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LMX9838
®
Bluetooth
1.0 General Description
The National Semiconductor LMX9838 Bluetooth Serial Port
module is a fully integrated Bluetooth 2.0 baseband controller,
2.4 GHz radio, crystal, antenna, LDO and discreets; com-
bined to form a complete small form factor (10 mm x 17 mm
x 2.0 mm) Bluetooth node.
All hardware and firmware is included to provide a complete
solution from antenna through the complete lower and upper
layers of the Bluetooth stack, up to the application including
the Generic Access Profile (GAP), the Service Discovery Ap-
plication Profile (SDAP), and the Serial Port Profile (SPP).
The module includes a configurable service database to fulfil
service requests for additional profiles on the host. Moreover,
the LMX9838 is qualified as a Bluetooth endproduct, ready to
be used in the end application without additional testing and
license cost.
Based on National's CompactRISC
tecture and Digital Smart Radio technology, the LMX9838 is
optimized to handle the data and link management process-
ing requirements of a Bluetooth node.
The firmware supplied in the on-chip ROM memory offers a
complete Bluetooth (v2.0) stack including profiles and com-
mand interface. This firmware features point-to-point and
point-to-multipoint link management supporting data rates up
to the theoretical maximum over RFComm of 704 kbps. The
internal memory supports up to 7 active Bluetooth data links
and one active SCO link.
3.0 Functional Block Diagram
Bluetooth
®
is a registered trademark of Bluetooth SIG, Inc. and is used under license by National Semiconductor Corporation.
CompactRISC
®
is a registered trademark of National Semiconductor Corporation.
© 2007 National Semiconductor Corporation
Serial Port Module
®
16-bit processor archi-
300279
The on-chip Patch RAM provided for lowest cost and risk, al-
lows the flexibility of firmware upgrade.
The module is lead free and RoHS (Restriction of Hazardous
Substances) compliant. For more information on those quality
standards, please visit our green compliance website at
http://www.national.com/quality/green/
2.0 Features
■
Complete Bluetooth 2.0 Stack including
— Baseband and Link Manager
— Protocols: L2CAP, RFCOMM, SDP
— Profiles: GAP, SDAP, SPP
■
High Integration: Includes Antenna, crystal, EEPROM,
LDO
■
Supporting up to 7 active Bluetooth data links and 1 active
SCO link
■
Class 2 operation
■
UART Command/Data port speed up to 921.6kbits/s
■
Advanced Audio Interface for external PCM codec
■
Better than -80dBm input sensitivity
■
FCC certified: FCC ID: ED9LMX9838
■
IC certified: IC-1520A-LMX9838
■
CE Self certified
■
Bluetooth SIG QD ID: B012394
■
Compact Size: 10mm x 17mm x 2.0mm
September 2007
30027913
www.national.com
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Related Manuals for National Semiconductor LMX9838
Summary of Contents for National Semiconductor LMX9838
- Page 1 Compact Size: 10mm x 17mm x 2.0mm 3.0 Functional Block Diagram 30027913 Bluetooth ® is a registered trademark of Bluetooth SIG, Inc. and is used under license by National Semiconductor Corporation. CompactRISC ® is a registered trademark of National Semiconductor Corporation. © 2007 National Semiconductor Corporation 300279 www.national.com...
- Page 2 — Object Push Profile (OPP) 4.0 Applications — Synchronization Profile (SYNC) • Telemedicine/Medical, Industrial and Scientific — Headset (HSP) • Personal Digital Assistants — Handsfree Profile (HFP) • POS Terminals — Basic Imaging Profile (BIP) • Data Logging Systems — Basic Printing Profile (BPP) •...
- Page 3 7.0 Connection Diagram 30027914 8.0 Pad Description TABLE 1. System Interface Signals Pad Name Pad Location Type Default Layout Description OP3: Pin checked during Startup Sequence for configuration option OP4: I OP4: Pin checked during Startup Sequence for configuration option OP4/PG4 PG4: I/ PG4: GPIO...
- Page 4 TABLE 4. Audio Interface Signals Pad Name Pad Location Type Default Layout Description SCLK Audio PCM Interface Clock Audio PCM Interface Frame Synchronization Audio PCM Interface Transmit Data Output Audio PCM Interface Receive Data Input TABLE 5. Power, Ground and No Connect Signals Pad Name Pad Location Type...
- Page 5 The following diagrams show two application examples for LMX9838. The figure also includes the connection to a PCM LMX9838 implementations. codec, in case the host controller application includes an au- dio profile.
- Page 6 • RF system performance specifications are guaranteed on Conditions) indicate conditions for which the device is intend- National Semiconductor FlagStaff board rev 2.1 ed to be functional. evaluation platform. This device is a high performance RF integrated circuit and is ESD sensitive.
- Page 7 All tests are measured at antenna port unless otherwise specified • = -40°C to +85°C • _RF = 2.8V unless otherwise specified RF system performance specifications are guaranteed on National Semiconductor Flagstaff board rev 2.1 evaluation platform. Receiver Performance Characteristics Symbol Parameter Condition...
- Page 8 Symbol Parameter Condition Unit (Note 15) Out Of Band Blocking RF = -10 dBm, (Note 16) Performance 30 MHz < F < 2 GHz, BER < 0.001 RF = -27 dBm, 2000 MHz < F < 2399 MHz, BER < 0.001 RF = -27 dBm, 2498 MHz <...
- Page 9 Transmitter Performance Characteristics Symbol Parameter Condition Unit (Note 15) Transmit Output Power 2.402 GHz −4 2.441 GHz −4 2.480 GHz −4 MOD ΔF1 Modulation Characteristics Data = 00001111 MOD ΔF2 Modulation Characteristics Data = 10101010 (Note 18) ΔF2 Modulation Characteristics /DF1 (Note 20 dB Bandwidth...
- Page 10 The on-chip profiles can be used as interfaces to additional dence between the OP pins settings and the UART speed. profiles executed on the host. The LMX9838 includes a con- The UART offers wakeup from the power save modes via the figurable service database to answer requests with the pro- multi-input wakeup module.
-
Page 11: Op3
AAI. The Advanced Audio Interface (AAI) is an advanced version In case an external codec or DSP is used the LMX9838 audio of the Synchronous Serial Interface (SSI) that provides a full- interface generates the necessary bit and frame clock driving duplex communications port to a variety of industry-standard the interface. - Page 12 It is therefore recommended to wait for the “SimplyBlue • Send a command to the LMX9838: The command will be Ready Event” message before stating using the LM9838 by ignored. sending a command or issuing a Reset or Power On cycle.
- Page 13 13.3 RECEIVER BACK-END 13.0 Digital Smart Radio The hard-limiters are followed by a two frequency discrimina- tors. The I-frequency discriminator uses the 90× phase-shift- 13.1 FUNCTIONAL DESCRIPTION ed signal from the Q-path, while the Q-discriminator uses the The integrated Digital Smart Radio utilizes a heterodyne re- 90×...
- Page 14 13.6 TRANSMITTER CIRCUITRY erating with a 32.768 kHz crystal. An external crystal clock network is required between the 32k+ clock input (pad 27) and The transmitter consists of ROM tables, two Digital to Analog the 32k- clock output (pad 28) signals.The oscillator is built in (DA) converters, two low-pass filters, IQ mixers, and a power a Pierce configuration and uses two external capacitors.
- Page 15 14.1.2 Default Connections The LMX9838 supports the storage of up to 3 devices within its NVS. Those connections can either be connected after re- set or on demand using a specific command.
- Page 16 TABLE 11. Operation Parameters Stored in LMX9838 Parameter Default Value Description BDADDR Preprogrammed by National Bluetooth device address Local Name Serial port device PinCode 0000 Bluetooth PinCode Operation Mode Automatic ON Automatic mode ON or OFF Default Connections Up to seven default devices to connect to...
- Page 17 LMX9838 allows the firmware to power down unused the transport layer is controlled by the HW Wakeup signalling. modules. This can be done from either the Host or the LMX9838. See also “LMX9838 Software User’s Guide” for detailed informa- The Low power modes have influence on: tion on timing and implementation requirements.
- Page 18 Wake up, the host has to monitor the CTS pin. Guide” included within the LMX9838 Evaluation Board. As soon as the host activates its RTS pin, the LMX9838 will first send a confirmation event and then start to transmit the 16.1.4 Data Length...
- Page 19 Table 15 through Table 25 show the actual command set and The LMX9838 has a well defined command set to: the events coming back from the device. A full documented description of the commands can be found in the “LMX9838 • Configure the device: Software User’s Guide”.
- Page 20 TABLE 19. Bluetooth Low Power Modes Command Event Description Set Default Link Policy Set Default Link Policy Confirm Defines the link policy used for any incoming or outgoing link Get Default Link Policy Get Default Link Policy Confirm Returns the stored default link policy Set Link Policy Set Link Policy Confirm Defines the modes allowed for a specific link...
-
Page 21: Reset
List Paired Devices List of Paired Devices Get list of paired devices stored in the LMX9838 data memory Set Default Link Timeout Set Default Link Timeout Confirm Store default link supervision timeout Get Default Link Timeout Get Default Link Timeout Confirm Get stored default link supervision timeout... - Page 22 Command Event Description Read NVS Read NVS Confirm Read from the NVS (EEPROM) Write NVS Write NVS Confirm Write to the NVS (EEPROM) TABLE 26. Initialization Commands Command Event Description Set Clock and Baudrate Set Clock and Baudrate Confirm Write Baseband frequency and Baudrate used Enter Bluetooth Mode Enter Bluetooth Mode Confirm Request SimplyBlue module to enter BT mode...
- Page 23 Figure 9 represents an example of system functional close as possible to the power supply pins V , MV , and schematic for the LMX9838 using a 3.0V to 3.3V IO interface. _IO. Figure 10 represents an example of system functional 17.2 FREQUENCY AND BAUDRATE SELECTION schematic for the LMX9838 using a 2.5V to 3.0V IO interface.
- Page 24 30027909 Notes: Capacitor values C1 and C2 may vary depending on design and crystal manufacturer specification. MVCC can be connected to 3.0V and above in this configuration. Please see Recommended Operating Conditions. FIGURE 10. 2.5V to 3.0V Example Functional System Schematic 30027910 Notes: Capacitor values C1 and C2 may vary depending on design and crystal manufacturer specification.
- Page 25 30027911 Notes: Capacitor values C1 and C2 may vary depending on design and crystal manufacturer specification. MVCC can be connected to 3.0V and above in this configuration. Please see Recommended Operating Conditions. FIGURE 12. 1.8V Example Functional System Schematic www.national.com...
- Page 26 18.0 Evaluation Design www.national.com...
- Page 27 19.0 Soldering required to properly solder the LMX9838 to standard PCBs. The LMX9838 bumps are designed to melt as part of the Sur- The illustration serves only as a guide and National is not li- face Mount Assembly (SMA) process. In order to ensure able if a selected profile does not work.
- Page 28 Rules. These limits are designed to provide reasonable pro- 20.0 Regulatory Compliance tection against harmful interference in a residential installa- The LMX9838 has been tested and approved to be compliant tion. This equipment generates, uses, and can radiate radio to the following regulatory standards: frequency energy.
- Page 29 21.0 Physical Dimensions inches (millimeters) unless otherwise noted NS Package Number SB70A www.national.com...
- Page 30 National Semiconductor and the National Semiconductor logo are registered trademarks of National Semiconductor Corporation. All other brand or product names may be trademarks or registered trademarks of their respective holders.