pin 1 of each connector is indicated by a white silk-screened square on the top side of the board
and a square solder pad on the bottom side of the board.
18
CMX34GS cpuModule
BDM-610000082
Rev A
Table 7
CMX34GS Basic Connectors
Connector
Function
Size and Pitch
Mating Connector
CN1
PCIe/104 Type 2 Bus (Top)
156-pin, 0.635mm
Samtec ASP-129646-03
CN2
PCIe/104 Type 2 Bus (Bottom)
156-pin, 0.635mm
Samtec ASP-129637-03
CN3
Auxiliary Power
1x12, 0.1”
FCI 65039-025LF
CN5
Utility Port 2.0
2x5, 0.1”
3M 89110-0001
CN6
aDIO
2x8, 0.1”
3M 89116-0001
CN7
Serial Port 1 (COM 1&3)
2x5, 0.1”
3M 89110-0001
CN8
Serial Port 2 (COM 2&4)
2x5, 0.1”
3M 89110-0001
CN13
RTC Battery Input (optional)
1x2, 2mm
FCI 69305-002LF
CN15
Reserved
1x3, 2mm
FCI 69305-003LF
CN17
USB 2.0
2x5, 0.1”
3M 89110-0001
CN18
Video (SVGA)
2x5, 0.1”
3M 89110-0001
CN19
DisplayPort
Molex P/N Series
47272-xxxx
Molex P/N Series
68783-xxxx
CN20
Ethernet
2x5, 0.1”
3M 89110-0001
CN27
USB 2.0
2x5, 0.1”
3M 89110-0001
CN30
Ethernet
2x5, 0.1”
3M 89110-0001
WARNING If you connect power incorrectly, the module will almost certainly be damaged or destroyed.
Such damage is not covered by the RTD warranty! Please verify connections to the module before
applying power.
Power is normally supplied to the cpuModule through the top or bottom PCIe connectors (CN1 or CN2). If you
are placing the cpuModule onto a stack that has a PCIe/104 power supply, you do not need to make additional
connections to supply power.
Alternatively, if you are using the cpuModule without a PC/104 stack or with a stack that does not include a
power supply, refer to Auxiliary Power (CN3) on page 28 for an alternative method on how to power the
cpuModule.
BDM-610000082
Rev A
Chapter 2: Getting Started
19
Selecting the Stack Order for the CMX34GS
There are several things to consider when selecting the order of boards in the stack. Before selecting the order,
be sure to determine which bus connector on each board is the “Active” bus. Typically, if a peripheral module has
both PCIe and PCI bus connectors, only the PCIe is active and the PCI is pass-through. The following is a list of
rules to use to determine the stack order:
20
1.
The PCIe connectors above and below the CPU have completely separate signals. Therefore it is
possible to attach boards to the PCIe connector above and below the CPU.
2.
Any board that uses a PCIe or SATA link must be within six boards of the CPU.
3.
To preserve power integrity, it is recommended that there be no more than six boards between the CPU
and the power supply.
4.
In order to maintain maximum performance over the full temperature range, it is recommended that
a PCIe spacer be used between the CPU and any board immediately above it.
5.
A maximum of four PCI boards may be attached to any PCI bus.
6.
The PCIe to PCI bridge (if one exists in the stack) must be at one end of the PCI bus segment, and all of
the peripheral cards at the other end. There may be up to eight PCI pass-through connectors between
the PCIe to PCI bridge and the peripheral cards.
7.
There must be no more than two boards between the first PCI peripheral and the last PCI peripheral.
If there are four PCI peripheral cards in a PCI bus segment, there may not be any PCI pass-through
connections between them.
CMX34GS cpuModule
BDM-610000082
Rev A
Stack Example
The figure below shows an example of a complete system stack. Most systems will be a subset of this example.
This example stack may be further expanded with PCIe to PCIe bridges, or a PCIe to PCI bridge.
PCIe x1 Peripheral
PCIe
PCIe x1 Peripheral
PCIe
Unconnected & Unused
PCI Bus Segment
PCIe x1 Peripheral
PCIe
PCIe x1 Peripheral
No more than eight
PCI Pass-Through
Connectors
All four PCI
Peripherals
together
PCIe
USB Peripheral with pass-through PCI
PCI
PCIe
USB Peripheral with pass-through PCI
PCI
PCIe
SATA Hard Drive Carrier
PCIe
Spacer
PCIe
CMX34GS CPU
PCIe
PCIe x4Peripheral
PCIe
PCIe x1 Peripheral
PCIe
PCIe x1 Peripheral
PCIe
PCIe x1 Peripheral
PCIe
PCIe x1 to PCI Bridge
PCI
PCIe
Power Supply
PCI
PCIe
USB Peripheral with pass-through PCI
PCI
PCIe
USB Peripheral with pass-through PCI
PCI
PCIe
PCI Peripheral
PCI
PCI Peripheral with pass-through ISA
PCI
ISA
PCI Peripheral with pass-through ISA
PCI
ISA
PCI Peripheral with pass-through ISA
PCI
ISA
PCIe and SATA within
six boards of CPU
Spacer to improve
cooling.
PCIe and SATA within
six boards of CPU, no
more than six boards
between CPU and
power supply.
Unconnected & Unused
ISA Bus Segment
Figure 4
BDM-610000082
Rev A
System Stacking Example
Chapter 2: Getting Started
21
Connecting to the Stack
The bus connectors of the cpuModule are simply plugged onto a PC/104 stack to connect to other devices.
Follow the procedure below to ensure that stacking of the modules does not damage connectors or electronics.
WARNING Do not force the module onto the stack! Wiggling the module or applying too much pressure
may damage it. If the module does not readily press into place, remove it, check for bent pins or
out-of-place keying pins, and try again.
For mechanical dimensions, including board-to-board spacing, see Physical Dimensions on page 78.
1.
Turn off power to the PC/104 system or stack.
2.
Always work at an ESD protected workstation, and wear a grounded wrist-strap.
3.
Select and install stand-offs to properly position the cpuModule on the stack.
4.
Remove the cpuModule from its anti-static bag.
5.
Check that pins of the bus connector are properly positioned.
6.
Check the stacking order; make sure all of the busses used by the peripheral cards are connected to the
cpuModule.
7.
Hold the cpuModule by its edges and orient it so the bus connector pins line up with the matching
connector on the stack.
8.
Gently and evenly press the cpuModule onto the PC/104 stack.
Power Input Connections
Power to the board must come from either the top or bottom PCIe/104 Type 2 bus connectors (CN1 or CN2),
or the auxiliary power connector (CN3). These connectors provide the required +5V and +12V DC voltage rail
inputs to the cpuModule.
22
CMX34GS cpuModule
BDM-610000082
Rev A
Connecting to the Utility Port 2.0
The Utility Port 2.0 connector (CN5) implements the following interfaces:
•
•
•
•
•
One USB 2.0 (Universal Serial Bus) port
Speaker port (0.1W output)
Hardware Reset input
Battery input for Real Time Clock
Soft Power Button input
To use these interfaces, you must connect to the Utility Port 2.0 connector (CN5). The Utility Port 2.0 cable from
the RTD cable kit provides a small speaker, two USB 2.0 ports for a keyboard and mouse, a push-button for
resetting the system, a soft-power button, and a lithium battery to provide backup power for the real time clock.
Refer to Utility Port 2.0 Connector (CN5) on page 29 to connect devices to the Utility Port 2.0 connector.
Booting the CMX34GS cpuModule for the First Time
You can now apply power to the cpuModule.If you press Delete on a keyboard while booting, the cpuModule
will enter Setup. Once you have configured the cpuModule using Setup, save your changes and reboot. If you
don’t press Delete, the cpuModule will try to boot from the current settings.
Note You may miss the initial sign-on messages if your monitor takes a while to power on.
Note By default, cpuModules are shipped with a UEFI (Unified Extensible Firmware Interface) shell.
When no other bootable device is installed in the system, the system will boot to it exclusively. This
internal bootable shell may be disabled in the BIOS screen’s boot menu.
Pressing F4 on a keyboard while the cpuModule is booting will result in launching a menu display listing the
system’s bootable devices. This menu permits selecting a different boot device for the power cycle, overriding
the boot order settings in the BIOS setup.
BDM-610000082
Rev A
Chapter 2: Getting Started
23
24
CMX34GS cpuModule
BDM-610000082
Rev A
Chapter 3
Connecting the cpuModule
This chapter provides information on all CMX34GS cpuModule connectors.
Proper Grounding Techniques—page 26
Connector Locations —page 26
Auxiliary Power (CN3)—page 28
Utility Port 2.0 Connector (CN5)—page 29
SVGA Video Connector (CN18)—page 32
DisplayPort Connector (CN19)—page 33
Serial Port 1 (CN7) and Serial Port 2 (CN8)—page 35
Advanced Digital I/O (aDIO™) Port (CN6)—page 41
USB 2.0 Connectors (CN17 and CN27)—page 42
Ethernet (10/100/1000Base-T and -TX) Connectors (CN20 and CN30)—page 44
PCIe/104 Type 2 Bus (CN1 - Top and CN2 - Bottom)—page 45
Optional RTC Battery Input (CN13)—page 48
BDM-610000082
Rev A
Chapter 3: Connecting the cpuModule
25
Proper Grounding Techniques
Before removing the CMX34GS from its static bag, proper grounding techniques must be used to prevent
electrostatic discharge (ESD) damage to the cpuModule. Common grounding procedures include an anti-static
mat on a workbench, which may connect to an anti-static wrist strap (also known as an ESD wrist strap) on the
wrist of the technician or engineer.
Connector Locations
Figure 5 shows the connectors of the CMX34GS cpuModule.
Ethernet (CN30)
USB 2.0 (CN27)
Factory
Use
(CN9)
Factory
Use
(CN4)
COM2&4
(CN9)
DisplayPort
(CN19)
COM1&3
(CN7)
SVGA
Video
(CN18)
aDIO
(CN6)
USB 2.0
(CN17)
Utility
Port 2.0
(CN5)
Ethernet
(CN20)
Battery
(CN13)
PCIe/104 Bus
(CN1 Top & CN2 Bottom)
Figure 5
Auxiliary Power
(CN3)
CMX34GS Connector Locations
Note Pin 1 of each connector is indicated by a white silk-screened square on the top side of the board
and a square solder pad on the bottom side of the board. Pin 1 of the bus connectors match when
stacking PC/104 modules.
26
CMX34GS cpuModule
BDM-610000082
Rev A
Table 8
BDM-610000082
CMX34GS Basic Connectors
Connector
Function
Size and Pitch
Mating Connector
CN1
PCIe/104 Type 2 Bus (Top)
156-pin, 0.635mm
Samtec ASP-129646-03
CN2
PCIe/104 Type 2 Bus (Bottom)
156-pin, 0.635mm
Samtec ASP-129637-03
CN3
Auxiliary Power
1x12, 0.1”
FCI 65039-025LF
CN5
Utility Port 2.0
2x5, 0.1”
3M 89110-0001
CN6
aDIO
2x8, 0.1”
3M 89116-0001
CN7
Serial Port 1 (COM1&3)
2x5, 0.1”
3M 89110-0001
CN8
Serial Port 2 (COM2&4)
2x5, 0.1”
3M 89110-0001
CN13
RTC Battery Input (optional)
1x2, 2mm
FCI 69305-002LF
CN15
Reserved
1x3, 2mm
FCI 69305-003LF
CN17
USB 2.0
2x5, 0.1”
3M 89110-0001
CN18
Video (SVGA)
2x5, 0.1”
3M 89110-0001
CN19
DisplayPort
Molex P/N Series
47272-xxxx
Molex P/N Series
68783-xxxx
CN20
Ethernet
2x5, 0.1”
3M 89110-0001
CN27
USB 2.0
2x5, 0.1”
3M 89110-0001
CN30
Ethernet
2x5, 0.1”
3M 89110-0001
Rev A
Chapter 3: Connecting the cpuModule
27
Auxiliary Power (CN3)
The Auxiliary Power connector (CN3) can be used to supply power to devices that are attached to the
cpuModule. These devices include hard drive, front-end boards for data acquisition systems, and other devices.
Power can also be conveyed to the module through the Auxiliary Power connector (CN3). The cpuModule only
requires +5 VDC, +12 VDC, and ground for operation.
Note Although it is possible to power the cpuModule through the Auxiliary Power connector, the
preferred method is to power it through the bus connector from a power supply in the stack. The
cpuModule can have large current transients during operation, which make powering it through wires
difficult. Powering through the bus eliminates such problems as voltage drop and lead inductance.
If using the Auxiliary Power connector to power the system, care must be taken to ensure good power
connections. The power and ground leads must be twisted together, or as close together as possible to reduce
lead inductance. A separate lead must be used for each of the power pins. All 5V pins, 12V pins, and all ground
pins must be connected. Do not use wire smaller than 20 gauge, and take care to ensure the length of the wire
does not exceed 2 ft. The power supply solution must be verified by measuring voltage at the Auxiliary Power
Connector and verifying that it meets the input voltage specifications. The voltage at the connector should be
checked with an oscilloscope while the system is operational.
WARNING This 12-pin power connector is not compatible with previous generations of RTD
cpuModules.
WARNING If you connect power incorrectly, the module will almost certainly be destroyed. Please verify
power connections to the module before applying power.
G
Table 9
28
CMX34GS cpuModule
Auxiliary Power Connector (CN3)
Pin
Signal
Function
1
GND
Ground
2
+5 V
+5 Volts DC
3
+5 V
+5 Volts DC
4
GND
Ground
5
GND
Ground
6
+12V
+12 Volts DC
7
+12V
+12 Volts DC
8
GND
Ground
9
GND
Ground
10
+5 V
+5 Volts DC
11
+5 V
+5 Volts DC
12
GND
Ground
BDM-610000082
Rev A
Utility Port 2.0 Connector (CN5)
The Utility Port 2.0 connector implements the following functions:
•
•
•
•
•
1x USB 2.0 (Universal Serial Bus) Port
Speaker port (0.1W output)
Hardware Reset input
Soft Power Button input
Battery input for Real Time Clock
Table 10 provides the pinout of the Utility Por 2.0 connector.
Table 10
Utility Port 2.0 Connector (CN5)
Pin
Signal
Function
In/Out
1
SPKR
Speaker Output (open collector)
out
2
PWR
+5 V
out
3
RESET#
Manual Push-Button Reset
4
DATA–
Bidirectional data line for USB1
5
PWRSW#
6
DATA+
7
GND
Ground
out
8
GND
Ground
out
9
BAT
RTC Battery Input
10
GND
Ground
in
in/out
Soft Power Button
in
Bidirectional data line for USB1
in/out
in
out
WARNING The pinout of the Utility Port 2.0 connector is not compatible with previous generations of
RTD cpuModules. Attaching a legacy Utility Port harness to the Utility Port 2.0 connector may damage
or destroy the cpuModule.
Facing the connector pins, the pinout is:
9
7
5
3
1
BAT
GND
PWRSW#
RESET#
SPKR
GND
GND
DATA+
DATA-
PWR
10
8
6
4
2
USB 2.0 Connector
One USB 2.0 compliant connector is available on connector CN5. Table 10 provides the pinout of the USB
connector.
Note For proper operation at USB 2.0 speeds, be sure to use a cable that is rated for USB 2.0, such as the
cable kit supplied by RTD.
BDM-610000082
Rev A
Chapter 3: Connecting the cpuModule
29
Speaker
A speaker output is available on pins 1 and 2 of the Utility Port 2.0 connector. These outputs are controlled by a
transistor to supply 0.1 W of power to an external speaker. The external speaker should have 8 Ohm impedance
and be connected between pins 1 and 2.
System Reset
Pin 3 of the Utility Port 2.0 connector allows connection of an external push-button to manually reset the system.
The push-button should be normally open, and connect to ground when pushed. The type of reset generated by
this button can be set in the BIOS configuration utility.
Soft Power Button
Pin 5 of the Utility Port 2.0 connector allows connection of an external push-button to send a soft power signal
to the system. The push-button should be normally open, and connect to ground when pushed. For more
information on the modes of the Soft Power Button, refer to the Power Management section in Chapter 4, Using
the cpuModule.
30
CMX34GS cpuModule
BDM-610000082
Rev A
Battery
Pin 9 of the Utility Port 2.0 connector is the connection for an external backup battery. This battery is used by
the cpuModule when system power is removed in order to preserve the date and time of the real time clock.
Connecting a battery is only required to maintain time when power is completely removed from the cpuModule.
A battery is not required for board operation.
WARNING The optional RTC battery input connector (CN13) should be left unconnected if the
multi-function connector (CN5) has a battery connected to pin 9.
BDM-610000082
Rev A
Chapter 3: Connecting the cpuModule
31
SVGA Video Connector (CN18)
Table 11 provides the pinout of the video connector.
Table 11
SVGA Video Connector (CN18)
Pin
Signal
Function
In/Out
1
VSYNC
Vertical Sync
out
2
HSYNC
Horizontal Sync
out
3
DDCSCL
Monitor Communications Clock
out
4
RED
Red Analog Output
out
5
DDCSDA
6
GREEN
7
Monitor Communications Data
bidirectional
Green Analog Output
out
PWR
+5 V
out
8
BLUE
Blue Analog Output
out
9
GND
Ground
out
10
GND
Ground
out
Facing the connector pins of the SVGA Video connector (CN18), the pinout is:
32
CMX34GS cpuModule
9
7
5
3
1
GND
PWR
DDCSDA
DDCSCL
VSYNC
GND
BLUE
GREEN
RED
HSYNC
10
8
6
4
2
BDM-610000082
Rev A
DisplayPort Connector (CN19)
The DisplayPort connector on the CMX34GS cpuModule is a standard PC DisplayPort connector complete with
latch holes to provide a rugged connecting solution for latching DisplayPort cables.
The DisplayPort supports all mandatory features of the VESA DisplayPort Standard (Version 1.1a), permits a
maximum resolution of 1920x1200, and supports up to 8 channels of audio out the connector. Full bandwidth
transmission is supported over a two meter cable, with reduced bandwidth transmission supported up to a
length of 15 meters.
The connection supports Dual-Mode DisplayPort (also know as DisplayPort++, sometimes abbreviated as
DP++), and can directly output single-link HDMI and DVI signals by using a simple passive adapter. Passive
adapters acheive HDMI and DVI signaling by adjusting the lower signal levels output by the connector.
Table 12 provides the pinout of the DisplayPort connector.
Table 12
DisplayPort Connector (CN19)
Pin
Signal
Standard Function
Dual-mode (DP++) Function
(DVI / HDMI mode)1
In/Out
1
LN0+
Main Link, Lane 0 (positive)
TMDS Channel 2 (positive)
out
2
GND
Ground
Ground
out
3
LN0-
Main Link, Lane 0 (negative)
TMDS Channel 2 (negative)
out
4
LN1+
Main Link, Lane 1 (positive)
TMDS Channel 1 (positive)
out
5
GND
Ground
Ground
out
6
LN1-
Main Link, Lane 1 (negative)
TMDS Channel 1 (negative)
out
7
LN2+
Main Link, Lane 2 (positive)
TMDS Channel 0 (positive)
out
8
GND
Ground
Ground
out
9
LN2-
Main Link, Lane 2 (negative)
TMDS Channel 0 (negative)
out
10
LN3+
Main Link, Lane 3 (positive)
TMDS Clock (positive)
out
11
GND
Ground
Ground
out
12
LN3-
Main Link, Lane 3 (negative)
TMDS Clock (negative)
out
13
CFG1
Configuration Pin 1
Cable Adapter Detect
out
14
CFG2
Configuration Pin 2
Consumer Electronics Control2
out
15
AUX+
Auxiliary Channel (positive)
DDC Clock
16
GND
Ground
Ground
17
AUX-
Auxiliary Channel (negative)
DDC Data
18
HPD
Hot Plug Detect
Hot Plug Detect
in
19
DPG
Return for DPV
Return for DPV
out
20
DPV
+3.3V DC Power
+3.3V DC Power
out
in/out
out
in/out
1. Requires special passive adapter
2. HDMI mode only
BDM-610000082
Rev A
Chapter 3: Connecting the cpuModule
33
Facing the connector pins of the DisplayPort connector (CN19), the pinout is:
34
19
17
15
13
11
9
7
5
3
1
DPG
AUX-
AUX+
CFG1
GND
LN2-
LN2+
GND
LN0-
LN0+
DPV
HPD
GND
CFG2
LN3-
LN3+
GND
LN1-
LN1+
GND
20
18
16
14
12
10
8
6
4
2
CMX34GS cpuModule
BDM-610000082
Rev A
Serial Port 1 (CN7) and Serial Port 2 (CN8)
Serial Port 1 (COM1) is implemented on connector CN7, and Serial Port 2 (COM2) is implemented on connector
CN8. The serial ports are normally configured as PC compatible full-duplex RS-232 ports, but you may use the
BIOS 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. Table 13
provides the standard I/O addresses and corresponding interrupts.
Table 13
Serial Port Settings
I/O Address (hex)
IRQ
03F8
IRQ4
02F8
IRQ3
03E8
IRQ4
02E8
IRQ3
Serial Port UART
The serial ports are implemented with a 16550/16750-compatible UART (Universal Asynchronous Receiver/
Transmitter). This UART is capable of baud rates up to 115.2 kbaud, and includes a 64-byte FIFO. Refer to any
standard PC-AT hardware reference for the register map of the UART.
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 14 provides the serial port connector pinout and shows how to
connect to an external DB-25 or DB-9 compatible serial connector.
Table 14
BDM-610000082
Rev A
Serial Port in RS-232 Mode
Pin
Signal
Function
In/Out
DB-25
DB-9
1
DCD
Data Carrier Detect
in
8
1
2
DSR
Data Set Ready
in
6
6
3
RXD
Receive Data
in
3
2
4
RTS
Request To Send
out
4
7
5
TXD
Transmit Data
out
2
3
6
CTS
Clear To Send
in
5
8
7
DTR
Data Terminal Ready
out
20
4
8
RI
Ring Indicate
in
22
9
9,10
GND
Signal Ground
—
7
5
Chapter 3: Connecting the cpuModule
35
Facing the serial port’s connector pins, the pinout is:
9
7
5
3
1
GND
DTR
TXD
RXD
DCD
GND
RI
CTS
RTS
DSR
10
8
6
4
2
RS-422 or RS-485 Serial Port
You may use the BIOS setup utility to configure the serial ports as RS-422 or RS-485. In this case, you must
connect the serial port to an RS-422 or RS-485 compatible device.
When using RS-422 mode, you can use the serial ports in either half-duplex (two-wire) or full-duplex (four-wire)
configurations.
Note The cpuModule has a 120 Ohm termination resistor. Termination is usually necessary on all RS-422
receivers and at the ends of the RS-485 bus. Termination resistors can be enabled in the BIOS setup utility.
When using full-duplex in RS-422 mode, connect the ports as shown in Table 15.
Table 15
Full-Duplex Connections
Port 1
Port 2
RXD+
TXD+
TXD+
RXD+
RXD–
TXD–
TXD–
RXD–
In RS-485 mode, the connection of the ports is always half-duplex, as the transceivers’ transmitters are
connected to the receivers internally.
36
CMX34GS cpuModule
BDM-610000082
Rev A
RS-422 Mode Pinout
Table 16 provides the serial port connector pinout when RS-422 mode is enabled.
Table 16
Serial Port in RS-422 Mode
Pin
Signal
Function
In/Out
DB-9
1
TXD–
Transmit Data (–)
out
1
2
—
Reserved
—
6
3
TXD+
Transmit Data (+)
out
2
4
—
Reserved
—
7
5
RXD+
Receive Data (+)
in
3
6
—
Reserved
—
8
7
RXD–
Receive Data (–)
in
4
8
—
Reseved
—
9
9,10
GND
Signal Ground
out
5
Facing the serial port connector, the pinout is:
9
7
5
3
1
GND
RXD-
RXD+
TXD+
TXD-
GND
Rsvd
Rsvd
Rsvd
Rsvd
10
8
6
4
2
WARNING The pinout of the COM ports in RS-422 mode is not compatible with previous generations
of RTD cpuModules.
BDM-610000082
Rev A
Chapter 3: Connecting the cpuModule
37
RS-485 Mode Pinout
Table 17 provides the serial port connector pinout when RS-482 mode is enabled
Table 17
Serial Port in RS-485 Mode
Pin
Signal
Function
In/Out
DB-9
1
D–
Data (–)
in/out
1
2
—
Reserved
—
6
3
D+
Data (+)
in/out
2
4
—
Reserved
—
7
5
—
Reserved
—
3
6
—
Reserved
—
8
7
—
Reserved
—
4
8
—
Reseved
—
9
9,10
GND
Signal Ground
out
5
Facing the serial port connector, the pinout is:
9
7
5
3
1
GND
Rsvd
Rsvd
D+
D-
GND
Rsvd
Rsvd
Rsvd
Rsvd
10
8
6
4
2
WARNING The pinout of the COM ports in RS-485 mode is not compatible with previous generations
of RTD cpuModules.
Note When using the serial port in RS-485 mode, the serial transmitters are enabled and disabled under
software control. The transmitters are enabled by manipulating the Request To Send (RTS*) signal of the
serial port controller. This signal is controlled by writing bit 1 of the Modem Control Register (MCR) as
follows:
• If MCR bit 1 = 1, then RTS* = 0, and serial transmitters are disabled
• If MCR bit 1 = 0, then RTS* = 1, and serial transmitters are enabled
Note For more information on the serial port registers, including the MCR, refer to the Serial Port
Programming reference in Appendix D.
38
CMX34GS cpuModule
BDM-610000082
Rev A
Dual Serial Port Modes
The serial port connectors can be configured as dual serial ports in the BIOS. The mapping between the
connectors and COM port numbers is shown in Table 18. The supported combinations of serial port modes are
listed in Table 19, which also includes a reference to the corresponding connector pinout.
Table 18
Dual Serial Port Connections
Connector
COM A
COM B
CN7
COM 1
COM 3
CN8
COM 2
COM 4
Table 19
Dual Serial Port Modes
COM A
COM B
Pinout
Reference
Echo Mode
RS-232
RS-232
Table 20
—
RS-422
RS-422
Table 21
—
RS-485
RS-485
Table 22
echo cancelled
RS-485
RS-485
Table 21
with echo1
1. Dual RS-485 mode with echo uses dual RS-422 mode pinout
WARNING The dual serial port mode pinouts of the COM ports are not compatible with previous
generations of RTD cpuModules.
Note The cpuModule has 120 Ohm termination resistors. Termination is usually necessary on all RS-422
receivers and at the ends of the RS-485 bus. Termination resistors can be enabled in the BIOS setup utility.
When termination is enabled in dual port mode, it is enabled for both ports.
Table 20
BDM-610000082
Rev A
COM A (RS-232) and COM B (RS-232)
Pin
Signal
Function
In/Out
DB-9
1
DCD1
COM A - Data Carrier Detect
in
1
2
DSR1
COM A - Data Set Ready
in
6
3
RXD1
COM A - Receive Data
in
2
4
TXD2
COM B - Transmit Data
out
7
5
TXD1
COM A - Transmit Data
out
3
6
RXD2
COM B - Receive Data
in
8
7
DTR1
COM A - Data Terminal Ready
out
4
8
RI1
COM A - Ring Indicate
in
9
9,10
GND
Signal Ground
—
5
Chapter 3: Connecting the cpuModule
39
Table 21
COM A (RS-422) and COM B (RS-422)1
Pin
Signal
Function
In/Out
DB-9
1
TXD1-
COM A- Transmit Data (–)
out
1
2
TXD2-
COM B - Transmit Data (–)
out
6
3
TXD1+
COM A - Transmit Data (+)
out
2
4
TXD2+
COM B - Transmit Data (+)
out
7
5
RXD1+
COM A - Receive Data (+)
in
3
6
RXD2+
COM B - Receive Data (+)
in
8
7
RXD1-
COM A- Receive Data (–)
in
4
8
RXD2-
COM B - Receive Data (–)
in
9
9,10
GND
Signal Ground
—
5
1. Dual RS-485 mode with echo uses dual RS-422 mode pinout
Table 22
40
CMX34GS cpuModule
Pin
Signal
1
COM A (RS-485) and COM B (RS-485)
Function
In/Out
DB-9
D1-
COM A- Data (–)
in/out
1
2
D2-
COM B - Data (–)
in/out
6
3
D1+
COM A - Data (+)
in/out
2
4
D2+
COM B - Data (+)
in/out
7
5
—
Reserved
—
3
6
—
Reserved
—
8
7
—
Reserved
—
4
8
—
Reserved
—
9
9,10
GND
Signal Ground
—
5
BDM-610000082
Rev A
Advanced Digital I/O (aDIO™) Port (CN6)
Connector CN6 is configured as an aDIO port. aDIO is 12 digital bits configured as 8-bit programmable and 4-bit
port programmable I/O, providing any combination of inputs and outputs. Match, event, and strobe interrupt
modes mean no more wasting valuable processor time polling digital inputs. Interrupts are generated when the
8-bit programmable digital inputs match a pattern, or on any value change event. Bit masking allows selecting
any subgroup of 8 bits. The strobe input latches data into the bit programmable port and generates an interrupt.
Refer to Advanced Digital I/O Ports (aDIO™)—page 56 for information on programming the aDIO.
Table 23
aDIO Pinout
CN6 Pin
Function
CN6 Pin
Function
1
P0-0
2
P0-1
3
P0-2
4
P0-3
5
P0-4
6
P0-5
7
P0-6
8
P0-7
9
strobe 0
10
strobe 1
11
P1-0
12
P1-1
13
P1-2
14
P1-3
15
GND
16
+5 V1
1. Available during standby.
BDM-610000082
Rev A
Chapter 3: Connecting the cpuModule
41
USB 2.0 Connectors (CN17 and CN27)
Four USB 2.0 compliant connectors are available on connector CN17 and CN27. Table 24 provides the pinout of
the USB connectors.
Table 24
USB Connector (CN17)
Pin
Signal
Function
1
VCC1
Supply +5 V to USB1
out
2
VCC2
Supply +5 V to USB2
out
3
DATA1–
Bidirectional data line for USB1
in/out
4
DATA2–
Bidirectional data line for USB2
in/out
5
DATA1+
Bidirectional data line for USB1
in/out
6
DATA2+
Bidirectional data line for USB2
in/out
7
GND
Ground
out
8
GND
Ground
out
9
GND
Ground
out
10
GND
Ground
out
Table 25
In/Out
USB Connector (CN27)
Pin
Signal
Function
In/Out
1
VCC3
Supply +5 V to USB3
out
2
VCC4
Supply +5 V to USB4
out
3
DATA3–
Bidirectional data line for USB3
in/out
4
DATA4–
Bidirectional data line for USB4
in/out
5
DATA3+
Bidirectional data line for USB3
in/out
6
DATA4+
Bidirectional data line for USB4
in/out
7
GND
Ground
out
8
GND
Ground
out
9
GND
Ground
out
10
GND
Ground
out
Note For proper operation at USB 2.0 speeds, be sure to use a cable that is rated for USB 2.0, such as the
cable kit supplied by RTD.
42
CMX34GS cpuModule
BDM-610000082
Rev A
Facing the connector pins, the pinout of CN17 is:
9
7
5
3
1
GND
GND
DATA1+
DATA1–
VCC1
GND
GND
DATA2+
DATA2–
VCC2
10
8
6
4
2
Facing the connector pins, the pinout of CN27 is:
BDM-610000082
Rev A
9
7
5
3
1
GND
GND
DATA3+
DATA3–
VCC3
GND
GND
DATA4+
DATA4–
VCC4
10
8
6
4
2
Chapter 3: Connecting the cpuModule
43
Ethernet (10/100/1000Base-T and -TX) Connectors (CN20 and CN30)
This connector provides a 10/100/1000Base-T Ethernet connection. Table 26 provides the pinout of the Ethernet
connector. For 1000Base-T, all four pairs are used for transmit and receive.
To use the onboard 10/100/1000 Ethernet controller, Ethernet must be enabled in the BIOS.
When enabled, the multi-color LED will blink to indicate an Ethernet connection. For more information, refer to
the Multi-Color LED section on page 69.
Table 26
44
CMX34GS cpuModule
Ethernet Connector (CN20 and CN30)
RJ-45 Pin
10-Pin DIL Pin
Signal
Function
3
1
B+ (RX+)
Receive+ (10/100)
6
2
B- (RX–)
Receive– (10/100)
4
3
C+
5
4
C-
1
5
A+ (TX+)
Transmit+ (10/100)
2
6
A- (TX–)
Transmit– (10/100)
7
7
D+
8
8
D-
—
9
AGND
Ethernet Ground
—
10
AGND
Ethernet Ground
9
7
5
3
1
AGND
D+
A+
C+
B+
AGND
D+
A–
C+
B–
10
8
6
4
2
BDM-610000082
Rev A
PCIe/104 Type 2 Bus (CN1 - Top and CN2 - Bottom)
Connectors CN1 and CN2 carry the signals of the PCIe/104 PCIe bus. These signals match definitions found in
the PCI/104-Express & PCIe/104 Specification Version 2.10 from the PC/104 Embedded Consortium.
Table 27 lists the pinouts of the PC/104-Express bus connector.
WARNING Not all PCIe cards are compatible with the PCIe/104 Type 2 connector. Be sure that all of the
boards attached to this bus are compatible before powering the system.
Table 27
BDM-610000082
Rev A
PCIe/104 Type 2 Bus Signal Assignments (Top View)1
Signal
Signal
Pin
1
USB_OC#
PE_RST#
2
3
+3.3V
+3.3V
4
5
USB_1p
USB_0p
6
7
USB_1n
USB_0n
8
9
GND
GND
10
11
PEx1_1Tp
PEx1_0Tp
12
13
PEx1_1Tn
PEx1_0Tn
14
15
GND
GND
16
17
PEx1_2Tp
PEx1_3Tp (CN2 only)
18
19
PEx1_2Tn
PEx1_3Tn (CN2 only)
20
21
GND
GND
22
23
PEx1_1Rp
PEx1_0Rp
24
25
PEx1_1Rn
PEx1_0Rn
26
27
GND
GND
28
29
PEx1_2Rp
PEx1_3Rp (CN2 only)
30
31
PEx1_2Rn
PEx1_3Rn (CN2 only)
32
33
GND
GND
34
35
PEx1_1Clkp
PEx1_0Clkp
36
37
PEx1_1Clkn
PEx1_0Clkn
38
39
+5V_STBY
+5V_STBY
40
41
PEx1_2Clkp
PEx1_3Clkp (CN2 only)
42
43
PEx1_2Clkn
PEx1_3Clkn (CN2 only)
44
45
CPU_DIR
PWRGOOD
46
47
Reserved
Reserved
48
49
Reserved
Reserved
50
51
Reserved
PSON#
52
+5 Volts
Pin
Chapter 3: Connecting the cpuModule
45
Table 27
46
CMX34GS cpuModule
PCIe/104 Type 2 Bus Signal Assignments (Top View)1
Signal
Signal
Pin
53
STK0 / WAKE#
STK1
54
55
GND
GND
56
57
Reserved
Reserved
58
59
Reserved
Reserved
60
61
GND
GND
62
63
Reserved
Reserved
64
65
Reserved
Reserved
66
67
GND
GND
68
69
Reserved
Reserved
70
71
Reserved
Reserved
72
73
GND
GND
74
75
Reserved
Reserved
76
77
Reserved
Reserved
78
79
GND
GND
80
81
SATA_1Tp
SATA_0Tp
82
83
SATA_1Tn
SATA_0Tn
84
85
GND
GND
86
87
Reserved
Reserved
88
89
Reserved
Reserved
90
91
GND
GND
92
93
Reserved
Reserved
94
95
Reserved
Reserved
96
97
GND
GND
98
99
Reserved
Reserved
100
101
Reserved
Reserved
102
103
GND
GND
104
+5 Volts
Pin
BDM-610000082
Rev A
Table 27
PCIe/104 Type 2 Bus Signal Assignments (Top View)1
Signal
Signal
Pin
105
STK2
Reserved
106
107
GND
GND
108
109
Reserved
Reserved
110
111
Reserved
Reserved
112
113
GND
GND
114
115
Reserved
Reserved
116
117
Reserved
Reserved
118
119
GND
GND
120
121
Reserved
Reserved
122
123
Reserved
Reserved
124
125
GND
GND
126
127
Reserved
Reserved
128
129
Reserved
Reserved
130
131
GND
GND
132
133
SATA_1Rp
SATA_0Rp
134
135
SATA_1Rn
SATA_0Rn
136
137
GND
GND
138
139
Reserved
Reserved
140
141
Reserved
Reserved
142
143
GND
GND
144
145
Reserved
Reserved
146
147
Reserved
Reserved
148
149
GND
GND
150
151
Reserved
Reserved
152
153
Reserved
Reserved
154
155
GND
GND
156
+12 Volts
Pin
1. Signals marked with (#) are active low.
PCIe/104 Type 2 Compatibility
The PCIe/104 Type 2 connector is compatible with any PCI/104-Express or PCIe/104 peripheral module that
does not use the x16 Link. This includes any card that uses the PCIe x1 links, USB, or a power supply. In addition,
this connector can be used to add SATA devices to the system.
If a card is installed that is not compatible with the Type 2 connector, the CPU will keep the system in soft-off,
and the LED will be Cyan to indicate that there is a Bus Stacking Error. If this feature is not desired, JP5 and JP6
can be installed to disable the Bus Stacking Error feature.
BDM-610000082
Rev A
Chapter 3: Connecting the cpuModule
47
Optional RTC Battery Input (CN13)
The optional RTC battery input is the connection for an external backup battery. This battery is used by the
cpuModule when system power is removed in order to preserve the date and time of the real time clock.
Connecting a battery is only required to maintain time when power is completely removed from the cpuModule.
A battery is not required for board operation.
Table 28
Optional RTC Battery Input (CN13)
Pin
Signal
Function
1
BAT
RTC Battery Input
2
GND
Ground
WARNING This optional RTC battery connector (CN13) should be left unconnected if the Utility Port
2.0 connector (CN5) has a battery connected.
48
CMX34GS cpuModule
BDM-610000082
Rev A
Chapter 4
Using the cpuModule
This chapter provides information for users who wish to develop their own applications programs for the
CMX34GS cpuModule.
This chapter includes information on the following topics:
The RTD Enhanced BIOS —page 50
Operating System Specific Usage—page 52
Memory Map—page 53
I/O Address Map—page 54
Hardware Interrupts —page 55
Advanced Digital I/O Ports (aDIO™)—page 56
SATA Controller Configuration—page 60
Real Time Clock Control—page 62
Watchdog Timer Control—page 65
Thermal Management—page 66
Power Management—page 67
Multi-Color LED—page 69
Reset Status Register—page 70
Features and Settings That Can Affect Boot Time—page 72
System Recovery—page 73
BDM-610000082
Rev A
Chapter 4: Using the cpuModule
49
The RTD Enhanced BIOS
The RTD Enhanced BIOS is software that interfaces hardware-specific features of the cpuModule to an operating
system (OS). Physically, the BIOS software is stored in a Flash EPROM on the cpuModule. Functions of the BIOS
are divided into two parts.
The first part of the BIOS is known as POST (power-on self-test) software, and it is active from the time power is
applied until an OS boots (begins execution). POST software performs a series of hardware tests, sets up the
machine as defined in Setup, and begins the boot of the OS.
The second part of the BIOS is known as the CORE BIOS. It is the normal interface between cpuModule hardware
and the OS which is in control. It is active from the time the OS boots until the cpuModule is turned off. The
CORE BIOS provides the system with a series of software interrupts to control various hardware devices.
Configuring the RTD Enhanced BIOS
The cpuModule Setup program allows you to customize the cpuModule's configuration. Selections made in
Setup are stored on the board and are read by the BIOS at power-on.
Entering the BIOS Setup
You can run Setup by rebooting the cpuModule and repeatedly pressing the Delete key. When you are finished
with Setup, save your changes and exit. The system will automatically reboot
Field Selection
To move between fields in Setup, use the keys listed below.
Table 29
Key
, ,
Function
,
+, –, PgUp, PgDn
Enter
Esc
50
CMX34GS cpuModule
Setup Keys
Move between fields
Selects next/previous values in fields
Go to the submenu for the field
To previous menu then to exit menu
BDM-610000082
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Main Menu Setup Fields
The following is a list of Main Menu Setup fields.
Table 30
Main Menu Setup Fields
Field
Active Keys
Selections
Main
Press Enter to select
Access system information such as the cpuModule’s
serial number, CPU speed and type, BIOS version, FPGA
version, and CMOS time and date settings
Advanced
Press Enter to select
Setup advanced RTD cpuModule features, including
boot options, aDIO and serial port configuration, and
miscellaneous feature control.
AMD
Press Enter to select
Setup AMD CPU and chipset features such as
power-state control, graphics configurations, and SATA
and USB configuration
Security
Press Enter to select
Setup the supervisor and user access passwords or
enable boot sector virus protection
Boot
Press Enter to select
Set the system boot sequence
Exit
Press Enter to select
Save or discard changes and exit the BIOS, or load the
default BIOS settings
Note Future BIOS versions may have slightly different setup menus and options.
Boot Device Selection Menu
Pressing F4 on a keyboard while the cpuModule is booting will result in launching a menu display listing the
system’s bootable devices. This menu permits selecting a different boot device for the power cycle, overriding
the boot order settings in the BIOS setup.
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51
Operating System Specific Usage
Windows®
AMD has identified an issue with Windows 7 where the USB controller can lose synchronization with the main
state machine, and may enter a state from which it cannot exit, resulting in a Windows BSOD (Blue Screen of
Death). This issue cannot be corrected by installing AMD’s drivers, however, it can be resolved with a Windows
Registry change. For more information on this workaround, refer to Microsoft® Knowledge Base article ID
982091.
Linux®
The CMX34GS is fully supported with Linux kernel version 3.1 and onward. Using the CMX34GS with previous
versions of the kernel will require additional configuration steps to fully utilize video. Specifically, users will need
to install the AMD Catalyst™ 13.1 Proprietary Linux® Graphics Driver or later.
52
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Memory Map
Table 31 shows how memory in the first megabyte is allocated in the system.
Table 31
First Megabyte Memory Map
Address (hex)
Description
E0000–FFFFFh
Legacy BIOS image
CF600-DFFFFh
Other ROMs
CE600–CF5FFh
Ethernet Boot PXE ROM
C0000–CE5FFh
Video BIOS
A0000–BFFFFh
Video memory1
9D800–9FFFFh
Extended BIOS data area
00500–9D7FFh
DOS reserved memory area
00400–004FFh
BIOS data area
00000–003FFh
Interrupt vector area
1. Depends on video mode
Memory beyond the first megabyte can be accessed in real mode by using EMS or a similar memory manager.
See your OS or programming language references for information on memory managers.
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53
I/O Address Map
As with all standard PC/104 boards, the total I/O space is 64k in size. However, because early processors only
addressed 10 address lines (SA0–SA9), the first 1k is used for legacy I/O devices. Any ISA add-on modules you
install must therefore use I/O addresses in the range of 0–1023 (decimal) or 000–3FF (hex). The upper I/O
addresses are used for PCI I/O devices, and are automatically assigned by the BIOS or operating system at boot
time.
Note If you add any peripherals to the system you must ensure they do not use reserved addresses listed
below, or malfunctions will occur. The exception to this is if the resource has been released by the user.
Table 32 lists I/O addresses reserved for the CMX34GS cpuModule.
Table 32
I/O Addresses Reserved for the CMX34GS cpuModule
Address Range (hex)
Bytes
000–00Fh
020–021h
16
2
DMA Controller
Interrupt Controller 1
Device
022–02Fh
040–043h
13
4
Reserved
Timer
060–064h
070–071h
5
2
Keyboard Interface
Real Time Clock Port
080–08Fh
0A0–0A1h
16
2
DMA Page Register
Interrupt Controller 2
0C0–0CFh
0F0–0FFh
16
16
DMA Controller 2
Math Coprocessor
170–17Fh
1F0–1FFh
16
16
Hard Disk - Secondary Command1
Hard Disk - Primary Command1
200–201h
2E8–2EFh
2
8
Reserved
Serial Port2
2F8–2FFh
8
Serial Port2
376-377h
3E8–3EFh
2
8
Hard Disk - Secondary Control1
Serial Port2
3F6-3F7h
3F8–3FFh
2
8
Hard Disk - Primary Control1
Serial Port2
C00-C6Fh
CD0-CDFh
112
16
A55E Chipset
A55E Chipset
E80-EBFh
EC0-EC4h
64
5
Reserved
aDIO3
EC5-EFFh
59
Reserved
1. The I/O addresses listed will only be occupied when the SATA controller is configured for Legacy Mode.
When configured for Native Mode (BIOS default), they will be available.
2. The I/O addresses for the serial port are selected in the BIOS Setup utility.
3. If aDIO is disabled, the I/O addresses listed will not be occupied.
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Hardware Interrupts
Note If you add any expansion modules or other peripherals to the system, you must ensure they do not
use interrupts needed by the cpuModule, or malfunctions will occur.
The CMX34GS cpuModule supports the standard PC interrupts listed in Table 33. Interrupts not in use by
hardware on the cpuModule itself are listed as available. Similarly, if the operating system is using APIC, more
IRQs will be available.
Table 33
Hardware Interrupts Used on the CMX34GS cpuModule
Interrupt
Normal Use
0
Timer 0
1
Keyboard
2
Cascade of IRQ 8–15
3
COM2
4
COM1
5
Available
6
Available
7
Available
8
Real Time Clock
9
Available, routed to IRQ 2
10
Available
11
Available
12
Available
1
Available1
151
Available1
14
1. IRQs 14 and 15 are available when the SATA controller is
configured in Native Mode (BIOS default), but will be
utilized the SATA controller is configured for Legacy Mode.
Note The cpuModule has onboard PCI devices that will claim IRQ lines. In some instances, a PCI device
will claim an IRQ line that is required by a legacy device.
Note A device’s hardware interrupt will be available for use if the given device is not present in the system
and the device is disabled in the BIOS setup utility.
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Chapter 4: Using the cpuModule
55
Advanced Digital I/O Ports (aDIO™)
This board supports 12 bits of TTL/CMOS compatible digital I/O (TTL signaling). These I/O lines are grouped
into two ports, Port 0 and Port 1. Port 0 is bit programmable; Port 1 is byte programmable. Port 0 supports RTD’s
Advanced Digital Interrupt modes. The three modes are strobe, match and event. Strobe mode generates an
interrupt and latches Port 0 when the strobe input transitions from low to high. Match mode generates an
interrupt when an 8-bit pattern is received in parallel that matches the match mask register. Event mode
generates an interrupt when a change occurs on any bit. In any mode, masking can be used to monitor selected
lines.
When the CPU boots, all digital I/O lines are programmed as inputs, meaning that the digital I/O line’s initial
state is undetermined. If the digital I/O lines must power up to a known state, an external 10 k-Ohm resistor must
be added to pull the line high or low.
The 8-bit control read/write registers for the digital I/O lines are located from I/O address EC0h to EC3h. These
registers are written to zero upon power up. From EC0h to EC3h, the name of these registers are Port 0 data,
Port 1 data, Multi-Function, and DIO-Control register.
Note While the 16-pin aDIO connector is pin-for-pin compatible with previous generations of RTD
cpuModules (such as the Montevina series), the hardware is slightly different, and requires that writes
ands reads to/from the aDIO ports happen no more than once per millisecond. Migrating legacy software
to the G-Series that utilizes RTD’s Advanced Digital I/O may require that you add this delay prior to all
reads and writes.
Note RTD provides drivers that support the aDIO interface on popular operating systems. RTD
recommends using these drivers instead of accessing the registers directly.
Digital I/O Register Set
Table 34
Port 0 Data I/O Address EC0h
D7
D6
D5
D4
D3
D2
D1
D0
P0.7
P0.6
P0.5
P0.4
P0.3
P0.2
P0.1
P0.0
Port 0 Data register is a read/write bit direction programmable register. A particular bit can be set to input or
output. A read of an input bit returns the value of port 0. A read of an output bit returns the last value written
to Port 0. A write to an output bit sends that value to port 0.
Table 35
Port 1 Data I/O Address EC1h
D7
D6
D5
D4
D3
D2
D1
D0
Reserved
Reserved
Reserved
Reserved
P1.3
P1.2
P1.1
P1.0
Port 1 Data register is a read/write byte direction programmable register. A read on this register when it is
programmed to input will read the value at the aDIO connector. A write on this register when it is programmed
as output will write the value to the aDIO connector. A read on this register when it is set to output will read the
last value sent to the aDIO connector.
Table 36
D7
D6
D5
Multi-Function I/O Address EC2h
D4
D3
D2
D1
D0
The multi-function register is a read/write register whose contents are set by the DIO-Control register. See the
DIO-Control register description for a description of this register.
56
CMX34GS cpuModule
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Table 37
D7
D6
DIO-Control I/O Address EC3h—Read Access
D5
D4
Strobe 1 Status
0 = no strobe
1 = strobe
Strobe 0 Status
0 = no strobe
1 = strobe
Digital IRQ Status
0 = no digital interrupt
1 = digital interrupt
Table 38
D7
D6
D3
Digital IRQ Mode
00 = Disabled
01 = strobe Mode
10 = event mode
11 = match mode
D2
D1
D0
Multi-Function
Register Select
00 = clear mode
01 = port 0 direction
10 = mask register
11 = compare register
Port 1 Direction
0 = input
1 = output
DIO-Control I/O Address EC3h—Write Access
D5
D4
Reserved
D3
Digital IRQ Mode
00 = Disabled
01 = strobe Mode
10 = event mode
11 = match mode
D2
D1
Port 1 Direction
0 = input
1 = output
D0
Multi-Function
Register Select
00 = clear mode
01 = port 0 direction
10 = mask register
11 = compare register
Multi-Function at Address EC2h1
Table 39
X
X
X
X
X
X
X
X
01 Port 0 direction
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
0 no mask, 1 mask
10 DIO mask
M7
M6
M5
M4
M3
M2
M1
M0
read/write
11 compare
C7
C6
C5
C4
C3
C2
C1
C0
read/write
00 clear
0 in, 1 out
1. Contents based on bits D0 and D1 of DIO-Control.
Clear Register:
A read to this register Clears the IRQs and a write to this register sets the DIO-Compare, DIO- Mask,
DIO-Control, Port 1, and Port 0 to zeros. A write to this register is used to clear the board.
Port 0 Direction Register:
Writing a zero to a bit in this register makes the corresponding pin of the aDIO connector an input. Writing
a one to a bit in this register makes the corresponding pin of the aDIO connector an output.
Mask Register:
Writing a zero to a bit in this register will not mask off the corresponding bit in the DIO-Compare register.
Writing a one to a bit in this register masks off the corresponding bit in the DIO-Compare register. When all
bits are masked off the aDIOs comparator is disabled. This condition means Event and Match mode will not
generate an interrupt. This register is used by Event and Match modes.
Compare Register:
A Read/Write register used for Match Mode. Bit values in this register that are not masked off are compared
against the value on Port 0. A Match or Event causes bit 6 of DIO-Control to be set and if the aDIO is in
Advanced interrupt mode, the Match or Event causes an interrupt.
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Chapter 4: Using the cpuModule
57
Port 1 Data register is a read/write byte direction
Interrupts
In order to use an interrupt with aDIO, the interrupt must first be selected in the BIOS setup utility under
Advanced, I/O Devices, aDIO Configuration, aDIO Interrupt. The Digital I/O can use interrupts 3, 5, 6, 10, and
11. To configure the aDIO interrupt, navigage to the BIOS Setup option, the “Advanced”, “RTD aDIO”, and “aDIO
Interrupt” menu options. The BIOS will automatically reserve the selected interrupt so that is it not assigned to
PCI devices. Then, select the appropriate interrupt mode in the DIO Control register.
Advanced Digital Interrupts
There are three Advanced Digital Interrupt modes available. These three modes are Event, Match, and Strobe.
The use of these three modes is to monitor state changes at the aDIO connector. Interrupts are enabled by
writing to the Digital IRQ Mode field in the DIO-Control register.
Event Mode
When this mode is enabled, Port 0 is latched into the DIO-Compare register at 8.33 MHz. The aDIO circuitry
includes deglitching logic. The deglitching requires pulses on Port 0 to be at least 120 ns in width. As long as
changes are present longer than that, the event is guaranteed to register. Pulses as small as 60 ns can register as
an event, but they must occur between the rising and falling edge of the 8.33 MHz clock. To enter Event mode,
set bits [4:3] of the DIO-Control register to “10”.
Match Mode
When this mode is enabled, Port 0 is latched into the DIO-Compare register at 8.33 MHz. The aDIO circuitry
includes deglitching logic. The deglitching requires pulses on Port 0 to be at least 120 ns in width. As long as
changes are present longer than that, the match is guaranteed to register. Pulses as small as 60 ns can register as
a match, but they must occur between the rising and falling edge of the 8.33 MHz clock. To enter Match mode,
set bits [4:3] of the DIO-Control register to “11”.
Note Make sure bits [4:3] are set BEFORE writing the DIO-Compare register. If you do not set them first,
the contents of the DIO-Compare register could be lost because the Event mode latches in Port 0 into the
DIO-Compare register.
58
CMX34GS cpuModule
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Figure 6
aDIO Match Mode
Strobe Mode
Another interrupt mode supported by aDIO is Strobe mode. This allows the strobe pin of the DIO connector to
trigger an interrupt. A low to high transition on the strobe pin will cause an interrupt request. The request will
remain high until the Clear Register is read from. Additionally, the Compare Register latched in the value at Port
0 when the Strobe pin made a low to high transition. No further strobes will be available until a read of the
Compare Register is made. You must read the Compare Register, and then clear interrupts so that the latched
value in the compare register is not lost. To enter Strobe mode, set bits [4:3] of the DIO-Control register to “01”.
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SATA Controller Configuration
The CMX34GS has a combined total of five IDE-mode SATA links, each permitting SATA revision 2.0 transfer
rates up to 3.0 Gbit/sec. Because IDE-mode controllers allow a maximum of four devices (primary and secondary
channels, each supporting a master and slave), the five links are distributed across two controllers.
Four SATA links reside on the top and bottom PCIe/104 Type 2 connectors (CN1 and CN2), and can be
enabled/disabled as a group via the BIOS setup. These four links reside behind the same SATA controller on the
chipset.
The fifth SATA link connects to the onboard SATA storage, and resides on a dedicated PATA controller,
independent from the SATA links on the top and bottom-side PCIe/104 Type 2 connectors. This permits it to be
indepently enabled/disabled through the BIOS setup.
SATA Port Mappings, by Connector
Table 40 shows the SATA port configuration of the CMX34GS cpuModule:
Table 40
SATA Port Layout
Controller
Designator
SATA
CN1
PCIe/104 Top, SATA Link 0
3
Secondary Slave
CN1
PCIe/104 Top, SATA Link 1
2
Primary Slave
CN2
PCIe/104 Bottom, SATA Link 0
0
Primary Master
CN2
PCIe/104 Bottom, SATA Link 1
1
Secondary Master
n/a
Onboard SATA storage
4
Primary Master
PATA
Physical Position, Index
A55E Port Index
Channel Assignment
(Legacy Mode)
Onboard SATA Storage
The cpuModule was designed to be used in embedded computing applications. In such environments, rotating
media like hard disks and floppy disks are not very desirable. It is possible to eliminate rotating storage devices
by placing your operating system and application software into the cpuModule's onboard SATA storage.
The onboard SATA storage will always be connected through the PATA controller, meaning it it will always be
shown as a PATA IDE device, and will always be configured for Legacy Mode.
SATA Links on the PCIe/104 Type Connectors
The SATA links on the top and bottom-side PCIe/104 Type connectors (CN1 & CN2) are connected to a SATA
controller which can be configured for either Native Mode or Legacy Mode in the BIOS Setup. However, the
operating system must support the selected mode for the device to operate correctly. The default configuration
for the controller is Native Mode.
Native Mode
Native mode is the default configuration of the onboard SATA controller. Native Mode allows more flexibility
than Legacy Mode, as it permits the system to modify the resources used by the SATA controller. When in Native
Mode, the SATA controller only requires a single IRQ. Unlike Legacy Mode, this IRQ may be changed by the user
or the operating system for better distribution of the system IRQs. When IRQs in the system are more evenly
distributed, interrupt latency is minimized. The base address of the controller may also be modified.
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Legacy Mode
When in this mode, the controller will be fixed to use two interrupts: IRQs 14 and 15. Similarly, the I/O address
of the controller will be fixed in the system. When in Legacy Mode, only a primary and secondary channel may
be used in the system.
Note Because Legacy Mode permits only a primary and secondary channel in the system, configuring
the PCIe/104 connector’s SATA links for Legacy Mode will disable the onboard SATA storage.
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Real Time Clock Control
Overview
The cpuModule is equipped with a Real Time Clock (RTC) which provides system date and time functions.
When the cpuModule is turned off, a battery must be attached to the Utility Port 2.0 connector (CN5) to provide
power to the RTC. Without power, the RTC will lose the date/time information when the system is turned off.
The RTC also provides an “alarm” function. This may be used to generate an interrupt at a particular time and
day. This feature is commonly used to wake up the system from Sleep/Standby to run a scheduled task
(defragment the hard drive, back up files, etc.).
In addition to the date/time/alarm functions, the RTC contains several bytes of battery-backed RAM, commonly
called CMOS memory. In a typical desktop PC, the CMOS memory is used by the BIOS to store user settings.
This RTD cpuModule uses onboard flash to store user BIOS settings. Except for a few well-known CMOS
locations which are automatically populated for legacy compatibility, the CMOS memory is largely unused and
should be considered “Reserved”.
Note Alternative battery inputs reside on the Optional RTC Battery Input (CN13) as well as the PCIe/104
Type 2 Bus connectors (CN1 & CN2).
WARNING Only one RTC battery input connection should be used at a time. The other should remain
unconnected.
Accessing the RTC Registers
You may access the RTC date/time and CMOS memory using the Index and Data Registers located at I/O
addresses 70h and 71h.
•
Address 70h is the Index register. It must be written with the number of the register to read or write.
Valid values are 00h to 7Fh.
•
Address 71h is the Data register. It contains the contents of the register pointed to by the Index.
To read/write an RTC register, you must first set the Index register with the register number, and then read/write
the Data register.
A list of key RTC registers is shown in Table 41 below. This is not an exhaustive list. Refer to the AMD A55E
datasheet for more detail.
.
Table 41
62
Real Time Clock Registers
Registers
(hex)
Registers
(decimal)
00h
0
RTC Seconds (BCD format)
02h
2
RTC Minutes (BCD format)
04h
4
RTC Hours (BCD format)
06h
6
RTC Day of Week (BCD format)
07h
7
RTC Day of Month (BCD format)
08h
8
RTC Month (BCD format)
09h
9
RTC Year (BCD format)
CMX34GS cpuModule
Function
BDM-610000082
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Table 41
Registers
(hex)
Registers
(decimal)
0Ah
10
0Bh
0Ch
11
12
Real Time Clock Registers
Function
RTC Status Register A
•
Bit 7: RTC Update In Progress (Read Only) - RTC registers
should not be accessed when this bit is high. If this bit is low, you
have at least 244usec to access the RTD registers.
•
•
•
Bits 6-5: Reserved
Bit 4: CMOS Bank Selection (0 = Bank 0, 1 = Bank 1)
Bits 3-0: Rate select for periodic interrupt.
RTC Status Register B
•
Bit 7: Set New Time - When high, the RTC is prevented from
updating. Set this bit before adjusting system time.
•
Bit 6: Periodic Interrupt Enable - When high, the RTC IRQ will
be asserted by the periodic interrupt.
•
Bit 5: Alarm Interrupt Enable - When high, the RTC IRQ will be
asserted when the current time matches the alarm time.
•
Bit 4: Update Ended Interrupt Enable - When high, the RTC IRQ
will be asserted every time the RTC updates (once per second).
•
•
Bits 2-3: Reserved
•
Bit 0: Daylight Savings Enable - When high, the RTC will
automatically update itself for Daylight Savings Time. It is
recommended to leave this bit low and let the operating system
manage time zones and DST.
Bit 1: Hours Byte Format - Sets the hour byte to 12 or 24 hour
time (0=12 hour, 1=24 hour). This is typically set to 24 hour
mode.
RTC Status Register C (Read Only)
•
Bit 7: IRQ Flag - Indicates that the Real Time Clock IRQ is
asserted. Goes high whenever one of the enabled interrupt
conditions in Register B occurs.
•
•
•
•
Bit 6: Periodic Flag
Bit 5: Alarm Flag
Bit 4: Update Ended Flag
Bit 3-0: Reserved
Reading this register will also clear any of set flag (IRQ, Periodic, Alarm, Update
Ended). Note that even if the interrupt source is not enabled in Register B, the
flags in Register C bits 4, 5, and 6 may still be set.
0Dh
13
RTC Status Register D
•
•
•
BDM-610000082
Bit 7: Valid Time/Date
Bit 6: Reserved
Bits 5-0: RTC Alarm Day of the Month
32h
50
RTC Century (BDC format); if RTC Status Register A, Bit 4 = 0
48h
72
RTC Century (BDC format); if RTC Status Register A, Bit 4 = 1
Rev A
Chapter 4: Using the cpuModule
63
Note RTC registers that are not listed above are used by the BIOS and should be considered “Reserved”.
Altering the contents of any unlisted RTC register may interfere with the operation of your cpuModule.
The specific uses of the unlisted RTC registers will depend on the BIOS version loaded on the cpuModule.
Contact RTD's technical support for more information.
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Watchdog Timer Control
The cpuModule includes a Watchdog Timer, which provides protection against programs “hanging”, or getting
stuck in an execution loop where they cannot respond correctly. The watchdog timer consists of a counter, a
reset generator, and an interrupt generator. When the counter reaches the interrupt time-out, it can generate an
interrupt. When the counter reaches the reset time-out, the system is reset. The counter is “refreshed,” or set back
to zero by reading from a specific register. The watchdog can also be put into an “inactive” state, in which no
resets or interrupts are generated.
The ability to generate an interrupt allows the application to gracefully recover from a bad state. For example,
consider a system that has a reset time-out of 2 seconds, interrupt time-out of 1 second, and the watchdog timer
is refreshed every 0.5 seconds. If something goes wrong, an interrupt is generated. The Interrupt service routine
then attempts to restart the application software. If it is successful, the application is restarted in much less time
than a full reboot would require. If it is not successful, the system is rebooted.
Due to system latency, it is recommended that the Watchdog be refreshed at about half of the reset time-out
period, or half of the interrupt time-out period, whichever is applicable.
Register Description
The Advanced Watchdog Timer has a Setup Register and a Runtime Register. The Setup Register is set by the
BIOS, and can be adjusted by entering the BIOS Setup Utility, and going to “Advanced”, “RTD Advanced Options”,
“RTD Miscellaneous Feature Control”. The Setup Register may also be read by the driver to determine if the
Watchdog is enabled, and the interrupt and base address that it is using.
Note Enabling the watchdog timer in the BIOS does not actually arm it. The watchdog timer can be
armed by accessing I/O address E85h, as explained below.
Table 42
D7
D6
D5
D4
Advanced Watchdog Setup Register E8Bh
D3
D2
D1
WDT_IRQ
Select Interrupt for WDT
000 = Disabled
001 = IRQ5
010 = Reserved
011 = IRQ10
100 = IRQ11
101 = Reserved
110 = IRQ3
111 = IRQ6
Reserved
Table 43
D0
Reg_Enable
0 = Watchdog timer is disabled and
Runtime Register will not appear
in I/O map
1 = Watchdog Timer is enabled.
Runtime Register will appear in
I/O map
Advanced Watchdog Runtime Register E85h
D7
D6
WDT_Active
0 = Watchdog
timer is
disabled.
1 = Watchdog is
armed and
can generate
resets and
interrupts.
WDT_IRQ_Ena
0 = Watchdog
interrupt is
disabled.
1 = Watchdog
interrupt is
enabled.
D5
D4
Reserved
D3
D2
WDT_IRQ_Time
Select Interrupt
time for
WDT
00 = 0.25s
01 = 0.50s
10 = 0.75s
11 = 1.00s
D1
D0
WDT_RST_Time
Select Reset time
for WDT
00 = 2.00s
01 = 0.50s
10 = 0.75s
11 = 1.00s
Reading the Runtime Register also refreshes the watchdog timer.
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Thermal Management
The cpuModule has several thermal features which can be used to monitor and control the board’s temperature
when extreme operating conditions are prevalent.
Thermal Monitor
The Thermal Monitor is a feature on the CMX34GS that automatically throttles the CPU when the CPU exceeds
its thermal limit. The maximum temperature of the processor is defined as the temperature that the Thermal
Monitor is activated. The thermal limit and duty cycle of the Thermal Monitor cannot be modified.
Note The CPU and PCB temperatures displayed in the BIOS are approximate and should not be used to
validate a cooling solution.
Hardware-Enforced Thermal Protection
The processor includes a hardware-enforced thermal protection mechanism which will cause the processor to
enter a Thermal Trip state when the processor’s temperature has approached the point at which may be
damaged.
Upon entering the Thermal Trip state, the CMX34GS will immediately transition to the S5 (Soft-Off) ACPI power
state. To exit theThermal Trip state (and S5), a power cycle or RSM reset (deepest reset) is required. The reset
may be configured as an RSM reset (default BIOS setting) in the BIOS setup utility. For more information on the
S5 power state, refer to Advanced Configuration and Power Interface (ACPI)—page 67.
The reset status register contains a bit which indicates if the cpuModule has entered S5 as a result of the
processor entering the Thermal Trip state. For more information on the reset status register, refer to Reset Status
Register—page 70.
Further Temperature Reduction
The cpuModule’s temperature is directly related to power consumption. Reducing the power consumption of
the cpuModule will have an effect on the cpuModule’s temperature. Suggested methods for reducing the
cpuModule’s power consumption can be found in the Power Management section on page 67.
66
CMX34GS cpuModule
BDM-610000082
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Power Management
The CMX34GS cpuModule supports various powering mechanisms which allow the cpuModule to monitor
power consumption and temperature, and achieve minimal power consumption states. These unique features
include thermal monitoring and thermal throttling, as well as low power modes including ACPI configurations.
Various wake options are also available to resume normal system power.
Advanced Configuration and Power Interface (ACPI)
The cpuModule supports several different ACPI low power modes, including the S3, S4, and S5 sleeping states.
These suspend modes are described below:
•
S3 (Suspend to RAM): Everything in the system is powered off except for the system memory. When
the system wakes from this mode, operating systems allow applications to resume where they left off,
as the state of the application is preserved in memory.
•
S4 (Hibernate): When the system enters this state, the operating system will save the current state of
applications and relevant data to disk, thus allowing the system RAM to be powered down.
•
S5 (Soft-Off): The system is in a soft off state, and must be rebooted when it wakes.
Power Button Modes
The soft power button input of the Utility Port 2.0 connector (CN5) can be configured by the operating system
as a suspend button (transition to S3) or as soft power button (transition to S5). Consult your operating system
documentation for information on how to configure it. The power button will always cause a transition to S5 if
pressed for 4 seconds or longer, without interaction from the operating system.
The soft power button of the Utility Port 2.0 connector (CN5) is the only mechanism to wake the system from
S4 and S5.
Note When the reset button of the Utility Port 2.0 connector is configured as a power button (via the
BIOS setup utility), it inherits the ACPI suspend and resume features of the power button.
Low-Power Wake Options
The cpuModule supports several methods of waking from a low power state.
•
Resume from USB: Operating systems that support S3 permit waking the system from the USB
interfaces. Common USB wake methods include insertion of a USB device, a USB keyboard stroke, or
movement from another USB device, such as mouse.
•
Resume on RTC Alarm / Timeout: The RTC Alarm allows the system to turn on at a certain time every
day.
•
Resume on WAKE#: The system can wake when a signal is applied to the WAKE# signal on the
PCIe/104 Type 2 connectors (CN1 & CN2).
Table 44
Supported ACPI Resume/Wake Mechanisms
Resume/Wake Mechanism
BDM-610000082
Rev A
S3
S4
S5
Wake from USB
Y
—
—
Wake from RTC Alarm / Timeout
Y
—
—
Wake from WAKE# (CN1 & CN2)
Y
—
—
Power Button Input (CN5)
Y
Y
Y
Chapter 4: Using the cpuModule
67
Performance States (P-states)
The AMD G-Series processor on the CMX34GS supports various operational performance states (P-states) that
are characterized by a combination of the processor’s core frequency and voltage. For each processor type, P0 is
the highest-power and highest-performance P-state of the processor. Each ascending P-state number represents
a lower-power, lower-performance P-state.
The BIOS setup includes options to set whether the processor operates using higher or lower performance
P-States. The default setting is an automatic mode where P-states are entered and exited dynamically based on
internal processor core thermal limits and power-monitoring approximations.
The number of P-states varies based on the cpuModule’s processor. Each processor’s P-states and their
corresponding frequencies are shown in the table below:
Table 45
Part Number
CPU Core Frequencies per P-state
Cores
Core
Frequency
P0
P1
P2
P3
CMX34GSD1000
Two
1000 MHz
1333 MHz1
1000 MHz
800 MHz
615 MHz
CMX34GSS615
One
615 MHz
615 MHz
—
—
—
1. In the P0 P-State, only one core of the dual core processor will see the CPU’s boost frequency of 1333 MHz. The
other will see 1 GHz.
AT vs. ATX Power Supplies
Both AT and ATX power supplies may be used with the CMX34GS cpuModule, however AT power supplies do
not provide any standby power to the cpuModule. When an AT power supply is used to power the system, low
power modes that require a standby power to wake the system will not be fully supported.
ATX power supplies do provide a standby power, thus allowing the system to utilize all low power modes
supported by the hardware. When an ATX supply is used to power the cpuModule, lower power modes can be
achieved. During these low power modes, the standby power from the ATX power supply provides power to a
small circuit on the CPU, which is used to watch for a system wake event.
ATX Power Supply Signals
The PCIe/104 Type 2 Bus connectors (CN1 & CN2) provide two ATX style signals., +5V Standby and PSON#. The
+5V Standby rail is used to power certain parts of the cpuModule when the main power supply is turned off, i.e.
during Suspend-to-RAM (S3), Hibernate (S4), or Soft-Off (S5) power modes. The PSON# signal is an active low
open-drain output that signals the power supply to turn on. Use of these signals allows the power consumption
to drop to below 1W during standby modes, and still enable any of the wake events.
Reducing Power Consumption
In addition to the CPU’s low power modes, power consumption can further be reduced by making some
modifications to the BIOS setup. When the following features are disabled in the BIOS, the CPU’s power
consumption will decrease:
•
•
•
•
•
68
Ethernet
USB Ports
SATA Controller
Serial Ports
Multi-Color LED
CMX34GS cpuModule
BDM-610000082
Rev A
Multi-Color LED
The CMX34GS has a Multi-Color LED which can be enabled or disabled in the BIOS setup screen. The color of
the LED indicates the status of the board, as shown in Table 46.
Table 46
LED Colors
Color
Description
Green
Normal Operation
Blue
SATA Activity
Red1
cpuModule is in reset2
Yellow (Red + Green)
cpuModule is in Standby
White (R+G+B)
cpuModule is approaching thermal limit3
Cyan (Blue + Green)
Ethernet Link at 100 Mbps or Bus Stacking Error
Magenta (Blue + Red)
Ethernet Link at 1000 Mbps
Blink
Ethernet Activity
1. If power is applied to the cpuModule while jumper JP5 is installed, the LED will be red. This does not
indicate that the board is in reset
2. Unlike previous generations of RTD cpuModules, the CMX34GS requires both +5V and +12V to be
present to come out of reset. For more information, refer to: Auxiliary Power (CN3)— page 28
3. The LED will remain White until the system is shut down.
The LED can also be controlled manually by writing to I/O Port EA5h, as shown in Table 47 and Table 48.
Table 47
Multi-Color LED I/O Address EA5h
D7
D6
D5
D4
D3
D2
Reserved
Reserved
Reserved
Reserved
Reserved
D1
D0
Multi-Color LED
The following table lists the color displayed and the value written.
Table 48
Manual LED Colors
I/O Port 984h Value
BDM-610000082
Rev A
Color
0x00
Automatic (see Table 46)
0x08
Off (will reduce system power consumption)
0x09
Blue
0x0A
Green
0x0B
Cyan (Green + Blue)
0x0C
Red
0x0D
Magenta (Red + Blue)
0x0E
Yellow (Red + Green)
0x0F
White (Red + Green + Blue)
Chapter 4: Using the cpuModule
69
Reset Status Register
The cpuModule has several different signals on board which can cause a system reset. If a reset occurs, the reset
status register can be used to see which reset or resets have been asserted on the cpuModule.
The user has the ability to see which resets have been asserted. Resets can also be cleared.
•
Examine Resets: Reading from I/O port 0xEA8 will indicate if a reset has been asserted. If a 1 is read,
the corresponding reset has been asserted. If a 0 is read from the bit, the reset has not been asserted
•
Clear Reset: Each reset can be cleared by writing a 1 to the selected bit of I/O port 0xEA8.
Table 49
D7
D6
Thermal Trip
1 = reset asserted
0 = no reset
Reset Status I/O Address EA8h - Read Access
D5
Table 50
D6
Thermal Trip
1 = clear reset
Utility Reset
1 = clear reset
70
CMX34GS cpuModule
D3
D2
D1
Standby Power
1 = reset asserted
0 = no reset
Memory Power
1 = reset asserted
0 = no reset
CPU Core Power
1 = reset asserted
0 = no reset
D0
Main Power
1 = reset asserted
0 = no reset
Memory Term. Power
1 = reset asserted
0 = no reset
System Power
1 = reset asserted
0 = no reset
Utility Reset
1 = reset asserted
0 = no reset
D7
D4
Reset Status I/O Address EA8h - Write Access
D5
D4
System Power
1 = clear reset
D3
D2
Memory Term. Power
1 = clear reset
CPU Core Power
1 = clear reset
Memory Power
1 = clear reset
D1
D0
Main Power
1 = clear reset
Standby Power
1 = clear reset
BDM-610000082
Rev A
Table 51
Reset Status Description and Priorities
I/O Address
EA8h
Reset
Signal
Reset
Priority1
Description
D7
Thermal Trip
2
Indicates that temperature has reached or
exceeded the thermal trip limit. Its assertion
will cause the system to trasition to S5
immediately. For more information, refer to
Hardware-Enforced Thermal Protection on page
66.
D6
Utility Reset
—2
D5
System Power
7
Power supplies that are not for standby power
D4
CPU Core Power
6
Power to the AMD G-Series FT1 CPU
D3
Memory Termination Power
5
Power to onboard memory termination
D2
Memory Power
4
Power to onboard memory banks
D1
Main Power
3
Main input power to cpuModule (+5V, +12V)
D0
Standby Power
1
Standby power supplies
Utility connector push button reset2
1. When a reset is asserted, all resets with a higher reset priority will also be asserted. For example, if the standby power reset is
asserted, all other resets will also be asserted.
2. The BIOS allows the user to change the function of the utility connector’s push button reset, which thereby changes the power
domain it controls (and its reset priority). Even if the push button is not configured as a reset, this bit will always read a 1
(asserted) when the reset button has been pushed.
BDM-610000082
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Chapter 4: Using the cpuModule
71
Features and Settings That Can Affect Boot Time
The boot time of a system is dependent upon numerous system settings as well as devices attached to a system.
This section addresses some devices and settings that can increase or decrease a system’s boot time.
Boot Device Order
The BIOS contains a list of devices to try booting from. If you wish to boot to a particular device (for example, a
hard drive), make sure that it is first in the boot order. This will speed up boot times.
Add-On Cards With BIOS Extensions
Some add-on cards have an integrated BIOS extension. The most common examples are SCSI controllers and
network cards with boot ROMs. During POST, the BIOS executes the card's extension code. This extension code
is third-party code, which is beyond RTD's control. The BIOS extension will most likely increase the boot time.
Exactly how much it increases boot time will depend on the particular card and firmware version.
VGA Controller
VGA controllers have a VGA BIOS that must be initialized during POST. It can take some time to initialize the
VGA BIOS. Exactly how long will depend on the particular VGA controller and BIOS version.
Hard Drive Type
During Hard Drive initialization, each device must be probed. Some devices take longer to probe. 2.5-inch hard
drives tend to take longer than 3.5-inch ones, because they spin at a lower RPM.
Monitor Type
Some monitors take a while to power on. Desktop flat panels are especially slow. This does not affect the actual
boot time of the CPU. However, the CPU may boot before the monitor powers on.
Network (PXE) Boot
The Ethernet controllers on the CMX34GS support Preboot Execution Environment (PXE) which permits the
cpuModule to boot using a network interface. The PXE Boot ROM, which allows booting over the network, may
be disabled in the BIOS to speed up boot time.
72
CMX34GS cpuModule
BDM-610000082
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System Recovery
Reset Button Recovery
The CMX34GS provides several methods for recovering from an incorrectly configured system. In order to enter
the recovery mode, follow the steps below:
1.
Remove power from the system, including standby power.
2.
Press and hold the reset button attached to the Utility Port 2.0 connector.
3.
Apply power to the system while continuing to hold the reset button.
4.
Wait the amount of time shown in Table 52 for the desired recovery mode.
5.
Release the reset button, allowing the system to boot.
Table 52
Reset Button Recovery Modes
Hold Time1
Mode
0-4 seconds
No recovery mode. System will stay in reset while button is pressed.
4-8 seconds
Reserved
8-12 seconds
Serial POST Code Output
1. To assist with timing while the reset button is pushed, the LED will blink OFF at 5 second
intervals.
Load Default BIOS Settings
Loading BIOS defaults allows recovery from an incorrectly configured display device, incorrect boot options, and
many other incorrect settings. It is also a good starting point when making BIOS changes. After restoring defaults,
the BIOS settings should be reviewed and modified as needed.
The default BIOS can be restored by the “Load RTD Defaults” option in the BIOS.
Serial Power-On-Self-Test (POST) Code Output
The POST Codes represent a series of events that take place in a system during the Power On Self Test. If the POST
fails, the system will not boot as expected. Knowing which POST code the failure occurred may help system
debug.
This recovery mode configures serial port connector CN7 as single RS-232, and sends the POST codes on the
transmit pin. The port settings are 115kbps, 8 bits, no parity, one stop bit. When using this recovery mode, the
POST codes can be logged on another computer running terminal software. Contact RTD technical support for
more details.
Note POST Codes over the serial port (CN7) may also be enabled by installing JP5 and JP6 prior to
power cycling the cpuModule. For more information, see Jumper Settings and Locations on page 76.
BDM-610000082
Rev A
Chapter 4: Using the cpuModule
73
74
CMX34GS cpuModule
BDM-610000082
Rev A
Appendix A
Hardware Reference
This appendix provides information on CMX34GS cpuModule hardware, including:
Jumper Settings and Locations—page 76
Onboard PCI/PCIe Devices—page 77
Physical Dimensions—page 78
BDM-610000082
Rev A
Appendix A: Hardware Reference
75
Jumper Settings and Locations
Many cpuModule options are configured by positioning jumpers. Jumpers are labeled on the board as JP
followed by a number.
Figure 7 shows the jumper locations that are used to configure the cpuModule. Table 53 lists the jumpers and
their settings.
JP5
JP6
Figure 7
CMX34GS Jumper Locations (top side)
Table 53
Jumper
76
CMX34GS Jumpers
Pins
Function
Default
JP5
2
Reserved
open
JP6
2
Used to disable the Bus Stacking Error detection. See PCIe/104 Type 2
Compatibility on page 47.
pins 1–2: Disable Bus Stacking Error detection
open: Enable Bus Stacking Error detection (normal operation)
open
JP5 + JP6
2
Used to configure serial port connector CN7 as single RS-232, and sends
the POST codes on the transmit pin. See Serial Power-On-Self-Test (POST)
Code Output on page 73
pins 1–2 ( JP5 and JP6): Enable POST Codes over Serial Port CN7
open: Normal operation
open
CMX34GS cpuModule
BDM-610000082
Rev A
Onboard PCI/PCIe Devices
The CMX34GS cpuModule has several onboard PCI/PCIe devices, all of which are listed in the table below. This
table shows a typical configuration, and the actual devices may change based on BIOS settings.
Table 54
Device ID
Onboard PCI Devices
Vendor ID
Description
1022
Host bridge
1002
VGA-compatible controlle
1314
1002
HD Audio controller
4390
1002
IDE controller
(CN1 & CN2 PCIe/104 SATA links)
4397
1002
Univsersal Serial Bus (USB) OHCI
4396
1002
Univsersal Serial Bus (USB) EHCI
4397
1002
Univsersal Serial Bus (USB) OHCI
4396
1002
Univsersal Serial Bus (USB) EHCI
4385
1002
SMBus (System Management Bus)
439C
1002
IDE controller
(onboard SATA storage)
439D
1002
ISA bridge
4384
1002
PCI-to-PCI bridge
43A0
1002
PCI-to-PCI bridge
43A3
1002
PCI-to-PCI bridge
1700
1022
Host bridge
1701
1022
Host bridge
1702
1022
Host bridge
1703
1022
Host bridge
1704
1022
Host bridge
1718
1022
Host bridge
1716
1022
Host bridge
1510
9804 / 9807
1
1719
1022
Host bridge
10D3
8086
Ethernet Controller (CN20)
10D3
8086
Ethernet Controller (CN30)
1.The device ID for the VGA-compatible controller is 9804 for 615 MHz single-core models,
and 9807 for 1.0 GHz dual-core models
BDM-610000082
Rev A
Appendix A: Hardware Reference
77
Physical Dimensions
Figure 8 shows the mechanical dimensions of the CMX34GS cpuModule.
Figure 8
78
CMX34GS cpuModule
CMX34GS Physical Dimensions (±0.005 inches)
BDM-610000082
Rev A
Appendix B
Troubleshooting
Many problems you may encounter with operation of your CMX34GS cpuModule are due to common errors.
This appendix includes the following sections to help you get your system operating properly.
Common Problems and Solutions —page 80
Troubleshooting a PC/104 System—page 81
How to Obtain Technical Support—page 82
BDM-610000082
Rev A
Appendix B: Troubleshooting
79
Common Problems and Solutions
Table 55 lists some of the common problems you may encounter while using your CMX34GS cpuModule, and
suggests possible solutions.
If you are having problems with your cpuModule, review this table before contacting RTD Technical Support.
Table 55
Troubleshooting
Problem
Additional Symptoms
Possible Cause(s)
cpuModule does not boot
(no video output)
LED is red
(in reset)
Input power is inadequate. Refer to Chapter 1, Electrical Characteristics.
Verify input voltages are correct. If power is supplied via CN3, check for
cabling issues.
Malfunctioning peripheral card. Remove all peripheral cards from the
system.
LED is yellow
(in standby)
cpuModule is in “Soft Off” due to operating system shutdown. Press
power button to wake.
ATX power supply is not turning on. Check jumpers on power supply.
Verify PSON# signal.
LED is cyan
(bus stacking error)
See Chapter 3, PCIe/104 Type 2 Compatibility
LED is green
(normal operation)
cpuModule may be booted, but video is not connected properly.
Attach a keyboard and verify the operation of the Num Lock and Caps
Lock LEDs. If they respond as expected, the cpuModule is booted.
Check the video cable connections.
Video output may have been disabled in the BIOS. Try loading BIOS
defaults per Chapter 4, System Recovery.
If a PCI device is installed, the slot selection switch/jumpers may not be
set correctly.
Peripheral card may be interfering with boot sequence. Remove all
peripheral cards from the system.
cpuModule reboots
unexpectedly
cpuModule is running
Windows
By default, Windows will automatically reboot when a Bugcheck (Blue
Screen) is triggered. Disable this feature in the Control Panel. This will
allow you to see the error and identify the root cause.
cpuModule is powered via
Auxiliary Power Connector
(CN3)
Power cabling issues. Verify all pins on CN3 are reliably connected with
proper gauge wires.
Power supply noise or current limiting. Check power pins with an
oscilloscope and verify they remain in range.
Power supply may not respond quickly enough to changes in power
consumption. Switch to a different power supply (a PCI Express power
supply is recommended)
Peripheral card(s) installed
Peripheral card(s) may be overloading the power supply. Reduce the
system to just the cpuModule and power supply and see if the problem
re-appears. (Note that CN3 is intended for powering the cpuModule
only.)
cpuModule does not boot
to USB device
USB device has a high power
draw (e.g. DVD or hard drive)
Some USB devices are not fully compliant and draw too much current.
Consider switching to a self-powered USB device with its own AC/DC
power supply.
Date/time not saved when
system is off
No RTC battery
A battery must be attached to the Utility Port 2.0 connector (CN5) to
maintain date/time when main power is removed. For a list of alternate
battery inputs, refer to Real Time Clock Control—page 62.
System performance lower
than expected
LED is white
cpuModule is overheating and the processor is throttling. Increase the
cooling (more airflow, larger heatsink, etc).
80
CMX34GS cpuModule
BDM-610000082
Rev A
Troubleshooting a PC/104 System
If you have reviewed the preceding table and still cannot isolate the problem with your CMX34GS cpuModule,
please try the following troubleshooting steps. Even if the resulting information does not help you find the
problem, it will be very helpful if you need to contact technical support.
BDM-610000082
1.
Simplify the system. Remove items one at a time and see if one particular item seems to cause the
problem.
2.
Swap components. Try replacing items in the system one-at-a-time with similar items.
Rev A
Appendix B: Troubleshooting
81
How to Obtain Technical Support
If after following the above steps, you still cannot resolve a problem with your CMX34GS cpuModule, please
gather the following information:
•
•
•
•
•
•
cpuModule model, BIOS version, and serial number
List of all boards in system
List of settings from cpuModule Setup program
Printout of autoexec.bat and config.sys files (if applicable)
Description of problem
Circumstances under which problem occurs
Then contact RTD Technical Support:
Phone: 814-234-8087
82
Fax:
814-234-5218
E-mail:
techsupport@rtd.com
CMX34GS cpuModule
BDM-610000082
Rev A
Appendix C
IDAN™ Dimensions and Pinout
Like all other RTD PC/PCI-104 and PCIe/104 modules, cpuModules can be packaged in Intelligent Data
Acquisition Node (IDAN) frames, which are milled aluminum frames with integrated heat sinks and heat pipes
for fanless operation. RTD modules installed in IDAN frames are called building blocks. IDAN building blocks
maintain the simple but rugged stacking concept of PC/PCI-104 and PCIe/104. Each RTD module is mounted in
its own IDAN frame and all I/O connections are brought to the walls of each frame using standard PC connectors.
On the CMX34GS, no connections are made from module to module internal to the system other than through
the PCIe/104 Type 2 bus, enabling quick interchangeability and system expansion without hours of rewiring and
board redesign.
The CMX34GS cpuModule can also be purchased as part of a custom-built RTD HiDAN™ or HiDANplus™ High
Reliability Intelligent Data Acquisition Node. This appendix provides the dimensions and pinouts of the
CMX34GS installed in an IDAN frame. Contact RTD for more information on high reliability IDAN, HiDAN, and
HiDANplus PC/PCI-104 systems.
IDAN—Adhering to the PC/PCI-104 and PCIe/104
stacking concept, IDAN allows you to build a
customized system with any combination of RTD
modules.
IDAN Heat Pipes—Advanced heat pipe technology
maximizes heat transfer to heat sink fins.
HiDANplus—Integrating the modularity of
IDAN with the ruggedization of HiDAN,
HiDANplus enables connectors on all system
frames, with signals running between frames
through a dedicated stack-through raceway.
BDM-610000082
Rev A
Appendix C: IDAN™ Dimensions and Pinout
83
IDAN Dimensions and Connectors
9-pin D (male)
module P/N: Adam Tech DE09PD
mating P/N: Adam Tech DE09SD
25-pin D (female)
module P/N: Adam Tech DB25SD
mating P/N: Adam Tech DB25PD
USB Connector
module P/N: Series “A” Receptacle
mating P/N: Series “A” Plug
CN7
CN8
CN5
CN27
CN6
DisplayPort Connector
module P/N: Molex 47272 series
mating P/N: Molex 68783 series
9-pin D (male)
module P/N: Adam Tech DE09PD
mating P/N: Adam Tech DE09SD
CN19
CN20
CN18
CN17
CN30
15-pin high-density D (female)
module P/N: Adam Tech HDT15SD
mating P/N: Adam Tech HDT15PD
Figure 9
1.
84
IDAN-CMX34GS Connectors1
Use 40mm for this frame when calculating bolt lengths.
CMX34GS cpuModule
BDM-610000082
Rev A
IDAN Contents
The IDAN-CMX34GS contains both a CMX34GS cpuModule and a SATA34106 carrier for a 2.5” SATA drive. Also
inside the IDAN-CMX34GS unit is a CMOS battery which is connected to the battery input connection of the
cpuModule’s Utility Port 2.0 connector. The frame of the IDAN-CMX34GS brings out the cpuModule’s
multi-color LED as well as the cpuModule’s reset button. (The cpuModule’s power button is not accessible from
the exterior of the frame, but the reset button is configurable as as a power button through the BIOS.)
For more information on cpuModule’s battery input and reset button input on the Utility Port 2.0 connector,
refer to the Utility Port 2.0 Connector (CN5) on page 29.
BDM-610000082
Rev A
Appendix C: IDAN™ Dimensions and Pinout
85
External I/O Connections
Table 56
Table 57
COM1/COM2 (Single Port Mode)— 9-Pin D Connector (male)
CPU Pin
IDAN Pin
(DB-9)
Single
RS-232
Single
RS-422
Single
RS-485
1
1
DCD
TXD–
D–
2
6
DSR
—
—
3
2
RXD
TXD+
D+
4
7
RTS
—
—
5
3
TXD
RXD+
—
6
8
CTS
—
—
7
4
DTR
RXD–
—
8
9
RI
—
—
9,10
5
GND
GND
GND
COM1/COM2 (Dual Port Mode)— 9-Pin D Connector (male)
CPU Pin
IDAN Pin
(DB-9)
Dual
RS-232
Dual
RS-422
Dual
RS-485
1
1
DCD1
TXD1-
D1-
3
2
RXD1
TXD1+
D1+
5
3
TXD1
RXD1+
—
7
4
DTR1
RXD1-
—
9,10
5
GND
GND
GND
2
6
DSR1
TXD2-
D2-
4
7
TXD2
TXD2+
D2+
6
8
RXD2
RXD2+
—
8
9
RI1
RXD2-
—
Table 58
86
CMX34GS cpuModule
aDIO — 25-Pin D Connector (female)
IDAN Pin #
aDIO Port
CPU Pin #
1
P0-0
1
2
P0-2
3
3
P0-4
5
4
P0-6
7
5
Strobe 0
9
6
P1-0
11
7
P1-2
13
8
GND
15
9
reserved
-
BDM-610000082
Rev A
Table 58
BDM-610000082
Rev A
aDIO — 25-Pin D Connector (female)
IDAN Pin #
aDIO Port
CPU Pin #
10
reserved
-
11
reserved
-
12
reserved
-
13
reserved
-
14
P0-1
2
15
P0-3
4
16
P0-5
6
17
P0-7
8
18
Strobe 1
10
19
P1-1
12
20
P1-3
14
21
+5 V
16
22
reserved
-
23
reserved
-
24
reserved
-
25
reserved
-
Appendix C: IDAN™ Dimensions and Pinout
87
Table 59
IDAN Pin #
88
CMX34GS cpuModule
SVGA — 15-Pin High Density D Connector (female)
Signal
Function
CPU Pin #
1
Red
Red Analog Output
4
2
Green
Green Analog Output
6
3
Blue
Blue Analog Output
8
4
Reserved
Reserved
—
5
GND
Ground
9
6
GND
Ground
9
7
GND
Ground
9
8
GND
Ground
10
9
+5 V
+ 5 Volts
7
10
GND
Ground
10
11
Reserved
Reserved
—
12
DDC Data
Monitor data
5
13
HSYNC
Horizontal Sync
2
14
VSYNC
Vertical Sync
1
15
DDC CLK
Monitor Clock
3
BDM-610000082
Rev A
Table 60
DisplayPort Connector
Pin
Signal
Standard Function
Dual-mode (DP++) Function
(DVI / HDMI mode)1
In/Out
1
LN0+
Main Link, Lane 0 (positive)
TMDS Channel 2 (positive)
out
2
GND
Ground
Ground
out
3
LN0-
Main Link, Lane 0 (negative)
TMDS Channel 2 (negative)
out
4
LN1+
Main Link, Lane 1 (positive)
TMDS Channel 1 (positive)
out
5
GND
Ground
Ground
out
6
LN1-
Main Link, Lane 1 (negative)
TMDS Channel 1 (negative)
out
7
LN2+
Main Link, Lane 2 (positive)
TMDS Channel 0 (positive)
out
8
GND
Ground
Ground
out
9
LN2-
Main Link, Lane 2 (negative)
TMDS Channel 0 (negative)
out
10
LN3+
Main Link, Lane 3 (positive)
TMDS Clock (positive)
out
11
GND
Ground
Ground
out
12
LN3-
Main Link, Lane 3 (negative)
TMDS Clock (negative)
out
13
CFG1
Configuration Pin 1
Cable Adapter Detect
out
14
CFG2
Configuration Pin 2
Consumer Electronics Control2
out
15
AUX+
Auxiliary Channel (positive)
DDC Clock
16
GND
Ground
Ground
17
AUX-
Auxiliary Channel (negative)
DDC Data
18
HPD
Hot Plug Detect
Hot Plug Detect
in
19
DPG
Return for DPV
Return for DPV
out
20
DPV
+3.3V DC Power
+3.3V DC Power
out
in/out
out
in/out
1.Requires special passive adapter
2.HDMI mode only
Facing DisplayPort connector, the pinout is:
19
17
15
13
11
9
7
5
3
1
DPG
AUX-
AUX+
CFG1
GND
LN2-
LN2+
GND
LN0-
LN0+
DPV
HPD
GND
CFG2
LN3-
LN3+
GND
LN1-
LN1+
GND
20
18
16
14
12
10
8
6
4
2
BDM-610000082
Rev A
Appendix C: IDAN™ Dimensions and Pinout
89
Table 61
IDAN Pin #
Signal
Function
Mode
1
VCC1
+5 V to USB1
output
2
Data USB1–
USB1 Data–
input/output
3
Data USB1+
USB1 Data+
input/output
4
GND
Ground
—
5
GND
Ground
—
6
VCC2
+5 V to USB2
output
7
Data USB2–
USB2 Data–
input/output
8
Data USB2+
USB2 Data+
input/output
9
GND
Ground
—
Table 62
90
CMX34GS cpuModule
USB — 9-Pin D Connector (male)
Ethernet — 9-Pin D Connector (female)
IDAN Pin #
RJ-45 Pin
Signal
CPU Pin #
1
3
B+ (RX+)
1
2
4
C+
3
3
1
A+ (TX+)
5
4
7
D+
7
5
—
Ground
9
6
6
B- (RX–)
2
7
5
C-
4
8
2
A- (TX–)
6
9
8
D-
8
BDM-610000082
Rev A
Appendix D
Additional Information
Application Notes
RTD offers many application notes that provide assistance with the unique feature set of the CMX34GS
cpuModule. For the latest application notes, refer to the RTD website.
Drivers and Example Programs
To obtain the latest versions of drivers and example programs for this cpuModule, refer to the RTD website.
Interrupt Programming
For more information about interrupts and writing interrupt service routines, refer to the following book:
Interrupt-Driven PC System Design
by Joseph McGivern
ISBN: 0929392507
Serial Port Programming
For more information about programming serial port UARTs, consult the following book:
Serial Communications Developer's Guide
by Mark Nielson
ISBN: 0764545701
PC/104 Specifications
A copy of the latest PC/104specifications can be found on the webpage for the PC/104 Embedded Consortium:
http://www.pc104.org
BDM-610000082
Rev A
Appendix D: Additional Information
91
92
CMX34GS cpuModule
BDM-610000082
Rev A
Appendix E
Limited Warranty
RTD Embedded Technologies, Inc. warrants the hardware and software products it manufactures and produces
to be free from defects in materials and workmanship for one year following the date of shipment from RTD
Embedded Technologies, Inc. This warranty is limited to the original purchaser of product and is not transferable.
During the one year warranty period, RTD Embedded Technologies will repair or replace, at its option, any
defective products or parts at no additional charge, provided that the product is returned, shipping prepaid, to
RTD Embedded Technologies. All replaced parts and products become the property of RTD Embedded
Technologies. Before returning any product for repair, customers are required to contact the factory for a Return
Material Authorization number.
This limited warranty does not extend to any products which have been damaged as a result of accident, misuse,
abuse (such as: use of incorrect input voltages, improper or insufficient ventilation, failure to follow the
operating instructions that are provided by RTD Embedded Technologies, “acts of god” or other contingencies
beyond the control of RTD Embedded Technologies), or as a result of service or modification by anyone other
than RTD Embedded Technologies. Except as expressly set forth above, no other warranties are expressed or
implied, including, but not limited to, any implied warranties of merchantability and fitness for a particular
purpose, and RTD Embedded Technologies expressly disclaims all warranties not stated herein. All implied
warranties, including implied warranties for merchantability and fitness for a particular purpose, are limited to
the duration of this warranty. In the event the product is not free from defects as warranted above, the
purchaser's sole remedy shall be repair or replacement as provided above. Under no circumstances will RTD
Embedded Technologies be liable to the purchaser or any user for any damages, including any incidental or
consequential damages, expenses, lost profits, lost savings, or other damages arising out of the use or inability to
use the product.
Some states do not allow the exclusion or limitation of incidental or consequential damages for consumer
products, and some states do not allow limitations on how long an implied warranty lasts, so the above
limitations or exclusions may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
RTD Embedded Technologies, Inc.
103 Innovation Blvd.
State College PA 16803-0906
USA
Website: www.rtd.com
BDM-610000082
Rev A
Appendix E: Limited Warranty
93
94
CMX34GS cpuModule
BDM-610000082
Rev A