Texas Instruments LMX9838 User Manual

LMX9838DONGLE Hardware User Guide
LMX9838DONGLE Hardware User Guide
February 2007
Revision 0.3
1.0 Scope
National Semiconductor LMX9838 Bluetooth™ serial don­gle reference design ki t is a plug and play serial a dap ter for serial cable replacement applications and more. It is able to support more profiles than just the Serial Port Profile (including audio support with external codec boards). By using the enclosed Simply Blue Commander software, it allows user to develop their own SW applications easily given the built in interpreter for HEX commands. SBSmart is a higher level application tool that provides buttons with the built in commands to easily set up or demonstrate dif­ferent profile support using the Simply Blue SPP package.
2.0 General Description
2.1 REFERENCE DESIGN KIT CONTENTS
LMX9838 Bluetooth serial adapter reference board
USB Dongle and application software stack
Null modem cabl e
Sedona Lite board (Audio CODEC Board)
110V to 240V AC to 5V DC power adapter and pigtail
CDROM with design documents and Simply Blue soft-
ware Application tools.
2.2 LMX9838 BLUETOOTH SERIAL ADAPTER REFERENCE BOARD
Figure 1. Reference Board and Sedona Lite Board
Bluetooth is a trademark of Bluetooth SIG, Inc. and is used under license by National Semiconductor.
© 2006 National Semiconductor Corporation www.national.com
3.0 Qualification
FCC certified: — FCC ID: ED9LMX9838
FCC compliance (see Section 13.0): The device com-
plies with Part 15 of FCC Rules. Operation is subject to the following two conditions:
— This device may not ca use harmful interference — This device must accept any interference received,
including interference that may cause undesired operation
IC certified: — IC: 1520A-LMX9838
Bluetooth SIG QD ID: B012394
4.0 Requirement and Setup
4.1 BASIC REQUIREMENT
LMX9838DONGLE Hardware User Guide
X86 PC with serial port.
One of the following operating system is required.
— Windows 2000 —Windows XP
4.2 APPLICATION SOFTWARE
4.2.1 Simply Blue Commander
Applicatio n com man d or ien ted t ool to ge ner ate comm ands and watch events in the Simply Blue Command interface window. Reference the Simply Blue Commander User Guide document for details.
4.2.2 SBSmart
Easy to use Windows based tool to demonstrate additional profile support of the Simply Blue functionality. Reference the SBSmart User Guide for additional details.
4.2.3 Patch Programming
LMX9838 allows for patch programming for firmware update if necessary. Reference the LMX9838 SW User Guide document for details. This can also be done with the Simply Blue Commander and SBSmart tools.
Figure 2. System Block Diagram
5.0 Functional Description
5.1 POWER SUPPLY
DC Power Jack (6V max)
Battery Holder (6V max)
5.2 MAIN SYSTEM
Reset button for manual Reset
Jumper option for Baud rate selection
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5.3 UART INTERFACE
DB9 connector for RS232 standard PC interface using On­board level shifter IC for handling LMX9838 module’s 3.3V UART interface.
5.4 ADVANCE AUDIO INTERFACE
Support Audio applications
PCM codec interface (support linear and A-law)
PCM Master or Slave operation (SW configurable)
Direct connection to Sedona Lite Board (A-law only)
LMX9838DONGLE Hardware User Guide
6.0 Design Consideration
6.1 POWER MANAGEMENT
3.3V output single LDO is used to provide power for
RS232 interface chi p and Digital porti on of the LMX983 8.
7.0 Layout Consideration
The LMX9838 reference design is split into 2 sections, one section is RS232 transceiver circuit for PC connection, another section is LMX9838 main circuit for Host proces­sor. (Fig ure 3)
7.1 PCB REQUIREMENT
2 layers PCB required
1 mm overall thickness
7.2 LAYERS CLASSIFICATION
Top layer is the components and main signals layer
Bottom layer is interface signals and ground plane
RF circuit requirement
Large ground plane with ground via’s is must for good
RF performance
8.0 AUDIO CODEC Board
Table 2 Connectors Summary
Connector Description Details
J7 Battery Connector
2mm pitch J6 DC jack Same as above J8 DP9 serial connec-
tor (male) J5 External processor
interface J4 Advance Audio
interface
Table 3 Jumper and Test Point Summary
Jumper /
Test Point
J1, J2 and J3Clock & UART set-
Description Details
ting jumper
Maximum input volt­age is 6V
See Table 5
See Table 6
See Table 7
See Table 8
Table 4 Switch and LEDs
Switch/LED Description
S1 Reset button D1 Operation Status D2 Data Traffic (TX/RX)
Sedona Lite Board c on t ai ns an audio codec a nd two phone jacks. This board can be used in conjuction with LMX9838DONGLE to realize the audio (SCO) transmis­sion and reception capabilities. (See Table 9)
9.0 Board components and Pin As­signments
A summary of t he configuration and se lection jumpers is provided in the tables that follow. Reference both the sche­matic and PCB layout (included on the CD in the kit)
Table 1 Major Components List
Device Description
National LMX9838 Serial Port Module - Refer-
U1
ence the device datasheet. National LP3985 Low-Dropout Voltage Regula-
U3
tor Maxim MAX3225 1 Mbps High Speed UART
U2
Driver
Table 5 J8 DP9 (male) Pin Assignments
Pin # Signal name Description
1 NC No connection 2 RxD Receive Data (inp ut) 3 TxD Transmit Data (output) 4 NC No connection 5 GND Ground 6 NC No connection 7 RTS Ready to send (output) 8 CTS Clear to send (input) 9 NC No connection
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Table 6 J5 External Processor Interface
Table 8 UART interface setting
Pin # Signal name Description
1 POWER_D# ON/OFF control of LMX9838 2 VCC LDO output (3.3V) 3 GND Ground 4 TXD Transmit Data (output) 5 CTS# Clear to send (input) 6 RXD Receive Data (input) 7 RTS# Ready to send (output) 8 VCC_CORE
_IN
9 RESET# Reset (input)
LMX9838DONGLE Hardware User Guide
Table 7 J4
Pin # Signal name Description
1VCC 2SCLK 3STD
4SFS
5SRD
6GND
1.8V voltage regulator input/out­put
Advance Audio Interface
LDO output (3.3V) Advanced Audio Interface Clock Advanced Audio Interface
Transmit Data Advanced Audio Interface Frame
Synchronization Advanced Audio Interface
Receive Data Ground
J2 J3 J1 UA RT baud rate Short Short Short 921600bps Short Open Short 115200bps(default) Open Short Short 9600bps Open Open Short NVS (Default 9600bps)
Table 9 J4 (Audio CODEC Board)
Pin # Signal name Description
1Vcc 2SCLK 3STD 4SFS 5SRD 6GND
Table 10 Audio C onnection
P17 For PC Microphone P15 For PC Headphone
3.3V Input PCM Clock PCM Input Data PCM Frame Synchronization PCM Output Data Ground
Figure 3. Top view of Reference board
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10.0 Bill of materials (Reference Board)
Item Name Description Vendor Part Number
C5,C6 Capacitor 22p 0603 C0G 50V MuRata GRM39C0G220J50 C1,C3,C8,
C10 C2,C4,C7 Capacitor 2u2F 0603 Y5V 10V MuRata GRM39Y5V225Z10 C9 Capacitor 100p 0603 C0G 50V MuRata GRM39C0G101J50 C11,C12 TANT CAP 1uF 16V SIZE A Any C13,C14,C15,
C16,C17 C19 Capacitor 1uF 0603 Y5V 10V MuRata GRM39Y5V105Z10 J7 Battery hol der (2mm pitc h) Any S1 TACK SWITCH TS-1135HS RAINBOW Y1 Tuning fork crystal 32.768KHz Any J6 DC POWER JACK Morning star limited DC-015 D1 Red Color LED 0603 Size Any D2 Blue Color LED 0603 Size Any J8 DB9 (male) serial connector Any J4 2mm Socket (6 poles) Any U1 Bluetooth SPP Micro Module National Semiconductor LMX9838SM U3 Low Dropout Regulator National Semiconductor LP3985IM5X-3.3 U2 High Speed RS232 Transceivers Maxim MAX3225EEAP+ R1,R2,R3 Resistor 0603 Size, 1K Any R11,R12 Resistor 0603 Size, 10K Any R6,R7,R8,R9,
R13,R14,R17 R4,R5 Resistor 0603 Size, 330R Any J3,J10 2mm header Any J1,J2 2mm header (with jumper) Any
Capacitor 100n 0603 Y5V 50V MuRata GRM39Y5V104Z50
Capacitor 1uF 1206 X7R 25V MuRata GRM42-6X7R105K25
Resistor 0603 Size, 0R Any
LMX9838DONGLE Hardware User Guide
11.0 Bill of Materials (Sedona Lite Board)
Item Name Description Vendor Part Number
C3,C4,C5,C6 Capacitor 100nF Any Ceramic cap C6 Capacitor 1uF Any Ceramic cap C12 TANT CAP 10uF, 10V Any C40 TANT CAP 47uF, 6.3V Any C11 Not mount J1 2mm socket (6 poles) Any J2 2.54mm sock et (2 x 4 poles) Any P15 Socket for speaker (mono) Morning Star MSJ-1537 P17 Socket for microphone (mono) Morning Star MSJ-1537 R10 Resistor 0402 Size, 10R Any R13,R14 Resistor 0402 Size, 1K Any R5,R22 Resistor 0402 Size, 4.7K Any
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Item Name Description Vendor Part Number
R3 Resistor 0402 Size, 10K Any R4,R8,R9 Resistor 0402 Size, 47K Any U2 Single Rail Codec OKI MSM7717-01MS-K
12.0 References
LMX9838 Bluetooth Serial Port Module data sheet
LMX9838DONGLE Hardware User Guide
LMX9838 Blu etooth Serial Port Module - Sof tware Users
Guide
SBSmart user guide
Figure 4. Sedona Board
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13.0 Appendix: FCC instructions
13.1 SAFETY INFORMATION FOR RF EXPOSURE
13.1.1 FCC Radiation Exposure Statement:
This equipment complies with FCC radiation exposure lim­its set forth for an uncontrolled environment. End users must follow the specific operating instructions for satisfying RF exposure complia nc e.
This device is intended only form OEM integrators under the following conditions:
1. The anten na must be installed su ch that 20c m is main-
tained between the antenna and users; and
2. The transmitter module may not be co-located with any
other transmitter or antenna. IMPORTANT NOTE: In the event that these conditions can
not be met (for examp le ce rtain laptop con fig urat ion s or c o­location with another transmitter), then the FCC authoriza­tion is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (includ ing th e transmitter) and obtaining a sep­arate FCC authorization.
13.1.2 End Product Labeling
This transmitter module is authorized only for use in devices where the antenna may be installed such that 20 cm may be maintained between the antenna and users. The final end product must be labeled in visible area with the following:
“Contains TX FCC ID: ED9LMX9838”
13.1.3 End Product Manual Information
LMX9838DONGLE Hardware User Guide
rect the interference by one or more of the following mea­sures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and re-
ceiver.
Connect the equipment i nto an outlet of a c ircuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV techni­cian for assistance.
Changes or modification not expressly approved by the party responsible for Compliance could void the user’s authority to operate the equipment. Connecting of periph­erals requires the use of grounded shielded signal cables.
13.2.2 FCC Compliance Information
This device complies with Part 15 of 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 user manual for end users must include the following information in a prominent location:
“IMPORTANT NOTE: To comply with FCC RF exposure compliance require-
ments, the antenna used for this transmitter must be installed to provide a s eparation distance of a t least 20 cm from all persons and mus t no t be c o-l oc ated or op erat ing in conjunction with any other ante nna or transm itte r.”
13.2 RADIO FREQUENCY INTERFERENCE STATEMENT
13.2.1 INFORMATION TO THE USER
NOTE : This equipm en t h as been tested and fou nd to com­ply with the limits for a Class B digital device 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 can radiate radio fre­quency energy and, i f Not inst a lled and used in accord ance with the instructions, may cause harmful Interference to radio communicati ons . H owe ver, th ere i s n o g uara nte e th at interference will not occur in a particular Installation. If this equipment does caus e harm ful int erferenc e to rad io or tele­vision reception, which can be determined by turning the equipment off and on, the user is encouraged to try to cor-
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LMX9838DONGLE Designer Guide
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user.
2. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to af­fect its safety or effectiveness.
BANNED SUBSTANCE COMPLIANCE
National Semiconductor certifies that the products and packing materi als meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no “Banned Substances” as defined in CSP-9-111S2.
Leadfree products are RoHS compliant.
National Semiconductor Corporation
Tel: 1-800-272-9959 Fax: 1-800-737-7018 Email: support@nsc.com
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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
National Semiconductor Europe
Fax: +49 (0) 180-530 85 86
Email: europe.support@nsc.com
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