TELEGRID Technologies W2500 RF Module CCA-SA-W2500-02 User Manual CCA SA W2500 02

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Date Submitted	2009-09-11 00:00:00
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TELEGRID PROPRIETARY
Doc #: MAN-U-2500-02
USER MANUAL
Module
CCA-SA-W2500-02
(Document Number: MAN-U-2500-02)
8 September, 2009
TELEGRID Technologies, Inc.
19 Microlab Road
Livingston, New Jersey 07039
(973) 994-4440
info@telegrid.com
TELEGRID PROPRIETARY
Doc #: MAN-U-2500-02
1. Overview
This document describes the operation and usage of the CCA-SA-W2500-02 Module.
The Module is designed to operate in the 2.4 GHz ISM band and consume low power. It
performs the functions of RF transmission, motion detection, and two way
communications with the user through a push-button and an LED. Other capabilities are
also provided by the MSP430 Microcontroller and CC2500 RF Transceiver. The
following paragraphs describe the electrical connections as well as internal connections
of the Module
2. Features
The CCA-SA-W2500-02 Module contains the following major features:
•
•
•
•
•
TI Low Power MSP430 Mixed Signal Processor
TI Low Power CC2500 2.4 GHz Transceiver with chip antenna
SignalQuest SQ-SEN-200-I Motion Sensor with hardware filtering
Tactile push button switch for user feedback
Red LED for user notification
3. External Connections
3.1 Programming Port
The CCA-SA-W2500-02 Module is a programmable device controlled by an on-board
Texas Instruments (TI) Low Power MSP430 Mixed Signal Processor. Connector J1 on
the Module provides access for programming the unit and for external communications.
Table 1 describes the function of each of the six (6) pins of J1.
Table 1: Module Programming Connections
Pin Number
Direction
1 (GND)
n/a
2 (TX)
Output
3 (RX)
Input
4 (RST/SBWTDIO)
Both
5 (SBWTCK)
6 (VCC)
Input
n/a
Description
Ground
Transmit Data
Receive Data
Reset/Spi-by-wire Test Data
I/O
Spi-by-wire Test Clock
Power
TELEGRID PROPRIETARY
Doc #: MAN-U-2500-02
3.2 Power Source Connections
The Module operates from an external supply of +3VDC power. This power is provided
by a battery. Table 2 describes the power and ground connections to the Module.
Table 2: Module Power Connections
Pin Name
Direction
BC1-1 (VCC)
n/a
BC1-2 (VCC)
n/a
BC2-1 (GND)
n/a
BC2-2 (GND)
n/a
Description
Power
Power
Ground
Ground
4. Powering the Module
Refer to the MSP430 and CC2500 Specifications Documents for the recommended and
absolute ratings for supply voltages and input/output voltage levels.
IMPORTANT NOTE: Different power sources should never be connected to pin 6 of J1
and BC1-1 or BC1-2 simultaneously as these are directly connected within the Module.
5. Programming the Module
Programming the Module may be done using the Spi-by-wire interface. This is done
through pins 4 and 5 of J1 which provide direct connection to the SBWTCK and
SBWTDIO I/O pins on the MSP430 Microcontroller.
6. Transmitting/ Receiving over the air
RF transmission and reception is done using the CC2500 RF Transceiver which is
controlled by the MSP430 Microcontroller using the SPI interface on I/O pins P3.0, P3.1,
P3.2 and P3.3. The CC2500 also has two general I/O pins (GDO0 and GDO2) that may
be set or read from on I/O pins P2.6 and P2.7 of the MSP430 respectively. Further
details on using the GDO general I/O pins and necessary SPI settings and commands can
be found in the CC2500 Specification Document. Information on using the SPI can be
found in the MSP430 User Guide.
NOTE: The CC2500 oscillator input is connected to a 26 MHz crystal so the Transceiver
should be configured accordingly.
TELEGRID PROPRIETARY
Doc #: MAN-U-2500-02
7. Transmitting through the UART
The MSP430 Microcontroller contains an on-board UART which is accessible through
I/O pins P3.4 and P3.5. This interface may be used to communicate outside of the
module through a direct electrical connection made to pins 2 and 3 on J1. Pin 2 on J1 has
a direct connection to P3.4 for transmit (TX) and pin 3 has a direct connection to P3.5 for
receive (RX).
8. Using the LED
The Module’s red LED can be controlled using I/O pin P1.0 of the MSP430. This output
should be set low when the LED is to be off or not in use. In order to turn on the LED it
should be set high.
9. Using the Push-Button Switch
The Module’s tactile push button switch is connected to I/O pin P1.2 of the MSP430. In
order to sense a button press, this I/O pin must be set as an input pin with its pull-up
enabled. The logic level on this pin will is therefore high when the button is not pressed,
and becomes low when it is pressed.
10. Motion Detection
The Module’s Motion Detector is used with I/O pin P2.2 of the MSP430. This pin must
be set as an input with no pull-ups or pull-downs enabled. During the absence of motion
this input will be low, while any light motion will cause it to go high. This input is
filtered externally in order to reduce the number of motion alarms when the Module is
moved continuously.
11. Other Considerations
I/O pins P2.3 and P2.4 of the MSP430 are directly connected to ground and must be set
to input with pull-up disabled.
12. FCC Certification
Integrators Responsibility:
TELEGRID PROPRIETARY
Doc #: MAN-U-2500-02
1) The CCA-SA-W2500-02 Module complies with Part 15 of the FCC rules and
regulations. The CCA-SA-W2500-02 Module has a Limited Module Approval and
should not be changed without recertification.
2) The MPE calculations need to be checked based on the location of the unit with
reference to the user. See applicable FCC guidelines governing MPE and SAR testing.
3) To fulfill FCC Certification requirements the integrator must ensure that FCC labeling
requirements are met. This includes a clearly visible label on the outside of the end
product that states:
“This product contains FCC ID: XAYW2500
The Enclosed device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and (2) this
device must accept any interference received, including interference that may cause
undesired operation.”
4) All applicable FCC warnings need to be in the end user’s manual.
FCC Regulatory Information:
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation.
If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
a) Re-orient or relocate the receiving antenna
b) Increase the separation between the equipment and receiver
c) Connect equipment and receiver to outlets on different circuits
d) Consult the dealer or an experienced radio/TV technician for help.

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Title                           : Microsoft Word - CCA-SA-W2500-02 User Manual.doc

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