With constantly changing standards, upgrades, and new features to keep handset manufacturers competitive, the hardware and software continue to get more complex. Yet with Motorola's i.250-21 Innovative Convergence platform, OEMs and ODMs (original design manufacturers) may now find it much easier to design and implement a state-of-the-art 2.5G multimedia digital cell phone.
The i.250-21 platform is a mix of hardware chip sets and software that completely defines a four-band GSM/GPRS voice/data cell phone. It supports the 850-, 900-, 1800-, and 1900-MHz bands, making it possible to create a phone that's usable for voice or data anywhere in North America, Europe, and Asia.
The three-chip set is shown in the figure. The MC13777 RF IC integrates the low-noise amplifiers, mixers, baseband filters, and the transceiver VCOs. The MMM6022 HBT power amplifier covers all four bands and integrates the power coupling, power detection, low-pass filtering, and antenna switching functions.
The DSP56331 baseband processor integrates the DSR56000 DSP with an ARM7TDMI-S microcontroller. This chip offers high-quality video and imaging capabilities, and it contains secure memory.
The software includes a field-proven GSM/GPRS stack and relevant applications software, such as multimedia messaging service (MMS), caller ID, and the wireless access protocol (WAP 2.0).Motorola Semiconductor Product Sectorwww.motorola.com/semiconductors