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부품번호 LMX5452 기능
기능 Micro-Module Integrated Bluetooth 1.2 Baseband Controller and Radio
제조업체 National Semiconductor
로고 National Semiconductor 로고


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LMX5452 데이터시트, 핀배열, 회로
February 2006
LMX5452
Micro-Module Integrated Bluetooth® 1.2 Baseband
Controller and Radio
1.0 General Description
The LMX5452 is a highly integrated Bluetooth 1.2 compliant
solution. The integrated baseband controller and 2.4 GHz
radio combine to form a complete, small form-factor (6.1 mm
x 9.1 mm x 1.2 mm) Bluetooth node.
The baseband controller has a standard Host Controller
Interface (HCI). Based on the National Semiconductor Com-
pactRISCTM 16-bit processor, the LMX5452 is optimized to
handle the audio, data, and link management processing
requirements of a Bluetooth node.
The on-chip memory, ROM, and Patch RAM provide lowest
cost and minimize design risk with the flexibility of firmware
upgrades.
The firmware supplied in the on-chip ROM supports a com-
plete Bluetooth Link Manager and HCI with communication
through a UART or USB interface. This firmware features
point-to-point and point-to-multipoint link management, sup-
porting data rates up to 723 kbps.
The radio employs an integrated antenna filter and switch to
minimize the number of external components.
The radio has a heterodyne receiver architecture with a low
intermediate frequency (IF), which enables the IF filters to be
integrated on-chip. The transmitter uses direct IQ-
modulation with Gaussian-filtered bit-stream data, a voltage-
controlled oscillator (VCO) buffer, and a power amplifier.
The LMX5452 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 Applications
Mobile Handsets
USB Dongles
Stereo Headsets
Personal Digital Assistants
Personal Computers
Automotive Telematics
3.0 Features
n Compliant with the Bluetooth 1.2 Core Specification
n -80 dBm receiver sensitivity (typical)
n Class 2 operation
n Low power consumption:
— Advanced power management features
— Clocking option 12/13 MHz with PLL bypass mode for
power reduction
n High integration:
— Implemented in 0.18 µm CMOS technology
— RF includes on-chip antenna filter and switch
— On-chip firmware with complete HCI
n Embedded ROM and Patch RAM memory
n Up to seven Asynchronous Connection Less (ACL) links
n Support for two simultaneous voice or Synchronous
Connection Oriented (SCO) links
n Accepts10-20 MHz external clock or crystal network
n Fractional-N Sigma/Delta modulator
n Operating voltage range 2.5–3.6V
n I/O voltage range 1.6–3.6V
n 60-pad micro-module BGA package (6.1 mm x 9.1 mm x
1.2 mm)
4.0 Interfaces
n Full-duplex UART supporting transfer rates up to 921.6
kbps including baud rate detection for HCI
n Full speed (12 Mbps) USB 2.0 for HCI
n ACCESS.bus and SPI/Microwire for interfacing with
external non-volatile memory
n Advanced Audio Interface (AAI) for interfacing with
external 8-kHz PCM codec
n Up to 3 GPIO port pins (OP4/PG4, PG6, PG7)
controllable by HCI commands
n JTAG based serial on-chip debug interface
n Single Rx/Tx-pad radio interface
Bluetooth® is a registered trademark of Bluetooth SIG, Inc. and is used under license by National Semiconductor Corporation.
MICROWIREis a trademark of National Semiconductor Corporation.
© 2006 National Semiconductor Corporation DS201804
www.national.com





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