LMX9820ASMX/NOPB National Semiconductor, LMX9820ASMX/NOPB Datasheet - Page 32

• Manufacturer Part Number: LMX9820ASMX/NOPB
• Description: MODULE BLUETOOTH SERIAL PORT SMD
• Manufacturer: National Semiconductor

Specifications of LMX9820ASMX/NOPB

• Frequency: 2.4GHz
• Data Rate - Maximum: 704kbps
• Modulation Or Protocol: Bluetooth v1.1, Class 2
• Applications: PDA's, POS Terminals
• Power - Output: 1dBm
• Sensitivity: -81dBm
• Voltage - Supply: 2.85 V ~ 3.6 V
• Current - Receiving: 65mA
• Current - Transmitting: 68mA
• Data Interface: PCB, Surface Mount
• Memory Size: 256Kb Flash
• Antenna Connector: PCB, Surface Mount
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 116-LTCC
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: LMX9820ASMX; LMX9820ASMXTR

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13.0 Usage Scenarios
13.1 SCENARIO 1: POINT-TO-POINT
CONNECTION
LMX9820A acts only as slave, no further configuration is
required.
Example: Sensor with LMX9820A; hand-held device with
standard Bluetooth option.
Sensor Device
Microcontroller
only “connected” event indicated to controller
Connected
on Port L
No Bluetooth™ commands necessary
UART
Figure 21. Point-to-Point Connection
Service Response
Release SDP Link
Transparent Mode
SDP Link Request
SPP Link Request
Inquiry Response
Release Confirm
SPP Link Accept
SDP Link Accept
Inquiry Request
Service Browse
LMX9820A
Raw Data
32
The SPP conformance of the LMX9820A allows any device
using the SPP to connect to the LMX9820A.
By switching to transparent mode automatically, the con-
troller has no need for an additional protocol layer; data is
sent raw to the other Bluetooth device.
On default, a PinCode is requested to block unallowed tar-
geting.
Air Interface
The client software only
shows high level functions
Get Remote Services
Standard Device
with Bluetooth
Establish SPP Link
Search for Devices
Link Established