NXP公司的AeroFONE单片GSM/GPRS低成本多媒体解决方案PNX4903能以超低成本实现带彩色屏的音乐手机.这种单芯片解决方案集成了模拟和数字基带,RF收发器,功率管理以及音频电路.唯一的外接元件是功率放大器和存储器.完整的双频段GSM/GPRS调制解调器可以采用低成本的4层PCB做成,仅需要49个元件.本文介绍了PNX4903的主要性能以及多媒体手机的方框图.
AeroFONE single-chip GSM/GPRS low-cost multimedia solution
The NXP AeroFONE PNX4903 enables a music phone with color screen in the ultra-low-cost market segment. By integrating the analog and digital basebands, RF transceiver, power management, and audio circuitry in a single monolithic IC, the PNX4903 solution delivers the smallest bill of materials and PCB footprint, along with the lowest manufacturing and test costs.
The only external ICs needed are a power amplifier and memory. A complete, dual-band GSM/GPRS modem can be realized with just 49 external components on a low-cost four-layer PCB. Traditional multi-chip handset designs require three times the number of external components on a more complex PCB.
The hardware reference design is accompanied by a flexible, pre-integrated and validated software complement that reduces R&D expense and speeds time-to-market.
主要特性:
Complete GSM/GPRS solution in a single monolithic IC
GSM Phase 2+ compliant
Low power, high-performance 0.13-m CMOS process
Industry-leading ARM926-EJS MCU core
High-performance DSP core
SAIC support for increased network capacity
Integrates all the SRAM for a voice-centric phone
Completely integrated RF transceiver
Dual-band Rx and Tx (850 or 900/1800 or 1900)
Proven, industry-leading Aero II technology
Best-in-class performance
Complete power management unit (PMU) subsystem
Integrated battery-charging circuitry
Integrates all voltage regulators (LDOs and DC/DC)
Integrated audio subsystem
MP3 playback with support for SD card
40 voice polyphonic MIDI + MP3 ringtones
Microphone amplifi er with two differential inputs
Two differential audio output amplifiers
HR/FR/EFR/AMR vocoders
Alternate 40-kS/s audio mode for polyphonic ringtones
Speaker phone noise suppression and echo cancellation
Optimized, flexible system control
Integrated 26-MHz DCXO (only need XTAL)
Integrated 32-kHz RTC oscillator (only need XTAL)
Flexible modes for optimized power consumption
Comprehensive set of peripheral functions
Standard package
10 x 10 mm plastic ball grid array (PBGA)
RoHS-compliant
PNX4903方框图: