rtd DM35820HR User manual

RTD Embedded Technologies, Inc.
AS9100 and ISO 9001 Certified
DM35820HR
DM9820HR
DM8820HR
DM7820HR
Versatile High Speed Digital I/O
User’s Manual
BDM-610010036 Rev. E

RTD Embedded Technologies, Inc.
103 Innovation Boulevard
State College, PA 16803 USA
Telephone: [phone]
Fax: [phone]
www.rtd.com
[email protected]
[email protected]

RTD Embedded Technologies, Inc. | www.rtd.com iii DMx820 User’s Manual
Revision History
Rev A Initial Release
Rev B Better DREQ description. Improved description of FIFO. Improved description of FIFOn_CON_STAT. Corrected PWM Period
formula. Added DM9820 information.
Rev C Added DM8820. Added AS9100.
Rev D Changed to new manual format. Added ability to retrigger programmable clocks. Added register to read programmable clock
current value. Added FIFO empty flag as a peripheral output. Added IDAN section.
Rev E Added ordering part number “IDAN-DM35820HR-68D” to the ordering options listed in table 1.
Added a dimensional drawing to section 3.2 which shows the location of the I/O headers.
Improved title for Table 6, and corrected it so that CN11 pin 2 indicates “STROBE 1”.
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.
Copyright © 2018 by RTD Embedded Technologies, Inc. All rights reserved.

RTD Embedded Technologies, Inc. | www.rtd.com iv DMx820 User’s Manual
Table of Contents
1Introduction 8
Product Overview........................................................................................................................................................................ 8
Board Features ........................................................................................................................................................................... 8
Ordering Information................................................................................................................................................................... 9
Contact Information .................................................................................................................................................................... 9
1.4.1 Sales Support ...................................................................................................................................................... 9
1.4.2 Technical Support................................................................................................................................................ 9
2Specifications 10
Operating Conditions ................................................................................................................................................................ 10
Electrical Characteristics .......................................................................................................................................................... 10
Notes ............................................................................................................................................................................ 10
3Board Connection 11
Board Handling Precautions ..................................................................................................................................................... 11
Physical Characteristics............................................................................................................................................................ 11
Connectors and Jumpers.......................................................................................................................................................... 12
3.3.1 DM7820HR and DM8820HR ............................................................................................................................. 12
3.3.1 DM35820HR and DM9820HR ........................................................................................................................... 13
3.3.2 External I/O Connectors..................................................................................................................................... 13
Connector CN10 –Digital Input / Output...................................................................................................................... 13
Connector CN11 –Digital Input / Output...................................................................................................................... 14
3.3.3 Bus Connectors ................................................................................................................................................. 15
PC/104-Express Bus Connectors (DM9820HR Only).................................................................................................. 15
PC/104-Plus PCI Connector......................................................................................................................................... 15
PC/104 ISA Connectors (DM7820HR Only)................................................................................................................. 16
Steps for Installing .................................................................................................................................................................... 17
4IDAN Connections 18
Module Handling Precautions................................................................................................................................................... 18
62D - Physical Characteristics.................................................................................................................................................. 18
62D - Connectors...................................................................................................................................................................... 19
68S - Physical Characteristics .................................................................................................................................................. 20
68S –Connectors ..................................................................................................................................................................... 21
Bus Connectors ........................................................................................................................................................................ 22
PC/104-Express Bus Connectors (DM9820HR Only).................................................................................................. 22
PC/104-Plus PCI Connector......................................................................................................................................... 22
PC/104 ISA Connectors (DM7820HR Only)................................................................................................................. 22
Steps for Installing .................................................................................................................................................................... 23
5Functional Description 24
Block Diagram........................................................................................................................................................................... 24
Internal Architecture.................................................................................................................................................................. 25
FIFOs........................................................................................................................................................................................ 25
Board Interrupts ........................................................................................................................................................................ 26
Advanced Triggering Examples................................................................................................................................................ 26
6Board Operation and Programming 28
PCI Interface............................................................................................................................................................................. 28

RTD Embedded Technologies, Inc. | www.rtd.com vDMx820 User’s Manual
Device Memory......................................................................................................................................................................... 28
6.2.1 Memory Map Overview...................................................................................................................................... 28
Detailed Register Description ................................................................................................................................................... 37
6.3.1 System Block ..................................................................................................................................................... 37
FPGA_VERSION.......................................................................................................................................................... 37
SVN_VERSION............................................................................................................................................................ 37
BOARD_RESET........................................................................................................................................................... 38
BRD_STAT................................................................................................................................................................... 38
INT_ENABLE................................................................................................................................................................ 38
INT_STATUS................................................................................................................................................................ 39
6.3.2 Standard I/O....................................................................................................................................................... 40
PORTx_OUTPUT......................................................................................................................................................... 41
PORTx_INPUT............................................................................................................................................................. 41
PORTx_TRISTATE ...................................................................................................................................................... 42
PORTx_MODE............................................................................................................................................................. 42
PORTx_PERIPH_SEL_L ............................................................................................................................................. 42
PORTx_PERIPH_SEL_H............................................................................................................................................. 42
STROBE_STATUS....................................................................................................................................................... 43
6.3.3 82C54 Timer Counter Control............................................................................................................................ 44
TC_ID ........................................................................................................................................................................... 44
TC_INT ......................................................................................................................................................................... 44
TC_xy_CONTROL........................................................................................................................................................ 45
6.3.4 FIFO Channel n ................................................................................................................................................. 46
FIFOn_ID...................................................................................................................................................................... 46
FIFOn_INT.................................................................................................................................................................... 46
FIFOn_IN_CLK............................................................................................................................................................. 46
FIFOn_OUT_CLK......................................................................................................................................................... 47
FIFOn_IN_DATA_DREQ.............................................................................................................................................. 48
FIFOn_CON_STAT ...................................................................................................................................................... 48
FIFOn_RW_PORT ....................................................................................................................................................... 49
6.3.5 Programmable Clock n ...................................................................................................................................... 49
PROGCLKn_ID ............................................................................................................................................................ 49
PROGCLKn_MODE ..................................................................................................................................................... 49
PRGCLKn_CLK............................................................................................................................................................ 50
PRGCLKn_START_STOP ........................................................................................................................................... 50
PROGCLKn_PERIOD .................................................................................................................................................. 52
PROGCLKn_COUNT ................................................................................................................................................... 52
6.3.6 Advanced Interrupt n.......................................................................................................................................... 53
ADVINTn_ID................................................................................................................................................................. 53
ADVINTn_INT_MODE.................................................................................................................................................. 53
ADVINTn_CLK ............................................................................................................................................................. 53
ADVINTn_PORTx_MASK ............................................................................................................................................ 54
ADVINTn_PORTx_CMP............................................................................................................................................... 54
ADVINTn_PORTx_CAPT............................................................................................................................................. 54
6.3.7 Dual Incremental Encoder n .............................................................................................................................. 55
INCENCn_ID ................................................................................................................................................................ 55
INCENCn_INT.............................................................................................................................................................. 56
INCENCn_CLK............................................................................................................................................................. 57
INCENCn_MODE......................................................................................................................................................... 57
INCENCn_VALUEy ...................................................................................................................................................... 58
6.3.8 Quad Pulse Width Modulator n.......................................................................................................................... 59
PWMn_ID ..................................................................................................................................................................... 59
PWMn_MODE .............................................................................................................................................................. 59
PWMn_CLK.................................................................................................................................................................. 60
PWMn_PERIOD........................................................................................................................................................... 60
PWMn_WIDTHx ........................................................................................................................................................... 60
6.3.9 82C54 Timer Counter n ..................................................................................................................................... 61
DESCRIPTION OF OPERATION................................................................................................................................. 61
Control Word and Count Value Program...................................................................................................................... 61
Mode definition ............................................................................................................................................................. 62
Reading Counter Values .............................................................................................................................................. 66
PLX Registers........................................................................................................................................................................... 70
6.4.1 Memory Map Overview...................................................................................................................................... 70
6.4.2 DMA Register Description ................................................................................................................................. 70
DMAMODEn................................................................................................................................................................. 70

RTD Embedded Technologies, Inc. | www.rtd.com vi DMx820 User’s Manual
DMAPADRn.................................................................................................................................................................. 72
DMALAPADRn ............................................................................................................................................................. 72
DMASIZn...................................................................................................................................................................... 72
DMAPRn....................................................................................................................................................................... 73
DMACSRn.................................................................................................................................................................... 73
DMAARB ...................................................................................................................................................................... 74
DMATHR ...................................................................................................................................................................... 74
DMADAn....................................................................................................................................................................... 76
INTCSR ........................................................................................................................................................................ 76
7Troubleshooting 79
8Additional Information 80
PC/104 Specifications............................................................................................................................................................... 80
PCI and PCI Express Specification .......................................................................................................................................... 80
PLX PCI9056 ............................................................................................................................................................................ 80
82C54 Timer/Counter Programming......................................................................................................................................... 80
Interrupt Programming.............................................................................................................................................................. 80
9Limited Warranty 81

RTD Embedded Technologies, Inc. | www.rtd.com vii DMx820 User’s Manual
Table of Figures
Figure 1: Board Dimensions (DM9820HR shown) ................................................................................................................................................. 11
Figure 1: DM7820HR and DM8820HR Connectors and Jumpers ......................................................................................................................... 12
Figure 2: DM7820HR and DM8820HR Connectors and Jumpers ......................................................................................................................... 13
Figure 3: Example 104™Stack............................................................................................................................................................................... 17
Figure 4: IDAN Dimensions .................................................................................................................................................................................... 18
Figure 5: IDAN Dimensions .................................................................................................................................................................................... 20
Figure 6: Example IDAN System ............................................................................................................................................................................ 23
Figure 7: DMx820HR Block Diagram...................................................................................................................................................................... 24
Figure 8: Digital I/O Block Diagram ........................................................................................................................................................................ 25
Figure 9: Interrupt Diagram..................................................................................................................................................................................... 26
Figure 10: Digital I/O Block Diagram ...................................................................................................................................................................... 41
Figure 11: Incremental Encoder Signals ................................................................................................................................................................ 55
Figure 12: PWM Output .......................................................................................................................................................................................... 59
Figure 13: Counter latching executed for counter #1 (Read/Load 2-byte setting)................................................................................................. 67
Table of Tables
Table 1: Ordering Options ........................................................................................................................................................................................ 9
Table 2: Operating Conditions ................................................................................................................................................................................ 10
Table 3: Electrical Characteristics .......................................................................................................................................................................... 10
Table 4: CN10 Pin Assignments............................................................................................................................................................................. 13
Table 5: CN11 Pin Assignments............................................................................................................................................................................. 14
Table 6: IDAN “-62D” CN10 and CN11 Pin Assignments....................................................................................................................................... 19
Table 7: CN10 Pin Assignments............................................................................................................................................................................. 21
Table 8: PCI Configuration Registers ..................................................................................................................................................................... 28
Table 9: DMx820HR Memory Map ......................................................................................................................................................................... 29
Table 10: Peripheral Outputs.................................................................................................................................................................................. 43
Table 11: Incremental Encoder Inputs.................................................................................................................................................................... 55
Table 12: Select Counter SC[1:0]: Selection of set counter ................................................................................................................................... 61
Table 13: Read/Load RL[1:0]: Count Value Reading/Loading format setting ........................................................................................................ 61
Table 14: Mode M[2:0]: Operation waveform mode setting.................................................................................................................................... 61
Table 15: BCD: Operation count mode setting....................................................................................................................................................... 62
Table 16: PLX DMx820HR Memory Map ............................................................................................................................................................... 70
Table 17: DMA Threshold Nybble Values............................................................................................................................................................... 75

RTD Embedded Technologies, Inc. | www.rtd.com 8DMx820 User’s Manual
1Introduction
Product Overview
The DM7820HR/DM8820HR/DM9820HR is designed to provide high speed digital I/O for PC/104-Plus, PCI-104, PCI/104-Express, and
PCIe/104 Systems. It interfaces with the PCI or PCI Express bus and uses large FIFOs and DMA transfers to allow for efficient data
management. Several peripherals, including Pulse Width Modulators, Incremental Encoders, and Programmable Clocks are also provided.
Board Features
•Digital I/O
o48 Diode protected I/O lines
o24 mA source and sink current
oCompatible with DMR and DOP expansion boards
•Deep FIFOs with DMA
oTwo 2M-Word FIFOs
oEach FIFO is attached to a separate DMA channel
o25 MHz bursted throughput
o12.5 MHZ continuous throughput
oFIFO can be looped
•Pulse Width Modulators
oEight PWM outputs
oSingle-ended or Differential Outputs
o16-bit resolution
oSeparate period and width clocks provide full resolution at low duty cycles
oOptional Interrupt generations
•Incremental Encoders
oFour Incremental Encoder channels
oSingle-ended or Pseudo-differential Inputs
oVariable frequency input filtering
oMax input speed of 40ns per transition
o16-bit resolution
oTwo channels can be combined for 32-bit resolution
oConnect to FIFO for position sampling
•Advanced Interrupts
oTwo Advanced Interrupt Modules
oInterrupt on Match, Change, or Strobe
oAll 48 bits are captured when the interrupt is generated
oAny combination of the 48 bits can be monitored
•Programmable Clocks
oFour programmable clocks
oMaximum frequency of 25 MHz
oCan be started and stopped by an interrupt or another clock
oContinuous or One-Shot Operation
oCan be cascaded
•82C54 Timer/Counters
oSix Timer/Counter Channels
oFully programmable
oInput clock and gate driven from internal or external source
o10 MHz maximum input

RTD Embedded Technologies, Inc. | www.rtd.com 9DMx820 User’s Manual
Ordering Information
The DMx820HR is available with the following options:
Table 1: Ordering Options
Part Number
Description
DM35820HR
PCIe/104 High-Speed Digital I/O DAQ Module
DM9820HR
PCI/104-Express High-Speed Digital I/O DAQ Module
DM8820HR
PCI-104 High-Speed Digital I/O DAQ Module
DM7820HR
PC/104-Plus High-Speed Digital I/O DAQ Module
IDAN-DM35820HR-62D
PCIe/104 High-Speed Digital I/O DAQ Module in IDAN enclosure
(with 62-pin “D” connectors)
IDAN-DM35820HR-68D
PCIe/104 High-Speed Digital I/O DAQ Module in IDAN enclosure
(with 68-pin “D” connectors)
IDAN-DM9820HR-62D
PCI/104-Express High-Speed Digital I/O DAQ Module in IDAN enclosure
IDAN-DM8820HR-68S
PCI-104 High-Speed Digital I/O DAQ Module in IDAN enclosure
IDAN-DM7820HR-68S
PC/104-Plus High-Speed Digital I/O DAQ Module in IDAN enclosure
The Intelligent Data Acquisition Node (IDAN™) building block can be used in just about any combination with other IDAN building blocks to
create a simple but rugged 104™ stack. This module can also be incorporated in a custom-built RTD HiDAN™ or HiDANplus High Reliability
Intelligent Data Acquisition Node. Contact RTD sales for more information on our high reliability systems.
Contact Information
1.4.1 SALES SUPPORT
For sales inquiries, you can contact RTD Embedded Technologies sales via the following methods:
Phone: [phone] Monday through Friday, 8:00am to 5:00pm (EST).
E-Mail: [email protected]
1.4.2 TECHNICAL SUPPORT
If you are having problems with you system, please try the steps in the Troubleshooting section of this manual on page79.
For help with this product, or any other product made by RTD, you can contact RTD Embedded Technologies technical support via the
following methods:
Phone: [phone] Monday through Friday, 8:00am to 5:00pm (EST).
E-Mail: [email protected]

RTD Embedded Technologies, Inc. | www.rtd.com 10 DMx820 User’s Manual
2Specifications
Operating Conditions
Table 2: Operating Conditions
Symbo
l
Parameter
Test Condition
Min
Max
Unit
Vcc5
5V Supply Voltage
4.75
5.25
V
Ta
Operating Temperature
-40
+85
C
Ts
Storage Temperature
-55
+125
C
RH
Relative Humidity
Non-Condensing
0
90%
%
MTBF
Mean Time Before Failure
Telcordia Issue 2
30°C, Ground benign,
controlled
3,292,579
Hour
s
Electrical Characteristics
Table 3: Electrical Characteristics
Symbo
l
Parameter
Test Condition
Min
Max
Unit
P
Power Consumption
Vcc5 = 5.0V
1.5
W
Icc5
5V Input Supply Current
Active
300
mA
PCI Bus
VIH
Input High Voltage
1.65
5.5
V
VIL
Input Low Voltage
0
0.8
V
IIL
PCI Input Leakage
0<VI<VIO
-10
10
uA
IOZ
PCI Hi-Z Leakage
0<VI<VIO
10
uA
VOH
Output High Voltage
2.97
V
VOL
Output Low Voltage
0.33
V
PCIe Bus
Differential Output Voltage
0.8
1.2
V
DC Differential TX
Impedance
95.2
116.9
Ω
Differential Input Voltage
0.175
3.3
V
DC Differential RX
Impedance
92.7
115.8
Ω
Electrical Idle Detect
Threshold
61
173
mV
Digital I/O
VIH
Input High Voltage
2.0
5.5
V
VIL
Input Low Voltage
-0.5
0.8
V
VOH
Output High Voltage
IOH = -24mA
2.4
V
VOL
Output Low Voltage
IOL = 24mA
0.4
V
Notes
1. DIO Vin DC overshoot must be limited to either 5.5V or 10mA and DC undershoot must be limited to
either -0.5V or 10mA.
2. DIO pins may be driven to - 2.0V or + 7.0V provided these voltages last no longer than 11ns with a forcing
current no greater than 100mA.
3. Inputs are terminated with 33Ω resistors and protection diodes.
4. DIO inputs should not be tied to voltages when the board is not powered.

RTD Embedded Technologies, Inc. | www.rtd.com 11 DMx820 User’s Manual
3Board Connection
Board Handling Precautions
To prevent damage due to Electrostatic Discharge (ESD), keep your board in its antistatic bag until you are ready to install it into your system.
When removing it from the bag, hold the board at the edges, and do not touch the components or connectors. Handle the board in an antistatic
environment, and use a grounded workbench for testing and handling of your hardware.
Physical Characteristics
•Weight: Approximately 100 g (0.22 lbs.)
•Dimensions: 90.17 mm L x 95.89 mm W (3.550 in L x 3.775 in W)
Figure 1: Board Dimensions (DM9820HR shown)

RTD Embedded Technologies, Inc. | www.rtd.com 12 DMx820 User’s Manual
Connectors and Jumpers
3.3.1 DM7820HR AND DM8820HR
The following diagram shows the location of all connectors and jumpers on the DM7820HR and DM8820HR. The DM7820HR and DM8820HR
are identical, except that the DM8820HR does not have the PC/104 (ISA) connector populated. For a description of each jumper and
connector, refer to the following sections.
Figure 2: DM7820HR and DM8820HR Connectors and Jumpers
PC/104 Connector
(DM7820 Only)
PC/104-Plus Connector
CN11
Digital I/O
B1
Force Three Master
SW1
Slot Selection
JP2
PCI Master
Control
CN10
Digital I/O

RTD Embedded Technologies, Inc. | www.rtd.com 13 DMx820 User’s Manual
3.3.1 DM35820HR AND DM9820HR
The following diagram shows the location of all connectors and jumpers on the DM9820HR. For a description of each jumper and connector,
refer to the following sections.
Figure 3: DM7820HR and DM8820HR Connectors and Jumpers
3.3.2 EXTERNAL I/O CONNECTORS
NOTE: Pin 1 can be identified by a square solder pad. Pins 2 –50 have
round solder pads.
Connector CN10 –Digital Input / Output
Connector CN10 provides 24 digital input/output lines, along with a +5V pin and ground pins. The pin assignments for CN10 are shown in
Table 1.
Table 4: CN10 Pin Assignments
Signal
Pin
Pin
Signal
P2[7]
1
2
Strobe2
P2[6]
3
4
GND
P2[5]
5
6
GND
P2[4]
7
8
GND
P2[3]
9
10
GND
P2[2]
11
12
GND
P2[1]
13
14
GND
P2[0]
15
16
GND
PC/104-Express Connector
PC/104-Plus Connector (DM9820HR only)
CN11
Digital I/O
CN10
Digital I/O

RTD Embedded Technologies, Inc. | www.rtd.com 14 DMx820 User’s Manual
Table 4: CN10 Pin Assignments
Signal
Pin
Pin
Signal
P0[15]
17
18
GND
P0[14]
19
20
GND
P0[13]
21
22
GND
P0[12]
23
24
GND
P0[11]
25
26
GND
P0[10]
27
28
GND
P0[9]
29
30
GND
P0[8]
31
32
GND
P0[7]
33
34
GND
P0[6]
35
36
GND
P0[5]
37
38
GND
P0[4]
39
40
GND
P0[3]
41
42
GND
P0[2]
43
44
GND
P0[1]
45
46
GND
P0[0]
47
48
GND
+5V, 2A max
49
50
GND
See Table 10 on page 43Table 10 and Table 11 on
page 55 for peripheral pin assignments.
Connector CN11 –Digital Input / Output
Connector CN11 provides 24 digital input/output lines, along with a +5V pin and ground pins. The pin assignments for CN11 are shown in
Table 2.
Table 5: CN11 Pin Assignments
Signal
Pin
Pin
Signal
P2[15]
1
2
Strobe1
P2[14]
3
4
GND
P2[13]
5
6
GND
P2[12]
7
8
GND
P2[11]
9
10
GND
P2[10]
11
12
GND
P2[9]
13
14
GND
P2[8]
15
16
GND
P1[15]
17
18
GND
P1[14]
19
20
GND
P1[13]
21
22
GND
P1[12]
23
24
GND
P1[11]
25
26
GND
P1[10]
27
28
GND
P1[9]
29
30
GND
P1[8]
31
32
GND
P1[7]
33
34
GND
P1[6]
35
36
GND
P1[5]
37
38
GND
P1[4]
39
40
GND
P1[3]
41
42
GND
P1[2]
43
44
GND
P1[1]
45
46
GND
P1[0]
47
48
GND
+5V, 2A max
49
50
GND
See Table 10 on page 43Table 10 and Table 11 on
page 55 for peripheral pin assignments.

RTD Embedded Technologies, Inc. | www.rtd.com 15 DMx820 User’s Manual
3.3.3 BUS CONNECTORS
PC/104-Express Bus Connectors (DM9820HR Only)
The PCIe connector is the connection to the system CPU. The position and pin assignments are compliant with the PCI/104-Express
Specification. (See PC/104 Specifications on page 80)
This board is a “Universal” board, and can connect to either a Type 1 or Type 2 PCIe/104 connector.
PC/104-Plus PCI Connector
The PC/104-Plus connector carries the signals of the PC/104-Plus PCI bus. Refer to PC/104-PlusTM Specification for the pinout of this
connector. The DM9820HR connects to the power and ground pins only, and does not use any of the signals. The DM7820HR uses this
connector for communication with the CPU.
PCI Configuration Options (DM7820HR Only)
To install the DM7820HR into the stack, the PCI Slot Number must be configured correctly. This is done by the PCI Slot Selector located at
SW1.
There are four possible PCI Slot Numbers (0 –3). Each PCI device (PC/104-Plus or PCI-104) must a use a different slot number. The slot
number is related to the position of the board in the stack. Slot 0 represents the PCI device closest to the CPU. Slot 3 represents the PCI
devices farthest away from the CPU.
NOTE: In a PC/104-Plus or PCI-104 system, all PCI devices should be located
on one side of the CPU board (above or below the add-on cards). The
CPU should not be located between two PCI devices.
Switch SW1 –PCI Slot Selector
When the PC/104-Plus Specification was first introduced, it only allowed for three PCI add-on cards to be bus masters. Version 2.0 of the
PC/104-Plus specification was released in November 2003. This version of the specification (which the DM7820HR is designed for) adds
support for all 4 PCI slots to be bus masters.
There are two methods for compatibility with CPUs designed for the older PC/104-Plus Specification. One method is to use slot positions 4-7
instead of the usual 0-3. The second is to short solder jumper B1.
The PCI Slot Number can be configured as follows:
Switch Position
PCI Slot Number
Compatibility
Master
0
Slot 0 (closest to CPU)
4
yes
1
Slot 1
4
yes
2
Slot 2
4
yes
3
Slot 3
4
yes
4
Slot 0 (closest to CPU)
3
yes
5
Slot 1
3
yes
6
Slot 2
3
If JP2
7
Slot 3
3
If JP2
Jumper JP2 –Bus Master Control
Install JP2 to enable bus mastering when in Slot 2 or Slot 3 in three bus master mode.

RTD Embedded Technologies, Inc. | www.rtd.com 16 DMx820 User’s Manual
Solder Blob B1 –Force Three Master
The DM7820HR offers a configuration solder blob at location B1. If this solder blob is open (the default), the board supports bus mastering in
all 4 PCI slots when SW1 is in position 0-3. If it is closed, the board will work in a 3 bus master configuration. If B1 is closed, SW1 positions 0-
3 will be identical to positions 4-7.
NOTE: The DM7820HR comes with solder blob B1 open by default. This
should be compatible with most PC/104-Plus CPUs. There is no need
to change this blob unless you are having compatibility problems with
your specific CPU.
PC/104 ISA Connectors (DM7820HR Only)
The PC/104 connectors carry the signals of the PC/104-Plus ISA bus. Refer to PC/104-Plus Specification Revision 1.0 for the pinout of this
connector. This is a pass-through connector. The DM7820HR connects to the power and ground pins only, and does not use any of the
signals.

RTD Embedded Technologies, Inc. | www.rtd.com 17 DMx820 User’s Manual
Steps for Installing
5. Always work at an ESD protected workstation, and wear a grounded wrist-strap.
6. Turn off power to the PC/104 system or stack.
7. Select and install stand-offs to properly position the module on the stack.
8. Remove the module from its anti-static bag.
9. Check that pins of the bus connector are properly positioned.
10. Check the stacking order; make sure all of the busses used by the peripheral cards are connected to the cpuModule.
11. Hold the module by its edges and orient it so the bus connector pins line up with the matching connector on the stack.
12. Gently and evenly press the module onto the PC/104 stack.
13. If any boards are to be stacked above this module, install them.
14. Attach any necessary cables to the PC/104 stack.
15. Re-connect the power cord and apply power to the stack.
16. Boot the system and verify that all of the hardware is working properly.
Figure 4: Example 104™Stack

RTD Embedded Technologies, Inc. | www.rtd.com 18 DMx820 User’s Manual
4IDAN Connections
Module Handling Precautions
To prevent damage due to Electrostatic Discharge (ESD), keep your module in its antistatic bag until you are ready to install it into your system.
When removing it from the bag, hold the module by the aluminum enclosure, and do not touch the components or connectors. Handle the
module in an antistatic environment, and use a grounded workbench for testing and handling of your hardware.
62D - Physical Characteristics
•Weight: Approximately 0.21 Kg (0.46 lbs.)
•Dimensions: 151.972 mm L x 129.978 mm W x 33.934 mm H (5.983 in L x 5.117 in W x 1.339 in H)
Figure 5: IDAN Dimensions
5.117”
1.339”
5.983”
62 pin High Density “D”: female
Module Part #: Adam Tech HDT62SD
Mating Part #: Adam Tech HDT62PD

RTD Embedded Technologies, Inc. | www.rtd.com 19 DMx820 User’s Manual
62D - Connectors
Table 6: IDAN “-62D” CN10 and CN11 Pin Assignments
IDAN P2 Pin
Signal
CN10
Pin
IDAN P3 Pin
Signal
CN11
Pin
Row 1
Row 2
Row 3
Row 1
Row 2
Row 3
1
P2.7
1
1
P2.15
1
22
STROBE 2
2
22
STROBE 1
2
43
P2.6
3
43
P2.14
3
2
GND
4
2
GND
4
23
P2.5
5
23
P2.13
5
44
GND
6
44
GND
6
3
P2.4
7
3
P2.12
7
24
GND
8
24
GND
8
45
P2.3
9
45
P2.11
9
4
GND
10
4
GND
10
25
P2.2
11
25
P2.10
11
46
GND
12
46
GND
12
5
P2.1
13
5
P2.9
13
26
GND
14
26
GND
14
47
P2.0
15
47
P2.8
15
6
GND
16
6
GND
16
27
P0.15
17
27
P1.15
17
48
GND
18
48
GND
18
7
P0.14
19
7
P1.14
19
28
GND
20
28
GND
20
49
P0.13
21
49
P1.13
21
8
GND
22
8
GND
22
29
P0.12
23
29
P1.12
23
50
GND
24
50
GND
24
9
P0.11
25
9
P1.11
25
30
GND
26
30
GND
26
51
P0.10
27
51
P1.10
27
10
GND
28
10
GND
28
31
P0.9
29
31
P1.9
29
52
GND
30
52
GND
30
11
P0.8
31
11
P1.8
31
32
GND
32
32
GND
32
53
P0.7
33
53
P1.7
33
12
GND
34
12
GND
34
33
P0.6
35
33
P1.6
35
54
GND
36
54
GND
36
13
P0.5
37
13
P1.5
37
34
GND
38
34
GND
38
55
P0.4
39
55
P1.4
39
14
GND
40
14
GND
40
35
P0.3
41
35
P1.3
41
56
GND
42
56
GND
42
15
P0.2
43
15
P1.2
43
36
GND
44
36
GND
44
57
P0.1
45
57
P1.1
45
16
GND
46
16
GND
46
37
P0.0
47
37
P1.0
47
58
GND
48
58
GND
48
17
5 VOLTS
49
17
5 VOLTS
49
38
GND
50
38
GND
50
* Pins 51 to 62 of the IDAN connector are not connected.

RTD Embedded Technologies, Inc. | www.rtd.com 20 DMx820 User’s Manual
68S - Physical Characteristics
•Weight: Approximately 0.21 Kg (0.46 lbs.)
•Dimensions: 151.972 mm L x 129.978 mm W x 16.993 mm H (5.983 in L x 5.117 in W x 0.669 in H)
Figure 6: IDAN Dimensions
5.117”
1.339”
5.983”
68 pin Female
Module Part #: Amphenol 5390378-7
Mating Part #: Amphenol 786090-7
Front
Back