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LMX9820ASM Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LMX9820ASM
Description  Bluetooth Serial Port Module
PDF  44 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LMX9820ASM Datasheet(HTML) 3 Page - National Semiconductor (TI)

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Revision 1.0
3
www.national.com
Table of Contents
1.0
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1
APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2.0
Functional Block Diagram . . . . . . . . . . . . . . . . . . . . . . . 1
3.0
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.1
DIGITAL HARDWARE . . . . . . . . . . . . . . . . . . . . . . 2
3.2
FIRMWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.3
DIGITAL SMART RADIO . . . . . . . . . . . . . . . . . . . . 2
3.4
PHYSICAL DIMENSIONS . . . . . . . . . . . . . . . . . . . 2
4.0
Connection Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.0
Pad Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.0
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1
GENERAL SPECIFICATIONS . . . . . . . . . . . . . . . . 8
6.2
DC CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . 9
6.3
RF PERFORMANCE CHARACTERISTICS . . . . 10
6.4
PERFORMANCE DATA (TYPICAL) . . . . . . . . . . 12
7.0
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.1
BASEBAND AND LINK MANAGEMENT
PROCESSORS 14
7.1.1
Bluetooth Lower Link Controller . . . . . . . . . . . . 14
7.1.2
Bluetooth Upper Layer Stack . . . . . . . . . . . . . . 14
7.1.3
Profile Support . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.1.4
Application with Command Interface . . . . . . . . 14
7.2
MEMORY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.3
CONTROL AND TRANSPORT PORT . . . . . . . . . 15
7.4
AUXILIARY PORTS . . . . . . . . . . . . . . . . . . . . . . . 15
7.4.1
Reset_5100 and Reset_b# . . . . . . . . . . . . . . . 15
7.4.2
Operating Environment Pads (Env0 and Env1) 15
7.4.3
Interface Select Inputs (ISEL1, ISEL2) . . . . . . 15
7.4.4
Module and LInk Status Outputs . . . . . . . . . . . 15
7.5
AUDIO PORT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.0
Digital Smart Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.1
FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . 17
8.2
RECEIVER FRONT END . . . . . . . . . . . . . . . . . . . 17
8.2.1
Poly-Phase Bandpass Filter . . . . . . . . . . . . . . . 17
8.2.2
Hard Limiter and RSSI . . . . . . . . . . . . . . . . . . . 17
8.3
RECEIVER BACK END . . . . . . . . . . . . . . . . . . . . 17
8.3.1
Frequency Discriminator . . . . . . . . . . . . . . . . . 17
8.3.2
Post-Detection Filter and Equalizer . . . . . . . . . 17
8.4
AUTOTUNING CIRCUITRY . . . . . . . . . . . . . . . . . 17
8.5
SYNTHESIZER . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.5.1
Phase-Frequency Detector . . . . . . . . . . . . . . . 17
8.6
TRANSMITTER CIRCUITRY . . . . . . . . . . . . . . . . 18
8.6.1
IQ-DA Converters and TX Mixers . . . . . . . . . . 18
8.7
CRYSTAL REQUIREMENTS . . . . . . . . . . . . . . . 18
8.7.1
Crystal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8.7.2
TCXO (Temperature Compensated Crystal Oscil-
lator) 21
8.7.3
ESR (Equivalent Series Resistance) . . . . . . . . 22
9.0
System Power-Up Sequence . . . . . . . . . . . . . . . . . . . 23
10.0
Integrated Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10.1
FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10.1.1 Operation Modes . . . . . . . . . . . . . . . . . . . . . . 24
10.1.2 Default Connections . . . . . . . . . . . . . . . . . . . . 24
10.1.3 Event Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10.1.4 Default Link Policy . . . . . . . . . . . . . . . . . . . . . 24
10.1.5 Audio Support . . . . . . . . . . . . . . . . . . . . . . . . . 24
11.0
Power Reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
11.1
LOW POWER MODES . . . . . . . . . . . . . . . . . . . . 26
11.2
UART TRANSPORT LAYER CONTROL . . . . . . 26
11.2.1 Hardware Wake-Up Functionality . . . . . . . . . . 26
11.2.2 Disabling the UART Transport Layer . . . . . . . 26
11.2.3 LMX9820A Enabling the UART Interface . . . . 26
11.2.4 Enabling the UART Transport Layer from Host 26
12.0
Command Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
12.1
FRAMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
12.1.1 Start and End Delimiters . . . . . . . . . . . . . . . . . 27
12.1.2 Packet Type ID . . . . . . . . . . . . . . . . . . . . . . . . 27
12.1.3 Opcode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
12.1.4 Data Length . . . . . . . . . . . . . . . . . . . . . . . . . . 27
12.1.5 Checksum . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
12.2
COMMAND SET OVERVIEW . . . . . . . . . . . . . . 28
13.0
Usage Scenarios . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
13.1
SCENARIO 1: POINT-TO-POINT
CONNECTION 32
13.2
SCENARIO 2: AUTOMATIC POINT-TO-POINT
CONNECTION 33
13.3
SCENARIO 3: POINT-TO-MULTIPOINT
CONNECTION 34
14.0
Application Information . . . . . . . . . . . . . . . . . . . . . . . 35
14.1
MATCHING NETWORK . . . . . . . . . . . . . . . . . . . 35
14.2
FILTERED POWER SUPPLY . . . . . . . . . . . . . . . 35
14.3
HOST INTERFACE . . . . . . . . . . . . . . . . . . . . . . 35
14.4
CLOCK INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . 35
14.5
SCHEMATIC AND LAYOUT EXAMPLES . . . . . 35
15.0
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
16.0
Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 41
17.0
Datasheet Revision History . . . . . . . . . . . . . . . . . . . . 42



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