MultiConnect™ OCG
Break-Out Board
Developer’s Guide
Copyright and Technical Support
MultiConnect OCG Break-Out Board Developer’s Guide
Models: MTOCG-BOB
S000518A, Version A
Copyright
This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-Tech
Systems, Inc. All rights reserved.
Copyright © 2011, by Multi-Tech Systems, Inc.
Multi-Tech Systems, Inc. makes no representations or warranties with respect to the contents hereof and specifically disclaims
any implied warranties of merchantability or fitness for any particular purpose. Furthermore, Multi-Tech Systems, Inc. reserves
the right to revise this publication and to make changes from time to time in the content hereof without obligation of MultiTech Systems, Inc. to notify any person or organization of such revisions or changes. Check Multi-Tech’s web site for current
versions of our product documentation.
Revisions
Revision
A
Date
11/04/11
Description
Initial release
Trademarks and Logos
MultiConnect is a trademark of Multi-Tech Systems, Inc. The Multi-Tech logo is a registered trademark of Multi-Tech Systems,
Inc. Other trademarks and trade names mentioned in this publication belong to their respective owners.
Contacting Multi-Tech
Knowledge Base
The Knowledge Base provides immediate access to support information and resolutions for all Multi-Tech products. Visit
http://www.multitech.com/kb.go.
Developer Resources
To login to developer resources, visit http://www.multitech.com/coder.go.
Support Portal
To create an account and submit a support case directly to our technical support team, visit: https://support.multitech.com
Technical Support
Business Hours: M-F, 9am to 5pm CT
Country
Europe, Middle East, Africa:
U.S., Canada, all others:
By Email
support@multitech.co.uk
support@multitech.com
By Phone
+(44) 118 959 7774
(800) 972-2439 or (763) 717-5863
World Headquarters
Multi-Tech Systems, Inc.
2205 Woodale Drive
Mounds View, Minnesota 55112
Phone: 763-785-3500 or 800-328-9717
Fax: 763-785-9874
Warranty
To read the warranty statement for your product, please visit:
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http://www.multitech.com/warranty.go
Multi-Tech Systems, Inc. MultiConnect OCG Break-Out Board Developer’s Guide
MultiConnect OCG Break-Out Board
The MultiConnect OCG Break-out Board (BOB) is designed to be used with MultiConnect Open
Communications Gateways and the Multi-Tech Cellular Development Platform. It provides a quick and
easy way to simulate your application environment, exercise common analog and digital inputs, and
quickly complete general purpose connections using the GPIO cable and quick-connects.
Features
●
GPIO cable and GPIO connectors simplify testing needs
●
Four analog potentiometers simulate sensor inputs
●
Eight physical switches simulate digital signal inputs
●
Additional jumpers enable additional power and ground options
●
Desktop mounted
Developer Kit Contents
The MultiConnect OCG Break-Out Board ships with the following:
●
MTOCG-BOB Break-out Board
●
GPIO Cable
●
Power transformer with region specific blades (NAM, GB/IE, EU)
Design Notes
The BOB is a pass through board with the option of driving signals on the board.
●
Includes headers for plugging in SPI or I2C devices
●
Onboard supply has quick connect terminals and is protected from shorts and over current
conditions by a 500 mA resettable polyfuse.
●
Allowable input supply is 7VDC to 32VDC
●
Quick connect terminals can handle 26 AGW to 18AGW wire sizes
Connections
36-pin GPIO Input
Power
Serial Input
GPIO Output
I2C
Molex plug
2.5mm miniature screw
RS-232, DE-9 female
34 individual quick-connectors
4-pin header (in addition to quick-connectors)
SPI
Two 6-pin headers (in addition to quick-connectors)
Multi-Tech Systems, Inc. MultiConnect OCG Break-Out Board Developer’s Guide
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MultiConnect OCG Break-Out Board
Operating Requirements:
Operating Temperatures
Storage Environment
Humidity
-30° C to +85° C
-40° to +85° C
20% to 90% non-condensing
External Input Section
The onboard circuitry associated with the external inputs lets the user apply a voltage level to each
external input. A jumper between the switches and the BOB power supply lets the user disconnect the
switches from the BOB power supply. When this jumper is removed, 3VDC-30VDC external voltage can
be applied to the DIP switches, through the EXT_IN_PWR pin of the header.
A second jumper lets users isolate the external input ground from the BOB ground. The switches are
SPST. The BOB is designed so that when the switches are in the OFF (down) position the external input
pins are not driven by the BOB.
Header pin where
external voltage
can be applied
Analog Input Section
The onboard circuitry associated with analog inputs lets the user apply an adjustable voltage between 0
and 3.3VDC to each of the analog inputs. Two switches on the board can be used to connect or
disconnect the onboard circuitry from the analog input lines. A jumper lets the user isolate the analog
ground from the BOB ground. The voltage sources are 10 k potentiometers connected between the BOB
power supply and BOB ground. The analog inputs are connected to the potentiometer wiper pin,
through the disconnect switches.
Enable <
> Disable
External Output section
The external output section is a direct connection between the 36 pin CDP/OCG connector and the quick
connect pin. There is no other circuitry on the BOB in this section. BOB power and ground pins are
available on quick connect terminals and can be used to power pull up resistors on the external outputs
if needed.
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Multi-Tech Systems, Inc. MultiConnect OCG Break-Out Board Developer’s Guide
MultiConnect OCG Break-Out Board
Serial Debug port D9 Female connector
This connector is wired as a RS-232 DCE interface using only pins 2, 3, and 5. A standard serial cable can
be used to connect to a PC (not a null-modem cable).
D9 Pin
2
3
5
Signal
EXT_DB_TX (output from OGC/CDP unit)
EXT_DB_RX (input to OGC/CDP unit)
Digital Ground
I2C Bus header
The I2C bus header is an additional access point to the I2C bus. It has power and ground pins as well as
I2C Clock and Data lines. This allows a user to plug in an external I2C device, such as a development board
from an I2C device manufacturer.
SPI Bus headers
The two SPI bus headers are additional access points to the SPI bus. They have power and ground pins as
well as the shared MISO, MOSI, and Clock lines. One header has CS5 routed to it and the other header
has CS6 routed to it. This allows a user to plug in an external SPI device, such as a development board
from an SPI device manufacturer.
Developer Notes
●
The MT100EOCG/MTSMC-CDP-UDK has GPIO11 and GPIO12 functions for pins 7/8 in the 36 pin
connector instead of EXT_IN_6 and EXT_IN_7.
●
The MT100EOCG/MTSMC-CDP-UDK has pin 35 assigned as GPS-TX. This pin is not brought out to a
terminal block pin on the BOB card.
Multi-Tech Systems, Inc. MultiConnect OCG Break-Out Board Developer’s Guide
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MultiConnect OCG Break-Out Board
I/O Connector Pin Out
MTCDP
I/O Pin
Quick
Connect Pin
1
3
5
7
9
11
13
15
1
3
5
7
9
11
13
15
External Input 0
External Input 2
External Input 4
External Input 6
Ground – External Inputs
Analog Input 0
Analog Input 2
Ground – External Outputs
17
16
External Output 0
6
Function
Function
External Input 1
External Input 3
External Input 5
External Input 7
Ground – Analog Inputs
Analog Input 1
Analog Input 3
Ground – External
Outputs
External Output 1
Quick
MTCDP
Connect Pin I/O Pin
2
4
6
8
10
12
14
-
2
4
6
8
10
12
14
16
17
18
Multi-Tech Systems, Inc. MultiConnect OCG Break-Out Board Developer’s Guide
MultiConnect OCG Break-Out Board
MTCDP
I/O Pin
Quick
Connect Pin
19
21
23
25
18
20
22
24
External Output 2
External Output 4
External Output 6
SPI Clock Out
27
29
31
26
28
-
SPI MOSI (Master Out/Slave In)
SPI Chip Select 6 (CS6)
Debug Serial TXD
33
30
35
-
I2C Bus Clock
No Connect
-
33
Function
Breakout Board +3.3VDC
Function
Quick
MTCDP
Connect Pin I/O Pin
External Output 3
External Output 5
External Output 7
SPI MISO (Master
In/Slave Out)
SPI Chip Select 5 (CS5)
Debug Serial RXD
GPS PPS (Pulse per
Second)
I2C Bus Data
19
21
23
25
20
22
24
26
27
29
28
30
32
31
34
Ground – Digital
(SPI,I2C,Serial)
Breakout Board GND
32
36
34
-
Block Diagram
Multi-Tech Systems, Inc. MultiConnect OCG Break-Out Board Developer’s Guide
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MultiConnect OCG Break-Out Board
Connectors
8
Multi-Tech Systems, Inc. MultiConnect OCG Break-Out Board Developer’s Guide
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