page_title: PowerPC 400
section_title: PowerPC 405
hierarchical_section_title: PowerPC 400 / Variants / PowerPC 405
caption_attribution_description: English: IBM STB04500 a PowerPC based set-top-box processor in a "Dilog DT 550".
context_page_description: The PowerPC 400 family is a line of 32-bit embedded RISC processor cores based on the PowerPC or Power ISA instruction set architectures. The cores are designed to fit inside specialized applications ranging from system-on-a-chip microcontrollers, network appliances, application-specific integrated circuits and field-programmable gate arrays to set-top boxes, storage devices and supercomputers.
  Applied Micro Circuits Corporation bought assets concerning the 400 family cores from IBM in April 2004 for $227 million, and they now market the processors under their own name. IBM continues evolving the cores while supplying design and foundry services around the cores. Several cores are also available for licensing by OEMs from IBM and Synopsys.
context_section_description: The PowerPC 405 was released in 1998 and was designed for price or performance sensitive low-end embedded system-on-a-chip (SoC) designs. It has a five-stage pipeline, separate 16 KB instruction and data L1 caches, a CoreConnect bus, an Auxiliary Processing Unit (APU) interface for expandability and supports clock rates exceeding 400 MHz. The 405 core adheres to the current Power ISA v.2.03 using the Book III-E specification. Both AMCC and IBM are developing and marketing processors using 405 cores. IBM and Synopsys also offers a fully synthesizable core. IBM has announced plans to make the specifications of the PowerPC 405 core freely available to the academic and research community.
  PowerPC-405-based applications include digital cameras, modems, set-top boxes (IBM's STB04xxx processors), cellphones, GPS-devices, printers, fax machines, network cards, network switches, storage devices and service processors for servers. Up to two 405 cores are used in Xilinx Virtex-II Pro and Virtex-4 FPGAs. In 2004 Hifn bought IBM's PowerNP network processors that uses 405 cores.
  V-Dragon
  The Chinese company Culturecom uses a 405 core for its V-Dragon processor which powers Linux terminals and set-top-boxes. The V-Dragon processor includes the Multilingual Character Generation Engine (MCGE) that processes and generates Chinese characters directly in the CPU.
  APM801xx
  AppliedMicro has a series of system on a chip products based on PowerPC 405 core, under a new name: APM801xx. These are the most energy efficient Power Architecture products to date (Fall 2010), and supports frequencies up to 800 MHz at ~1 W, or 0.3 W idling. Made to support a wide range of applications from networking, to storage and media devices.
  POWER8 on-chip controller
  The POWER8 processor contains an embedded on-chip power and thermal management microcontroller, called on-chip controller (OCC).  Based on a PowerPC 405 processor with 512 KB of dedicated static RAM (SRAM), OCC monitors the entire chip.
caption: IBM STB04500 in a Dilog DT 550. A set top box powered by a 252 MHz PowerPC 405 based SoC.
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