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PowerQUICC

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PowerQUICC is the name for severalPowerPC- andPower ISA-basedmicrocontrollers fromFreescale Semiconductor. They are built around one or morePowerPC cores and theCommunications Processor Module (QUICC Engine) which is a separateRISC core specialized in such tasks such asI/O, communications,ATM, security acceleration,networking andUSB. Many components areSystem-on-a-chip designs tailor-made forembedded applications.

PowerQUICC processors are used in networking, automotive, industrial, storage, printing and consumer applications. Freescale are using PowerQUICC processors as a part of theirmobileGT platform.

Freescale also manufacturesQUICC microcontrollers based on the older68k technology.

There are four distinct lines of processors, mainly based on processing power.

PowerQUICC I

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The Freescale XPC855T Service Processor of aSunFire V20z

TheMPC8xx family was Motorola's firstPowerPC based embedded processors, suited for network processors andsystem-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 andbranch prediction unit with speeds up to 133 MHz. TheMPC821 was introduced in 1995 together withMPC860 with a complete QUICC engine. A slimmed down version,MPC850 with reduced caches and IO ports came in 1997. The QUICCcommunication processor module (CPM) offloads networking tasks from the CPU, thus branding this family asPowerQUICC. 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 1KiB 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

PowerQUICC II

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MPC8245 in aQlogic SANbox 5200Fibre Channel switch

PowerQUICC II was introduced in 1998 and is the direct descendant ofPowerPC 603e and the core also goes under the name603e orG2. The processors still have 16/16 KiB instruction/data L1 caches, and are reaching frequencies up to 450 MHz. These communications processors are used in applications likeVoIP systems,telecom switches,cellular base stations andDSLAMs. The PowerQUICC II family of processors are phased out in favour for the more powerful PowerQUICC II Pro line. There's no plans for further development of this core.

MPC82xx – All PowerQUICC II processors share this common naming scheme.

PowerQUICC II Pro

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Introduced in 2004, based on thee300 core, an enhancedPowerPC 603e core, with 32/32 KiB instruction/data L1 caches.PowerQUICC II Pro is used asnetworking processors forrouters,switches,printers,network-attached storage,wireless access points andDSLAMs. PowerQUICC II Pro processors reaches 677 MHz, and can include a multitude of embedded technologies likeUSB,PCI,Ethernet and security devices. They also use a newer QUICC Engine network offload engine instead of the CPM used in the original PowerQUICC I and PowerQUICC II series. The memory controller provides support for DDR and DDR2 SDRAMs.

MPC83xx – All PowerQUICC II Pro processors share this common naming scheme. A trailing "E" signifies that the processors have a built in encryption module. All devices with an 834x name lacks the quicc engine, while devices with a number like 836x has one.

PowerQUICC III

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ThePowerQUICC III processors are based on a 32-bitPower ISA v.2.03 core callede500, introduced in 2003. It has a dual issue, seven-stage pipeline with double precision FPUs, 32/32 KiB data and instruction L1 caches, multiple Gigabit Ethernet, PCI and PCIe,RapidIO, DDR/DDR2 memory controllers, and security accelerators. Speeds ranges from 533 MHz up to 1.5 GHz. These processors target enterprise level networking and telecom applications, high end storage, printing and imaging. Some of the processors use the older CPM module for the handling network processing offload, some use the newer QUICC Engine (same as in PowerQUICC II Pro), and some do not have a CPM or QUICC Engine at all. Freescale's marketing department nevertheless brand all devices in the 85xx series as being "PowerQUICC III".

MPC85xx – All PowerQUICC III processors share this common naming scheme. A trailing "E" signifies that the processors have a built-in encryption module.

  • MPC8536/35/33(E) – Communications processor with e500v2 core.
  • MPC8540 – The world's firstRapidIO enabled host processor with e500v1 core. Includes dual Gigabit Ethernet controllers, ideal for routers. Speeds from 600 MHz to 1 GHz.
  • MPC8541E – Similar to 8540 with e500v1 core, but without PCI-X,RapidIO and with security engine.
  • MPC8548/47/45/43(E) – A family of integrated devices included PCI Express and RapidIO, along with a single e500v2 core. Each lower number has fewer abilities than its higher-numbered siblings.
  • MPC8544E – Similar to the 8548 with e500v2 core, but produced in a cost-saving 90 nm process and with some differences in the actual feature set.
  • MPC8555E – Similar to the 8560 with e500v1 core, but without PCI-X,RapidIO and with security engine.
  • MPC8560 – Similar to the 8540 with e500v1 core, this was the first PQ III device launched. It includes a CPM along with the e500v1 core.
  • MPC8568/68E/67/67E – Uses the QUICC Engine with e500v2 core instead of a CPM, the 8567 has a reduced set of peripheral units.
  • MPC8569E – e500v2 core frequency of 1.33 GHz, 45 nm fabrication process, enhanced QUICC engine, rich set of peripherals and low power requirements.[1]
  • MPC8572E – Uses dual e500v2 cores with speed up to 1.5 GHz. Used in high end application-aware networking equipment likefirewalls andantivirus devices (fromKaspersky Lab).

Future

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PowerQUICC will[when?] cease development in favor of the software-compatibleQorIQ platform featuring allPowerPC e500 based processors, from single core, through multi-core, up to 32 cores. Freescale will[when?] keep manufacturing PowerQUICC processors in the foreseeable future for existing customers, but they will[when?] help facilitate the transition to QorIQ.

See also

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References

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External links

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Products
Acquisitions
Spin-offs
Industrial control unit
6800 family
68000 family
Embedded system68k-variants
88000
Floating-pointcoprocessors (FPUs)
Memory management units (MMU)
PowerPC family
ARM
8-bit
16/32-bit
24-bit
32-bit
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