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Texas Instruments LMX9838 Manual

Texas Instruments LMX9838 Manual

Bluetooth serial port module
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1 Features
®
•
Complete Bluetooth
2.0 Stack Including
1
– Baseband and Link Manager
– Protocols: L2CAP, RFCOMM, SDP
– Profiles: GAP, SDAP, SPP
•
High Integration: Includes Processor, 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 921.6kbits/s
•
AAI for External PCM Codec
•
Better than -80dBm Input Sensitivity
•
FCC, IC, CE, and Japan MIC Certified
•
Bluetooth SIG QD ID: B012394
•
Compact Size: 10 mm x 17 mm x 2.0 mm
2 Applications
•
Factory Automation and Control
•
Test and Measurement
•
Telematics
•
POS Terminals
•
Medical/Telemedicine
•
Data Logging Systems
•
Audio Gateways
4 Block Diagram
Antenna
2.4 GHz
Radio
XTAL
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
Sample &
Product
Buy
Folder
LMX9838 Bluetooth Serial Port Module
Link
Manager
TM
BLUEtooth
Core
ROM
Voltage
EPROM
Regulator
Tools &
Technical
Software
Documents
SNOSAZ9F – JULY 2007 – REVISED DECEMBER 2014
3 Description
The Texas Instruments LMX9838 Bluetooth Serial
Port module is a fully integrated Bluetooth 2.0
baseband controller, 2.4 GHz radio, crystal, antenna,
LDO and discreets; combined 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 Application 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 TI's CompactRISC 16-bit processor
architecture and Digital Smart Radio technology, the
LMX9838 is optimized to handle the data and link
management processing requirements of a Bluetooth
node.
Device Information
PART NUMBER
LMX9838
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
UART
Transport
32 kHz
Compact RISC
Processor
Config
Options
Combined
CVSD
System and
Codecs
Patch RAM
Support &
Community
(1)
PACKAGE
BODY SIZE (NOM)
PLGA (70)
17.00 mm × 10.00 mm
PG6
GPIO
PG7
TXD
RXD
UART
RTS#
CTS#
POR
RESET#
32k+
LFO
32k-
OP3
OP4/PG4
OP5
SCLK
Audio
SF
Port
STD
SRD
LMX9838

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Summary of Contents for Texas Instruments LMX9838

  • Page 1 Compact Size: 10 mm x 17 mm x 2.0 mm Based on TI’s CompactRISC 16-bit processor architecture and Digital Smart Radio technology, the 2 Applications LMX9838 is optimized to handle the data and link management processing requirements of a Bluetooth • Factory Automation and Control node.

  • Page 2: Table Of Contents

    Added two parameters for operating conditions........................• Changed schematic ................................Changes from Revision C (April 2013) to Revision D Page • Changed layout of National Data Sheet to TI format ......................Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 3 Audio PCM Interface Transmit Data Output (1) Connect to GND if CTS is not use. (2) Treat As No Connect If RTS is not used. Pad required for mechanical stability. Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 4 DO NOT PLACE ANY PADS. 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70 _CORE Voltage Regulator Input/Output Voltage Regulator Input Baseband Power Supply I/O Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 5 The following conditions are true unless otherwise stated in the tables: T = –40°C to +85°C. V = 3.3 V. RF system performance specifications are ensured on Texas Instruments Flagstaff board rev 2.1 evaluation platform. UNIT Digital Voltage Regulator input -0.2...
  • Page 6 Logical 1 Output Current = 2.4 V, V _IO = 3.0 V Logical 0 Output Current = 0.4 V, V _IO = 3.0 V (1) Specified by design. Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 7 T = –40°C to +85°C--V _RF = 2.8 V unless otherwise specified. RF system performance specifications are ensured on Texas Instruments Flagstaff board rev 2.1 evaluation platform. All RF parameters are tested prior to the antenna. PARAMETER TEST CONDITIONS UNIT 2.402 GHz...
  • Page 8 T = -40°C to +85°C. V _RF = 2.8V unless otherwise specified. RF system performance specifications are ensured on Texas Instruments Flagstaff board rev 2.1 evaluation platform. All RF parameters are tested prior to the antenna. PARAMETER TEST CONDITIONS...

  • Page 9: Feature Description

    8 Detailed Description 8.1 Overview LMX9838 is a fully certified Bluetooth 2.0 module, with integrated processor, radio, antenna, LDO, crystal, and passive components to form a small form factor plug-n-play solution. The built-in Bluetooth stacks up to the application layer allows users to communicate directly with SPP commands, and develop additional SPP-based Bluetooth profiles on Host through UART interface.
  • Page 10 Compliant with IC for Canada, CE for Europe, and MIC for Japan. See Regulatory Compliance. 8.3.5 Package • Complete system interface provided in Lead Grid Array on underside for surface mount assembly Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 11 8.3.11 Memory The LMX9838 introduces 16 kB of combined system and Patch RAM memory that can be used for data and/or code upgrades of the ROM based firmware. Due to the flexible startup used for the LMX9838 operating parameters like the Bluetooth Device Address (BD_ADDR) are defined during boot time. This allows reading out the parameters of an internal EEPROM or programming them directly over UART.
  • Page 12 LMX9838. Since the LMX9838 acts as gateway between the bluetooth and the UART interface, Texas Instruments recommends to use the handshaking signals especially for transparent operation. In case two signals are used CTS needs to be pulled to GND. Refer to LMX9838 Software User’s Guide, literature number SNOA498 for detailed information on 2-wire operation.
  • Page 13 8.3.15.1 General Purpose I/Os The LMX9838 device offers 3 pins which either can be used as indication and configuration pins or can be used for General Purpose functionality. The selection is made out of settings derived out of the power up sequence.
  • Page 14 40 dB (f<1 MHz, f>3 MHz). The bandpass filter is tuned over process spread and temperature variations by the autotuner circuitry. A 5th order Butterworth filter is used. Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 15 F_REF and F_MOD, coincide. Both outputs (i.e., Up and Down) then remain high. This is equal to the zero error mode. The phase-frequency detector input frequency range operates at 12 MHz. Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 16 32.768 Oscillating Amplitude PPOSC Duty Cycle — 8.3.29 Integrated Firmware The LMX9838 device includes the full Bluetooth stack up to RFComm to support the following profiles: • GAP (Generic Access Profile) • SDAP (Service Discovery Application Profile) • SPP (Serial Port Profile) Figure 2 shows the Bluetooth protocol stack with command interpreter interface.
  • Page 17 8.4.1.1.2 Default Connections Stored If default connections were stored on a previous session, once the LMX9838 is reset, it will attempt to connect each device stored within the data RAM three times. The host will be notified about the success of the link setup via a link status event.

  • Page 18: Device Functional Modes

    8.4.2 Default Connections The LMX9838 device supports the storage of up to 3 devices within its NVS. Those connections can either be connected after reset or on demand using a specific command.
  • Page 19 – firmware disables LLC and Radio if possible 8.4.6.1 Power Modes The following LMX9838 power modes, which depend on the activity level of the UART transport layer and the radio activity are defined: The radio activity level mainly depends on application requirements and is defined by standard bluetooth operations like inquiry/page scanning or an active link.
  • Page 20 8.4.7.1 Hardware Wake-up Functionality In certain usage scenarios the host is able to switch off the transport layer of the LMX9838 in order to reduce power consumption. Afterwards both devices, host and LMX9838 are able to shut down their UART interfaces.
  • Page 21 Possible scenarios can be incoming data or incoming link indicators. If the UART is not enabled the LMX9838 assumes that the Host is sleeping and waking it up by activating RTS. To be able to react on that Wake up, the host has to monitor the CTS pin.

  • Page 22: Programming - Command Interface

    Table 20 show the actual command set and the events coming back from the device. A full documented description of the commands can be found in the LMX9838 Software User’s Guide, literature number SNOA498. Note: For standard Bluetooth operation only commands from...
  • Page 23 Get Audio Settings for existing Link Set Volume Set Volume Confirm Configure the volume Get Volume Get Volume Confirm Get current volume setting Mute Mute Confirm Mutes the microphone input Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 24 Remove Pairing Confirm Remove pairing with a remote device 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...
  • Page 25 Set GPIO Output High Set GPIO Output High Confirm Set GPIOs Output to logical High Set GPIO Output Low Set GPIO Output Low Confirm Set GPIOs Output to logical Low Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...

  • Page 26: Application And Implementation

    UART interface to a data device like a sensor. The LMX9838 just waits for an incoming link and forwards data between the data device and the bluetooth link. PG6 acts as active link indicator and is used to enable the data transfer from the sensor. A 32.768khz crystal may be is used to reduce power consumption while waiting for the incoming link.
  • Page 27 Typical Applications (continued) 330: 330: 1 k: Host LMX9838 Controller RESET# GPIO1 GPIO2 GPIO3 SCLK Audio Codec Figure 7. Example For Host Controller Based Application With Audio Support Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 28 Vcc grounded if Vcc_core using external source. (for Vcc_core using external source, refer to figure 12) Vcc_core open if using internal regulator. (for Vcc_core using internal source, refer to figures 10 and 11) Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 29 9.1.2 Detailed Design Procedure 9.1.2.1 Soldering The LMX9838 bumps are designed to melt as part of the Surface Mount Assembly (SMA) process. In order to ensure reflow of all solder bumps and maximum solder joint reliability while minimizing damage to the package, recommended reflow profiles should be used.
  • Page 30 20 – 40 seconds Ramp-Down Rate 6°C/second maximum Time 25 °C to Peak Temperature 8 minutes maximum Reflow Profiles Figure 9 9.1.3 Application Performance Plots Figure 9. Typical Reflow Profiles Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...

  • Page 31: Power Supply Recommendations

    10.1 Power Supply Schematics The different possibilities to power supply the LMX9838 depend on the IO interface logic level. Figure 10 represents an example of system functional schematic for the LMX9838 using a 3.0V to 3.3V IO interface. Figure 11 represents an example of system functional schematic for the LMX9838 using a 2.5V to 3.0V IO...
  • Page 32 MVCC can be connected to 3.0V and above in this configuration. Please see Recommended Operating Conditions. Figure 12. 1.8 V to 2.5 V Example Functional System Schematic Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...

  • Page 33: Filtered Power Supply

    10.2 Filtered Power Supply It is important to provide the LMX9838 with adequate ground planes and a filtered power supply. It is highly recommended that a 2.2 μF and a 100 nF bypass capacitor be placed as close as possible to the power supply...
  • Page 34 LMX9838 SNOSAZ9F – JULY 2007 – REVISED DECEMBER 2014 www.ti.com Power Up (continued) Figure 14. LMX9838 Power-Up Sequence Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...

  • Page 35: Regulatory Compliance

    FCC ID label on the final system must be labeled with “Contains TX FCC ID: ED9LMX9838 “or “Contains transmitter module FCC ID: ED9LMX9838”. IC label on the final system must be labeled with “Contains TX IC: 1520A-LMX9838” or “Contains transmitter module IC: 1520A-LMX9838”.

  • Page 36: Fcc Instructions

    The installer of this radio equipment must ensure that the antenna is located or pointed such that it does not emit RF field in excess of Health Canada limits for the general population; consult Safety Code 6, obtainable from Health Canada’s website www.hc-sc.gc.ca/rpb. Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 37 Note2: A certified dealer shall conduct an examination on specified radio equipment and maintain the examination records as Specified by Paragraph 2 of Article 38-25 of Japanese Radio Law. 00183 Figure 15. Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...

  • Page 38: Glossary

    This data is subject to change without notice and revision of this document. For browser-based versions of this data sheet, refer to the left-hand navigation. Submit Documentation Feedback Copyright © 2007–2014, Texas Instruments Incorporated Product Folder Links: LMX9838...
  • Page 39 Samples Drawing (4/5) LMX9838SB/NOPB ACTIVE PLGA Call TI Call TI -40 to 85 LMX9838SB FCC ID: ED9LMX9838 IC: 1520A-LMX9838 LMX9838SBX/NOPB ACTIVE PLGA 1000 Call TI Call TI -40 to 85 LMX9838SB FCC ID: ED9LMX9838 IC: 1520A-LMX9838 The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
  • Page 40 PACKAGE OPTION ADDENDUM www.ti.com 19-May-2014 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release. In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.
  • Page 41 MECHANICAL DATA NAW0070A SB70A (Rev B) www.ti.com...
  • Page 42 IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue.

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