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| Freescale MXC300-30 3G手机方案 | |||||
作者：Freescal… 文章来源：Freescale 点击数： 更新时间：2008-1-31  |
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MXC300 Mobile eXtreme Convergence 3G Cellular Platform  Freescale’s latest 3G platform, the MXC300-30, is the first platform with a 3G single core modem in the industry. The single core processor at the heart of the MXC300-30 combines a SC140e digital signal processor (DSP) based on StarCore™ technology operating at up to 250 MHz and an ARM1136™ applications processor core operating at up to 532 MHz. The single core modem handles all the signaling protocol layers (L1, L2 and L3) for 2.5G, 2.75G and 3G standards including GSM, GPRS, EDGE Class 12 and WCDMA. The applications processing technology is integrated into the chip with a shared memory system and shared peripherals, eliminating the need for an additional external applications processor, thus helping to reduce cost. This shared memory approach enables more efficient inter-processor communication, resulting in higher performance, exceptional power management and reduced complexity. Despite their integration, there is a strict separation between the communications and applications processing. This clean separation of modem and applications processing dramatically reduces complexity and simplifies software development. It helps to reduce part count, size and system costs, while enhancing multimedia and communications processing performance. This separation also gives manufacturers comprehensive scalability and flexibility across their portfolios; making it possible to increase unctionality, decrease development time and free up critical engineering resources. MXC300-30 平台主要特性： > SC140 DSP based on StarCore technology; up to 250 MHz > ARM11 applications processor up to 532 MHz > Quad-band GSM 850/900/1800/1900 MHz > Up to 3 WDCMA bands 850/1900/2100 MHz > Universal mobile telecommunications system (UMTS) data rates (max)—DL 384 Kbps, UL 384 Kbps > HSDPA 3.6 Mbps (DL) > GSM EDGE radio access network (GERAN) data rates (max)—DL 236 Kbps, UL 118 Kbps > GPRS/EGPRS (EDGE) slot up to Class 12 (4d/4u) > Support of dynamic synchronous transfer mode (DTM) Classes 5–11 > DigRF interface support 更多的More MXC300-30特性： > AMR-NB, HR, FR, WB and EFR vocoders > Hardware with f8/f9, A5/1–4 and GEA1–4 cipher algorithms > Optimized for open operating systems, such as Linux and Symbian, without the addition of any processor or accelerator > Compressed and non-compressed mode > Secure boot > Run-time integrity checker (RTIC) > Video conferencing and MPEG-4 CIF encoder > Integrated imaging processing unit (IPU) video accelerator: Camera and display interfaces Rotation, scaling and pre/post-processing > Wireless connectivity features Integrated third-party A-GPS (network assisted) solution Integrated third-party BluetoothTM solution Integrated third-party Wireless Local Area Network (WLAN) 802.11alb/g solution Digital video broadcasting for handhelds (DVB-H) interface support MXC300-30 主要的多媒体特性： > Video playback MPEG-4/H.263 CIF 30 fps, 384 Kbps H.264 decode, CIF 30 fps, 384 Kbps WMV9 decode, QCIF 30 fps, 384 Kbps > Video capture MPEG-4 encode CIF 30 fps, 384 Kbps H.264 encode QCIF 15 fps, 128 Kbps > Video conferencing H.323/324 CIF 30 fps> Audio codecs eAAC+, AMR-NB, AMR-WB, AAC, AAC+, MP3 and MIDI > Other capabilities See what I see MXC300-30 主要优势： > Lower power Communications functions on a single core Dedicated hardware accelerators Internal memories and caches > More cost-effective Shared external memory approach Single core modem architecture High integration with fewer discrete parts > Higher performance Dedicated accelerators L1, L2 caches High speed: 250 MHz DSP, 532 MHz microcontroller unit (MCU) > Reduced development time and effort Strict separation of modem and applications provides simpler software development and integration > Modem software running entirely on the DSP > Run open OSes such as Linux OS and Symbian OS on the MCU  图1。MXC300-30 3G手机平台方框图  图2。MXC300平台中关键处理器MXC1231方框图 |
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