Texas Instruments LMX9820ASM Bluetooth Serial Port Module User Manual Integration Manual
Texas Instruments Inc. Bluetooth Serial Port Module Integration Manual
Integration Manual

LMX9820A 
BluetoothTM Serial Port Module 
Introduction    
The purpose of this manual is to explain correct way how to 
integrate module LMX9820A to the end product. It includes procedures that shall 
assist you to avoid unforeseen problems. 
This manual presents information that shows how module and OEM product, 
where module integrated, complies with regulations in certain regions. Any 
modifications, not expressly approved by the manufacture could void the authority to 
operate in these regions. 
Content 
 1. General 
2. Module design application 
3. Regulatory  Compliance. 
4. FCC Regulatory Information 
4.1 Labelling 
4.2 Antenna implementation notes. 
4.3  Other regulatory notes for OEM 
5. A separate approval. 
1.General 
 This Bluetooth Serial Port Module has to be installed and used in accordance 
with the technical description/installation instructions provided by the manufacturer. 
This Bluetooth Serial Port Module is intent to be placed on the market in all 
States, where the Bluetooth technology and the used frequency band is released. For 
detail information concerning type approval of this module (eg. Where this module is 
already pre-approved) please contact the authorized local distributor or the 
manufacture. The system may only be implemented in the configuration that was 
authorized. Note that any changes or modifications to this equipment not expressly 
approved by that manufacture could void the user’s authority to operate this 
equipment. 
2.Module design application 
 2.1 Model Number 
 LMX9820A 
2.2 Features and Specifications 
    1) Bluetooth Version 1.1 Qualified. 
    2) Temperature Range: -40C to +85C 
    3) Small form factor (10.1mm x 14mm x 1.9mm)  
    4) Implemented in CMOS technology on FR4 Substrate  
5) Operating Frequency Band: 2.402GHz to 2.480GHz 
6) Sensitivity: -80dBm typical 
7) Output Power: +4dBm maximum (measured at RFinout of LMX5452 micro 
module) 
8) Operating Temperature: –40 to 85 degree C 

9) Storage Temperature: -60 to 150 degree C 
10) Operating Voltage: VCC 2.85V ~ 3.6V 
11) Power Consumption:  
 TX burst (peak) is 50mA max 
 RX burst (peak) is 40mA max 
12) Data rate:  
 Asynchronous: 723kbp/57.6kbps 
 Synchronous: 433.9kbps/433.9kbps 
2.3 Applications area. 
  PDA, POS Terminals, Data Logging Systems, Audio Gateway applications, 
other application. 
2.4 Terminal Functions 
 Table-1 
 Table-2 

Table-3 
Table-4 
Table-5 

Table-6 
 Table-7 

2.5 Software Stack for module and customer side example 
3.  Declaration about the performed tests. 
The National Semiconductor module LMX9820A is wireless data transmission  
system. This “Bluetooth” module can be integrated into various end products. 
National Semiconductor declares that The LMX9820A complies to Part 15 of the FCC 
Rules. 
4. FCC regulatory Information. 
The Federal Communication Commission Radio Frequency Interference Statement 
includes the following paragraph:  This equipment has been tested and found to 
comply with the limits 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 radiates radio frequency energy and, if not 
installed and used in accordance with the instructions, may cause harmful 
interference to radio communication. 
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: 
-Reorient or relocate the receiving antenna. 
-Increase the separation between the equipment and receiver. 
-Connect the equipment into an outlet on a circuit different from that to which the 
receiver is connected. 
-Consult the dealer or an experienced radio/TV technician for help. 

Changes or modifications not expressly approved by the party responsible 
for compliance could void the user's authority to operate the equipment. 
4.1 Labeling. 
The FCC ID will be placed on top of the product as shown below: 
End-products into which the RF module will be installed must wear 
the auxiliary label 
("Contains FCC ID: XXXXYYYY" or "Contains Transmitter Module LMX9820A FCC 
ID ED9LMX9820ASM" 
When end-product into which RF module is integrated exceeds size of a PCMCIA 
card (approx. 8 x 10 cm) than the FCC Statement 
must be placed onto the device: 
******************************************************************* 
This 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. 
*************************************************************** 
The physical size of the label and font size of the lettering will be dependant on the 
size of the final product, but in any case will always be clearly visible to all persons 
exposed to the transmitter. 
Otherwise this statement can be placed into the users manual of the 
end-product. 

4.2 Antenna implementation notes. 
This transmitter was tested and FCC approved for antenna  with maximum gain 0 
dBi.  
Recommended external antennas are described as following. 
Manufacture SN  Gain  Frequency 
Range  Temp. 
Fractus FR05-S1-N-0-104  0dBi 2400~2500MHz -40C~85C 
WPI WPSMLANT001A 0dBi 2400~2500MHz -40C~85C 
Murata ANCW12G45SAA110TT1
0dBi 2400~2500MHz -40C~85C 
4.3 Other regulatory notes for OEM.  
 Modular transmitters save manufacturers the time and any related expenses that 
would be incurred if a new equipment authorization were needed for the same 
transmitter when it is installed in a new device. This means that it can be integrated 
into end products without further testing or approval listing. The manufacturer must 
state the National Semiconductors part number and product reference in his 
literature in order to meet the requirements of the Bluetooth and regulatory. This 
should be clearly indicated in the OEM manuals.  
The purchaser / integrator ( developer) must satisfy all relevant FCC, SAR, EMC and 
Radio regulations which apply to their final product. We believe such parties have the 
technical competence to ensure that the systems they deploy continue to comply 
with all those rules.  
Further information and guidance on this subject and other equipment authorization 
matters can be found under  
-Regarding FCC regulatory information on the FCC’s website at: 
www.fcc.gov/oet/info/database/letters/.  
5. A separate approval.   
 A separate approval of the device into which the module is incorporated is only 
required when it cannot be insured that the conditions on the module grant will be 
met. The purchaser must satisfy all relevant FCC, directives which apply to their final 
product.