參數(shù)資料
型號： AD6422AST
廠商： ANALOG DEVICES INC
元件分類： 通信及網(wǎng)絡
英文描述： surface mount silicon Zener diodes
中文描述： SPECIALTY TELECOM CIRCUIT, PQFP144
封裝： LOW PROFILE, PLASTIC, TQFP-144
文件頁數(shù)： 6/8頁
文件大小： 66K
代理商： AD6422AST
AD20msp415
–6–
REV. 0
Digital Interface from the GSMP to Accessories
T o allow proper control of external accessories like a car kit, the
AD6422 provides a 10-pin accessory interface comprised of
eight general purpose I/O channels, one chip select and one
power control signal.
Digital T est Interface
T he AD6421 and the AD6422 both support advanced test
methodologies by providing JT AG Boundary Scan. Addition-
ally, the AD6422 provides T est/Mode pins, which select differ-
ent test and operating modes.
Digital Interface from GSMP to Optional E FR-Coprocessor
T he AD6422 provides a digital interface to an external EFR
Coprocessor (DSP). T his coprocessor is required to handle the
Enhanced Full Rate speech codec in PCS1900 mobile radios.
Baseband Processing K ey Parts List
T able I lists the major hardware components necessary to com-
plete the GSM baseband processing subsystem.
DISPLAY
CONTROL
KEYPAD
EEPROM
DATA
INTERFACE
VBC
CLOCK
POWER
SUBSYSTEM
13MHz
VCTCXO
DAI
INTERFACE
GSMP
SYNTHESIZER
AND RADIO
CONTROL
DEMODULATOR
MODULATOR
IF
AMPLIFIER
RADIO
POWER
AMPLIFIER
CAR KIT
VOICEBAND
ANALOG I/O
RAMP DAC
AGC DAC
BASEBAND
ANALOG I/O
AUX ADC
SERIAL
PORTS
AFC DAC
DAI CONTROL
VBC INTERFACE
POWER
CONTROL
SYNTHESIZER
AND RADIO
CONTROL
DATA
INTERFACE
EEPROM
INTERFACE
KEYPAD
INTERFACE
BACKLIGHT
CONTROL
DISPLAY
CONTROL
DATA
ADDRESS
SIM
INTERFACE
BACKLIGHT
SRAM
FLASH
SIM CARD
TEST
INTERFACE
TEST
INTERFACE
CLKIN
ACCESSORIES
CLKOUT
MCLK
COPROCESSOR
(OPTIONAL)
COPROCESSOR
INTERFACE
Figure 5. Chipset Interfaces
T able I. List of Key Components
Description
GSMP
1
VBC
1
EFR-Coprocessor
2
FLASH
3
SRAM
EEPROM
4
Display Driver
Specification
AD6422
AD6421
AD6423
256K
×
16, 150 ns
128K
×
8, 120 ns
2K
×
8
Design Specific
NOT ES
1
T hese components comprise the AD20msp415
chipset.
2
T he EFR-Coprocessor is required only in systems
requiring support of the Enhanced Full Rate speech
codec.
3
A size of 4 Mbits is recommended to allow storage of
all GSM Layer (1, 2, 3) programs for GSM Phase 2
as well as a typical User Interface (MMI).
4
Can be omitted if parameters are stored in FLASH
memory.
相關(guān)PDF資料
PDF描述
AD6423 DIODE ZENER 5.6V 500MW
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
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD6423 制造商:AD 制造商全稱:Analog Devices 功能描述:GSM/DCS1800/PCS1900 Baseband Processing Chipset
AD6426 制造商:AD 制造商全稱:Analog Devices 功能描述:Enhanced GSM Processor
AD6426XB 制造商:AD 制造商全稱:Analog Devices 功能描述:Enhanced GSM Processor
AD6426XST 制造商:AD 制造商全稱:Analog Devices 功能描述:Enhanced GSM Processor
AD642J 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision, Low Cost Dual BiFET Op Amp
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