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부품번호 LMX9838 기능
기능 Bluetooth Serial Port Module
제조업체 National Semiconductor
로고 National Semiconductor 로고


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LMX9838 데이터시트, 핀배열, 회로
www.DataSheet4U.com
PRELIMINARY
July 2007
LMX9838
Bluetooth® Serial Port Module
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® 16-bit processor archi-
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.
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
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 300279
30027913
www.national.com




LMX9838 pdf, 반도체, 판매, 대치품
Pad Name
SCLK
SFS
STD
SRD
Pad Name
MVCC
VCC_CORE
VCC
VCC_IO
GND
NC
NC
Pad Location
20
21
22
23
TABLE 5. Audio Interface Signals
Type
I/O
I/O
O
I
Default Layout
Description
Audio PCM Interface Clock
Audio PCM Interface Frame Synchronization
Audio PCM Interface Transmit Data Output
Audio PCM Interface Receive Data Input
TABLE 6. Power, Ground and No Connect Signals
Pad Location
6
9
10
11
3,4,17,18,24,
29,30,31,32
1,5,33,34,35,
36,37,38,39,40
41,42,43,44,45,
46,47,48,49,50,
51,52,53,54,55,
56,57,58,59,60,
61,62,63,64,65,
66,67,68,69,70
Type
I
I/O
I
I
I
Default Layout
Description
Module internal Voltage Regulator Input
Voltage Regulator Input/Output
Voltage Regulator Input Baseband
Power Supply I/O
GND
Must be connected to ground plane
NC Place Pads for stability. See Section 21.0 Physical
Dimensions
NC DO NOT PLACE ANY PADS. See Section 21.0 Physical
Dimensions
www.national.com
4

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LMX9838 전자부품, 판매, 대치품
10.1 DC CHARACTERISTICS
Symbol
VIH
VIL
VHYS
IOH
Parameter
Logical 1 Input Voltage high
(except oscillator I/O)
Logical 0 Input Voltage low
(except oscillator I/O)
Hysteresis Loop Width (Note 12)
Logical 1 Output Current
IOL Logical 0 Output Current
Note 12: Guaranteed by design.
Digital DC Characteristics
Condition
3.0V VCC 3.6V
3.0V VCC 3.6V
VOH = 2.4V,
VCC = 3.0V
VOH = 0.4V,
VCC = 3.0V
Min
2.0
-0.2
0.1 x VCC
-10
10
Max
VCC + 0.2
0.8
Units
V
V
V
mA
mA
10.2 RF PERFORMANCE CHARACTERISTICS
In the performance characteristics tables the following applies:
• All tests performed are based on Bluetooth Test Specification revision 2.0
• All tests are measured at antenna port unless otherwise specified
• TA = -40°C to +85°C
• VDD_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
RXsense
Parameter
Receive Sensitivity
PinRF
IMP
(Note 14)
Maximum Input Level
Intermodulation Performance
RSSI
OOB
(Note 14)
RSSI Dynamic Range at LNA
Input
Out Of Band Blocking
Performance
Condition
BER < 0.001
2.402 GHz
2.441 GHz
2.480 GHz
F1= + 3 MHz,
F2= + 6 MHz,
PinRF = -64 dBm
Min
-10
-38
-72
PinRF = -10 dBm,
30 MHz < FCWI < 2 GHz,
BER < 0.001
PinRF = -27 dBm,
2000 MHz < FCWI < 2399 MHz,
BER < 0.001
PinRF = -27 dBm,
2498 MHz < FCWI < 3000 MHz,
BER < 0.001
PinRF = -10 dBm,
3000 MHz < FCWI < 12.75 GHz,
BER < 0.001
-10
-27
-27
-10
Typ
(Note 13)
-80
-80
-80
0
-36
Max
-76
-76
-76
-52
Unit
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
Note 13: Typical operating conditions are at 2.75V operating voltage and 25°C ambient temperature.
Note 14: The f0 = -64 dBm Bluetooth modulated signal, f1 = -39dbm sine wave, f2 = -39 dBm Bluetooth modulated signal, f0 = 2f1 - f2, and |f2 - f1| = n * 1MHz,
where n is 3, 4, or 5. For the typical case, n = 3.
7 www.national.com

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