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PowerQUICC is the name for several Power Architecture based microcontrollers from Freescale Semiconductor. They are built around one or more PowerPC cores and the QUICC Engine which is a separate RISC core specialized in such tasks such as I/O, communications, ATM, security acceleration, networking and USB. Many components are System-on-a-chip designs tailor made for embedded applications. PowerQUICC processors are used in networking, automotive, industrial, storage, printing and consumer applications. Freescale are using PowerQUICC processors as a part of their mobileGT platform. Freescale also manufactures QUICC microcontrollers based on the older 68k technology. There are four distinct lines of processors, mainly based on processing power. == PowerQUICC I == '' The MPC8xx family was Motorola's first PowerPC based embedded processors, suited for network processors and system-on-a-chip devices. The core is an original implementation of the PowerPC specification. It is a single issue, four stage pipelined core with MMU and branch prediction unit with speeds up to 133 MHz. The MPC821 was introduced in 1995 together with MPC860 with a complete QUICC engine. A slimmed down version, MPC850 with reduced caches and IO ports came in 1997. The QUICC communication processor module (CPM) offloads networking tasks from the CPU, thus branding this family as PowerQUICC. All processors in the family differ in on-chip features like USB, serial, PCMCIA, ATM and Ethernet controllers and different amount of L1 caches ranging from 1 KiB up to 16 KiB. MPC8xx – All PowerQUICC processors share this common naming scheme. * MPC821 – The first embedded PowerPC processor, with integrated CPM, but no FPU and came in speeds up to 50 MHz * MPC860 - The first PowerPC with fully integrated QUICC engine, with speeds up to 80 MHz * MPC850 - A low-cost, stripped MPC860 with integrated USB and Ethernet. Speeds up to 50 MHz 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「PowerQUICC」の詳細全文を読む スポンサード リンク
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