Diamond Systems JUPITER-MM-SIO User manual

JUPITER-MM-SIO
DC/DC Power Supply PC/104 Module
With 2 RS-232/422/485 Serial Ports
User Manual V1.3
Copyright 2001
DIAMOND SYSTEMS CORPORATION
8430-D Central Ave.
Newark, CA 94560
Tel [phone]
Fax [phone]
techinf[email protected]
www.diamondsystems.com

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 2
TABLE OF CONTENTS
1. DESCRIPTION......................................................................................................................................3
2. BOARD DRAWING ...............................................................................................................................4
3. I/O HEADER PINOUTS.........................................................................................................................5
PC/104 BUS CONNECTORS.......................................................................................................................5
MAIN INPUT POWER –J4..........................................................................................................................6
AUXILIARY INPUT/OUTPUT POWER –J5......................................................................................................6
SHUTDOWN CONTROL –J3.......................................................................................................................6
SERIAL PORT CONNECTOR –J6.................................................................................................................7
4. SERIAL PORT CONFIGURATION........................................................................................................9
PORT AND INTERRUPT REGISTER ADDRESS SELECTION ...............................................................................9
SERIAL PROTOCOL SELECTION..................................................................................................................9
CONFIGURATION FOR RS-422 AND RS-485 MODES...................................................................................10
RS-422 /RS-485 CABLE ENDPOINT TERMINATION....................................................................................10
INTERRUPT LEVELS ................................................................................................................................10
INTERRUPT SHARING..............................................................................................................................10
INTERRUPT PULLDOWN RESISTOR ...........................................................................................................10
INTERRUPT STATUS REGISTER ................................................................................................................11
DEFAULT SETTINGS................................................................................................................................11
RS-485 TRANSMITTER CONTROL.............................................................................................................11
5. INSTALLATION ..................................................................................................................................12
6. OUTPUT VOLTAGES AND CURRENTS ............................................................................................13
7. SPECIFICATIONS...............................................................................................................................14

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 3
JUPITER-MM-SIO DC/DC Power Supply PC/104 Module With 2 Serial Ports
1. DESCRIPTION
JUPITER-MM-SIO is a PC/104-format power supply module designed for mobile as well as stationary embedded
applications. The JUPITER-MM-SIO design incorporates a high efficiency DC/DC converter circuit to provide
power with minimum losses. Power supply performance and reliability have been optimized through the use of
precision surface mount components. The Jupiter-MM-SIO series contains significant advances in mobile
embedded power supply technology:
♦♦ Surface Mount Components
To the maximum extent possible, surface mount components have been used in the design, to lower the
profile and improve ruggedness. An additional benefit to is the improved ability to use the PCB planes as
a heat sink.
♦♦ High Efficiency, High-Frequency Design
Efficiency is as high as 92 percent, lowering input power requirements as well as heat generation. The
200KHz switching circuit allows the use of smaller inductors, reducing size and weight and allowing the
board to fully fit within the PC/104 height requirements.
♦♦ Advanced Design -No Heat Sink is required
Eliminating the heatsink reduces total weight, a significant benefit for airborne applications.
♦♦ Remote On/Off Control
The supply can be turned on and off with an external contact closure through an auxiliary connector.
♦♦ Dual Multiprotocol Serial Ports
Two 16450-compatible serial ports offer RS-232, RS-422, and RS-485 protocol serial communications at
speeds up to 115.2kbaud. In many applications this can reduce the need for an additional board, further
reducing total system cost, size, and weight.
♦♦ Extended Temperature Operation
Extended temperature (-40 to +85oC) operation is standard, enabling the supplies to be used in vehicle
applications and other harsh environments.

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 4
2. BOARD DRAWING
J1 PC/104 8-bit bus header
J2 PC/104 16-bit bus header
J3 Shutdown control
J4 Main power input
J5 Power input/output connector
J6 Serial port connector
J7, J8 Serial port protocol configuration
J9 Serial port address configuration
J10, J11 Serial port interrupt level configuration
J12 Factory use only (for programming Xilinx PLD)

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 5
3. I/O HEADER PINOUTS
Jupiter-MM-SIO provides connections for input, input/output, remote on/off control, and PC/104 bus. All power
I/O connectors except the PC/104 bus connectors are located along the right side of the board. The serial port
connector is on the left side of the board.
PC/104 Bus Connectors for Power Lines
For simplicity, signal names are only shown for pins with power connections on board. All remaining pins are
not shown.
View from Top of Board
J2: PC/104 16-bit bus connector J1: PC/104 8-bit bus connector
Ground D0 C0 Ground A1 B1 Ground
D1 C1 A2 B2
D2 C2 A3 B3 +5V
D3 C3 A4 B4
D4 C4 A5 B5 -5V
D5 C5 A6 B6
D6 C6 A7 B7 -12V
D7 C7 A8 B8
D8 C8 A9 B9 +12V
D9 C9 A10 B10 Key (pin cut)
D10 C10 A11 B11
D11 C11 A12 B12
D12 C12 A13 B13
D13 C13 A14 B14
D14 C14 A15 B15
D15 C15 A16 B16
+5V D16 C16 A17 B17
D17 C17 A18 B18
Ground D18 C18 A19 B19
Ground D19 C19 Key (pin cut) A20 B20
A21 B21
A22 B22
A23 B23
A24 B24
A25 B25
A26 B26
A27 B27
A28 B28
A29 B29 +5V
A30 B30
A31 B31 Ground
Ground A32 B32 Ground

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 6
Main Input Power –J4
J4 consists of a 2-pin detachable screw terminal block. The screw terminals will accept wire sizes from 18-28
gauge. The input polarity is shown in markings on the board adjacent to the board-mounted connector.
1Positive Input
2Input Return
Auxiliary Input/Output Power –J5
J5 consists of a 7-pin detachable screw terminal block. The screw terminals will accept wire sizes from 18-28
gauge. The input polarity is shown in markings on the board adjacent to the board-mounted connector.
1Positive Input
2Input Return
3+12V Output
4+5V Output
5Ground
6-5V Output
7-12V Output
Shutdown Control –J3
Shutdown may be implemented by shorting the two pins on J3 together (or driving a logic 0 into pin 1).
1Shutdown input
2Ground
Mating Connectors for J3, J4, and J5
The part numbers for several compatible mating connectors are shown below.
Item Description Manufacturer Mfr No. Digi-Key No.
J3 board mount connector 2-pin friction lock Amp 640457-2A1926
J3 mating connector 26 AWG, Blue Amp 640622-2A19112
J3 mating connector 24 AWG, White Amp 640621-2A19091
J3 mating connector 22 AWG, Red Amp 640620-2A19070
J4 board mount connector 2 pins, 0.15”, RA Phoenix Contact 1803277 277-1206
J4 screw terminals 2 pins, 0.15” Phoenix Contact 1803578 277-1161
J5 board mount connector 7 pins, 0.15”, RA Phoenix Contact 1803329 277-1211
J5 screw terminals 7 pins, 0.15” Phoenix Contact 1803620 277-1166
Digi-Key is at www.digikey.com or [phone] (800-Digikey).

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 7
Serial Port Connector –J6
Jupiter-MM-SIO provides a 20-pin header labeled J6 on the left side of the board for the 2 serial ports.
The pinouts below show both serial ports with the same protocol for illustration purposes only. Each port can
be configured independently.
See the following page for signal definitions.
RS-232 Configuration:
J6
DCD 1 12DSR 1
RXD 1 34RTS 1
TXD 1 56CTS 1
DTR 1 78RI 1
GND 910 NC
DCD 2 11 12 DSR 2
RXD 2 13 14 RTS 2
TXD 2 15 16 CTS 2
DTR 2 17 18 RI 2
GND 19 20 NC
RS-422 Configuration:
J6
NC 12NC
TXD+ 1 34TXD-1
GND 56RXD-1
RXD+ 1 78NC
GND 910 NC
NC 11 12 NC
TXD+ 2 13 14 TXD-2
GND 15 16 RXD-2
RXD+ 2 17 18 NC
GND 19 20 NC
RS-485 Configuration:
J6
NC 12NC
TXD/RXD+ 1 34TXD/RXD-1
GND 56NC
NC 78NC
GND 910 NC
NC 11 12 NC
TXD/RXD+ 2 13 14 TXD/RXD-2
GND 15 16 NC
NC 17 18 NC
GND 19 20 NC

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 8
Serial Port Signal Definitions:
Signal Name Definition Direction
RS-232:
DCD Data Carrier Detect Input
DSR Data Set Ready Input
RXD Receive Data Input
RTS Request To Send Output
TXD Transmit Data Output
CTS Clear To Send Input
DTR Data Terminal Ready Output
RI Ring Indicator Input
RS-422:
TXD+, TXD-Differential Transmit Data Output
RXD+, RXD-Differential Receive Data Input
RS-485:
TXD/RXD+ Differential Transmit/Receive + Bi-directional
TXD/RXD-Differential Transmit/Receive -Bi-directional
Common to all protocols:
GND Ground --
NC Not Connected --

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 9
4. SERIAL PORT CONFIGURATION
Please refer to the drawing of Jupiter-MM-SIO on page 4 for locations of the configuration items mentioned here.
Port and Interrupt Register Address Selection
Each peripheral board in the computer system must have a unique I/O address or block of addresses. The
Jupiter-MM-SIO actually uses five I/O address blocks: one for each of the four serial ports and one for the
interrupt status register. Each port’s address block consists of 8 consecutive addresses, while the interrupt status
register occupies a single address.
The I/O addresses are set with jumper block J9, located at the right edge of the board. Eight different I/O address
combinations are selectable. The address shown below for each port is the base address of that port, i.e. the
lowest address of the port’s I/O address block.
J9: Serial Port Address Selection
ABCPort 1 Port 2 Interrupt Status
In InIn 3F8 2F8 220
Out In In 3E8 2E8 220
In Out In 380 388 224
Out Out In 240 248 224
In In Out 100 108 240
Out In Out 120 128 244
In Out Out 140 148 248
Out Out Out 160 168 24C
Serial Protocol Selection
Different protocol configurations are possible for each serial port. Protocol selection is made by installing jumpers
in the positions indicated below in the configuration headers J7 or J8, depending on the port.
J7: Port 1 protocol configuration
J8: Port 2 protocol configuration
Protocol 123456
RS-232 Out In Out Out In Out
RS-422 Int Out Int Out Out Out
RS-485 In Out Out In Out In

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 10
Configuration for RS-422 and RS-485 Modes
When RS-422 or RS-485 modes are selected, not all signals are used by the line drivers and receivers.
Depending on your software configuration, you may need to force some inputs true so that your software will
operate correctly. Jumper blocks J7 and J8 provide a means to force the input signals true (connect them to
ground, or logic 0) for ports 1 and 2, respectively. The signals that can be controlled in this fashion are CTS,
DCD, DSR, and RI. To force an input signal true on a port, install a jumper next to that signal’s name on the
corresponding header for that port. Jumpers should not be installed in these locations for RS-232 operation.
NOTE: The positions TX and RX are not used for this purpose. Installing jumpers in these locations has an
entirely different meaning. See Cable Endpoint Termination below.
RS-422 / RS-485 Cable Endpoint Termination
In RS-422 or RS-485 networks, termination resistors are normally installed at the endpoints of the cables to
minimize reflections on the lines. Jupiter-MM-SIO provides 120Ωresistors for this purpose. To enable resistor
termination, install jumpers in the locations TX and RX of J7 or J8 for ports 1 or 2 respectively. Termination is
only needed, and should only be used, at the cable endpoints. Installing termination resistors at additional points
in the network may cause overloading and/or failure of the line drivers.
Interrupt Levels
J10: Port 1 interrupt configuration
J11: Port 2 interrupt configuration
Each serial port requires an interrupt level as well as a base I/O address. Two jumper blocks, J10 and J11, are
provided to select the interrupt level for each port from among levels 9, 3, 4, 5, 6, 7, 10, 11, 12, and 15. Install a
jumper in the position corresponding to the desired interrupt level for each port. A second jumper is usually
required in the R position as well; see “Interrupt Pulldown Resistor” below.
Note: Interrupt levels 3 –7 and 9 are available on the standard 8-bit PC/104 bus header J1. If you are using an
8-bit bus, these are the only levels available to you. Interrupt levels 10, 11, 12, and 15 are available on the 16-bit
PC/104 bus extension header J2. If you are using a 16-bit bus, then all 10 levels are available to you.
Interrupt Sharing
On the PC/104 bus, a single interrupt level may be shared by multiple devices. A device requesting service
drives the line to a logic high level, and when the device is serviced it tristates the line rather than driving it low.
This technique avoids contention by two devices trying to drive the same line with opposing logic levels.
Jupiter-MM-SIO uses this technique for the two serial ports. To use the same interrupt level for both serial ports,
install a jumper in the same number location for both ports and install a jumper in the R location for only one
port.
Interrupt Pulldown Resistor
In order to guarantee valid logic levels on the line when the device is not requesting service, each active interrupt
level requires a 1KΩpulldown resistor. Only one such resistor should be used on each active interrupt line. Each
interrupt configuration header on Jupiter-MM-SIO has a position marked “R” for enabling the pulldown resistor.
Install a jumper in this position to connect the resistor, and remove the jumper or install it over 2 pins in the left
column in the header to disconnect the resistor. If two or more ports are sharing the same interrupt level, install
the jumper in the R position for any one of the ports and leave it off the others.

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 11
Interrupt Status Register
The interrupt status register indicates the status of each port’s interrupt request line. It operates regardless of
whether interrupt sharing is enabled (see below). If two or more ports are sharing the same interrupt level, the
status register will still indicate the correct status of each port’s interrupt request line.
Bit No. 76543210
Name XXXXXXINT2 INT1
Definitions:
XBit not used; generally reads back as a 1
INT2-1Status of interrupt request for each port:
0 = no interrupt request active for this port
1 = interrupt request active for this port
Default Settings
The default settings for Jupiter-MM-SIO are as follows:
Protocol settings:
Both ports set for RS-232 protocol (Jumpers 2 and 5 installed in locations J7 and J8)
Address/Interrupt settings:
(J9 A B C = In In Out):
Feature Address Interrupt level
Port 1 100 3
Port 2 108 3 (shared)
Interrupt Status 240
RS-485 Transmitter Control
In an RS-485 network, the same pair of wires is used for both transmit and receive signals. Although any number
of nodes can be listening simultaneously, only one can be transmitting or have its transmitter turned on in order
for valid data to be transmitted across the network. On the Jupiter-MM-SIO, an RS-485 port’s transmitter enable
signal is controlled by that port’s RTS signal. The RTS signal must be asserted (driven low) to enable the
transmitter and deasserted (driven high) to turn off the transmitter.

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 12
5. INSTALLATION
All Jupiter-MM-SIO power supplies are load tested prior to shipping. The supplies ship with all the external
connectors required to start using your supply immediately. Any connector not needed can be removed.
1. Select the serial port base addresses using J9. Refer to page 9for instructions.
2. Select the serial protocol for each serial port using J7 and J8.
3. Select the interrupt levels desired for each serial port using J10 and J11.
4. Connect a DC source to the Main power connector J4, or to the Auxiliary connector J5. The supply will
operate with input voltages from 7 to 30VDC.
CAUTION: VOLTAGES ABOVE 31V WILL BE SHUNTED TO GROUND THROUGH THE TRANSIENT
VOLTAGE SUPRESSOR (TVS). THE TVS IS RATED FOR 1,500 WATT SURGES, BUT IT MAY BE
DAMAGED BY SUSTAINED VOLTAGES ABOVE 31V.
5. Once the input voltage is in the valid range, verify that the power output indicator LEDs in the lower left
corner are illuminated. This verifies your input power connections and the supply are fully functional.
Note that only indicators corresponding to the voltages available on the supply will be lit. On the dual
output version, the –5V and –12V LEDs may be present on the board but will not be lit.
6. Power down the supply. Plug the supply into your PC/104 stack. Your system is ready to use.

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 13
6. OUTPUT VOLTAGES AND CURRENTS
Jupiter-MM-SIO provides either 4 output voltages. The outputs appear on the PC/104 bus headers J1 / J2 as well
as on the auxiliary I/O connector J5. The table below lists the maximum ratings for each output voltage.
Output Max Current Notes
+5V 10A Maximum rating achieved when
only +5V output is used. Power
drawn from additional outputs will
reduce the available power on this
line.
+12V 2A
-5V 0.1A
-12V 0.5A
All outputs on the Jupiter-MM-SIO power supply are protected against overload on the outputs. The protection for
each output circuit is slightly different:
+5V Current limited to 10A.
Above 10A the output voltage will drop to maintain maximum output of 50W.
A short circuit will shut down the entire supply.
+12V Current limited to 2A.
Above 2A the voltage will drop to 5V and output current can increase to 10A (the 5V supply limit).
Above 10A the output voltage will continue to drop.
A short circuit will shut down the entire supply.
-5V Current limited to 0.1A (100mA).
A short circuit will shut down the output due to thermal protection in the output regulator IC.
Note the four LEDs in the bottom left corner of the board. These LEDs indicate the status of the four output
voltages. During normal operation all four LEDs should be lit with equal intensity. If any LED is not lit or is only
dimly lit, a problem exists with that particular circuit.

Copyright 2001 Diamond Systems Corp. Jupiter-MM-SIO User Manual V1.3 p. 14
7. SPECIFICATIONS
Input Power
Input voltage 7-30VDC
Input ripple <100mV RMS
Transient protection 1500W transient voltage suppressor
Transient cutoff 31V
Output Power
Output voltage/current +5V 10A
+12V 2A
-5V 0.1A
-12V 0.5A
Total output power 50 Watts
Output protection +5V Current limited to 10A; short circuit shuts down supply
+12V Current limited to 2A; short circuit shuts down supply
-5V Current limited to 0.1A; thermally protected against short circuit
Output ripple <50mV RMS (+5V output, 50% load)
Load regulation ±3% (+5V, -5V, +12V lines); ±8% (-12V line)
Efficiency 80% to 92%, based on load and input voltage
Serial Ports
No. of serial ports: 2
Protocol: RS-232, RS-422, RS-485, Jumper selected
Maximum baud rate: 115kbps standard version
Parameters: 5, 6, 7, or 8 data bits; Even, odd, or no parity
Short circuit protection: All outputs protected against continuous short circuit
RS-232 mode:
Input impedance: 3KΩmin
Input voltage swing: ±30V max
Output voltage swing: ±5V min, ±7V typical
RS-422, RS-485 modes:
Differential input threshold: -0.2V min, +0.2V max
Input impedance: 12KΩmin
Input current: +1.0mA max (VIN = 12V)
-0.8mA max (VIN = -7V)
Differential output voltage: 2.0V min (RL= 50Ω)
High/low states differential
output voltage symmetry: 0.2V max
Mechanical
Size 3.55” x 3.775”
PC/104 bus J1 (64 pins) and J2 (40 pins) stackthrough connectors installed
Environmental
Operating temperature -40 to +85oC
Operating humidity 5 to 95% non-condensing