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參數(shù)資料
| 型號： | AD6423 |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網絡 |
| 英文描述： | DIODE ZENER 5.6V 500MW |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP64 |
| 封裝： | LOW PROFILE, PLASTIC, TQFP-64 |
| 文件頁數(shù)： | 1/8頁 |
| 文件大?。?/td> | 66K |
| 代理商： | AD6423 |
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
AD20msp415
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1997
GSM/DCS1800/PCS1900
Baseband Processing Chipset
SYST E M ARCHIT E CT URE
VOICEBAND/
BASEBAND
CODEC
AD6421
GSM
PROCESSOR
AD6422
RADIO
SIM
DATA
TERMINAL
ADAPTER
KEYPAD
2K 8
EEPROM
DISPLAY
128K 8
RAM
256K 16
ROM
AD20msp415
FEATURES
Complete Baseband Processing Chipset Performs:
Speech Coding/Decoding (GSM 06.XX)
Channel Coding/Decoding (GSM 05.03)
Equalization with 16-State Viterbi, Soft Decision
All ADC and DAC Interface Functions
Includes All Radio, Auxiliary and Voice Interfaces
Support for GSM Data Services
Embedded 16-Bit Microcontroller
Embedded 16-Bit DSP
Integrated SIM and Keyboard Interface
Interface to AD6430 GSM RF Chipset
Interface to EFR Coprocessor
J TAG Boundary Scan
Layer 1 Software Provided with Chipset
Software Compatible with AD20msp410
Full Phase 2 Protocol Stack Software Available
Full Reference Design Available for
Baseband Section and Radio Section
Ultralow Power Design
2.7 V to 3.3 V Operating Voltage
Intelligent Power Management Features
XXX mW Power Dissipation in Talk Mode
XX mW Power Dissipation in Standby Mode
Two TQFP Devices, Occupying Less than 7.5 cm
2
APPLICATIONS
GSM/DCS1800/PCS1900 Mobile Radios
GE NE RAL DE SCRIPT ION
T he Analog Devices GSM Baseband Processing Chipset provides
a competitive solution for GSM based Mobile Radio Systems.
It is designed to be fully integrated, easy to use, and compat-
ible with a wide range of product solutions. Examples are
GSM900, DCS1800, PCS1900 handsets and PCMCIA data
cards. T he AD20msp415 is the higher integrated successor of
the AD20msp410 chipset, which passed European GSM T ype
Approval in June, 1996.
T he chipset consists of two highly integrated, sub-micron, low
power CMOS components that perform the entire baseband
signal processing of the GSM handset. T he system architecture
is designed to be easily integrated into current designs and form
the basis for next generation designs.
T he chipset uses an operating supply voltage of 2.7 V to 3.3 V
which, coupled with the extensive power management features,
significantly reduces the drain on battery power and extends the
handsets talk time and standby time.
CHIPSE T COMPONE NT S
GSM Processor (GSMP)
T he AD6422 combines application specific hardware, an em-
bedded 16-bit DSP and an embedded 16-bit microcontroller
(Hitachi H8/300H). It performs channel coding and decoding
and executes the protocol stack and user software. T he DSP
implements full rate speech transcoding according to GSM
specifications, including Discontinuous T ransmission (DT X )
and Comfort Noise Insertion (CNI). A high performance soft-
decision Viterbi equalizer is also implemented in software em-
bedded in the DSP. T he embedded microcontroller executes
the Layer 1, 2, 3 and user MMI software. T he required Layer 1
software is supplied with the chipset. T o ensure minimum power
consumption, the GSMP has been designed to control all the
power-down functions of the other components in the handset.
Voiceband/Baseband Converter (VBC)
T he AD6421 performs the voiceband and baseband analog-to-
digital and digital-to-analog conversions, interfacing the digital
sections of the chipset to the microphone, loudspeaker and radio
section. In addition, the VBC contains all the auxiliary convert-
ers for burst-ramping, AFC, AGC, battery and temperature
monitoring. T he chipset interfaces directly with the radio and
supplies all the synthesizer and timing control signals required
to support two synthesizers and a variety of radio architectures
including the AD6450 GSM RF-Chipset.
Software
T he required Layer 1 software is supplied with the chipset. In
addition, an object code license is available for Layers 2 and 3 of
the protocol stack.
相關PDF資料 |
PDF描述 |
|---|---|
| AD6421AST | GSM/DCS1800/PCS1900 Baseband Processing Chipset |
| AD215 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series I; Body Material:Metal; Series:LJT; No. of Contacts:39; Connector Shell Size:21; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight RoHS Compliant: No |
| AD215AY | Circular Connector; No. of Contacts:41; Series:LJTPQ00R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:21; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle |
| AD215BY | Circular Connector; No. of Contacts:41; Series:LJTPQ00R; Body Material:Aluminum; Connecting Termination:Crimp; Connector Shell Size:21; Circular Contact Gender:Socket; Circular Shell Style:Wall Mount Receptacle |
| AD22001 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series I; Body Material:Metal; Series:LJT; No. of Contacts:4; Connector Shell Size:21; Connecting Termination:Crimp; Circular Shell Style:Wall Mount Receptacle; Body Style:Straight RoHS Compliant: No |
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