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PDF MT2502A Data sheet ( Hoja de datos )
| Número de pieza | MT2502A | |
| Descripción | SOC Processor | |
| Fabricantes | MediaTek | |
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MT2502A SOC Processor Technical Brief
Version:
Release date:
1.0
September 8, 2014
Specifications are subject to change without notice.
© 2014 MediaTek Inc.
This document contains information that is proprietary to MediaTek Inc.
Unauthorized reproduction of this information in whole or in part is strictly prohibited.
1 page  
MT2502A
SOC Processor Technical Brief
SIM controller, real-time clock, PWM, serial
LCD controller and general-purpose
programmable I/Os.
Audio
Using a highly integrated mixed-signal audio
front-end, the MT2502A architecture provides
easy audio interfacing with direct connection to
the audio transducers. The audio interface
integrates A/D converters for voice band, as well
as high-resolution stereo D/A converters for
both audio and voice band.
MT2502A supports AMR codec to adaptively
optimize the quality of speech and audio.
Moreover, HE-AAC codec is implemented to
deliver CD-quality audio at low bit rates.
In addition, an audio amplifier is also embedded
to save the BOM cost of adopting
external amplifiers.
GSM/GPRS (2G) radio
MT2502A integrates a mixed-signal baseband
front-end in order to provide a well-organized
radio interface with flexibility for efficient
customization. The front-end contains gain and
offset calibration mechanisms and filters with
programmable coefficients for comprehensive
compatibility control on RF modules. MT2502A
achieves outstanding MODEM performance by
utilizing a highly dynamic range ADC in the RF
downlink path.
MT2502A embeds a high-performance and
completely integrated single-ended SAW-less
RF transceiver for multi-band GSM cellular
system. In this RF transceiver, a quad-band
receiving feature with high sensitivity is
supported utilizing one RF receiver and a fully
integrated channel filter. With ultra-high
dynamic range, the off-chip balun and SAW
filters on the receiving path can be removed for
BOM cost reduction. In addition, the minimum
component count is guaranteed by realizing a
highly integrated transmitter, low-spur
frequency synthesizer and a Digitally-Controlled
Crystal Oscillator (DCXO).
Bluetooth radio
MT2502A offers a highly integrated Bluetooth
radio and baseband processor. Only a minimum
of external components are required. MT2502A
provides superior sensitivity and class 1 output
power and thus ensures the quality of the
connection with a wide range of
Bluetooth devices.
MT2502A is fully compliant with Bluetooth v4.0,
including BR/EDR and BT low energy and offers
enhanced data rates of up to 3Mbps. It also
provides the coexistence protocol with
802.11 system.
MT2502A supports rich Bluetooth profiles,
enabling diversified applications that are widely
used on the handset with
excellent interoperability.
FM radio
The FM radio subsystem provides a completely
integrated FM Rx receiver supporting 65 ~
108MHz FM bands with 50kHz tuning step. In
addition to receiving FM audio broadcasting, the
digital RDS/RBDS data system is supported as
well. The integrated FM transceiver utilizes
state-of-the-art digital
demodulation/modulation techniques to achieve
excellent performance.
In order to achieve high SINAD, good sensitivity
and excellent noise suppression, the FM receiver
adopts adaptive demodulation scheme to
optimize Rx system performance in all ranges of
© 2014 MediaTek Inc.
This document contains information that is proprietary to MediaTek Inc.
Unauthorized reproduction of this information in whole or in part is strictly prohibited.
Page 5 of 53
C
5 Page 
MT2502A
SOC Processor Technical Brief
1.3 MODEM Features
Radio interface and baseband front-end
• Digital PM data path with baseband
front-end
• High dynamic range delta-sigma ADC
converts the downlink analog I and Q
signals to digital baseband.
• 10-bit D/A converter for Automatic Power
Control (APC)
• Programmable radio Rx filter with adaptive
gain control
• Dedicated Rx filter for FB acquisition
• 6-pin Baseband Parallel Interface (BPI) with
programmable driving strength
• Supports multi-band
Voice and modem CODEC
• Dial tone generation
• Voice memo
• Noise reduction
• Echo suppression
• Advanced sidetone oscillation reduction
• Digital sidetone generator with
programmable gain
• Two programmable acoustic compensation
filters
• Supports GSM/GPRS (2G) modem
• GSM quad vocoders for adaptive multirate
(AMR), enhanced full rate (EFR), full rate
(FR) and half rate (HR)
• GSM channel coding, equalization and A5/1,
A5/2 and A5/3 ciphering
• GPRS GEA1, GEA2 and GEA3 ciphering
• GPRS packet switched data with
CS1/CS2/CS3/CS4 coding schemes
• GPRS Class 12
• Supports SAIC (single antenna interference
cancellation) technology
• Supports VAMOS(Voice services over
Adaptive Multi-user channels on One Slot)
technology in R9 spec.
Voice interface and voice front-end
• Microphone input has one low-noise
amplifier with programmable gain and
Automatic Gain Control (AGC) mechanisms
• Voice power amplifier with programmable
gain
• 2nd order Sigma-Delta A/D converter for
voice uplink path
• Shares D/A converter with audio playback
path
• Supports full-duplex hands-free operation
• Compliant with GSM 03.50
© 2014 MediaTek Inc.
This document contains information that is proprietary to MediaTek Inc.
Unauthorized reproduction of this information in whole or in part is strictly prohibited.
Page 11 of 53
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11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet MT2502A.PDF ] | |
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