MIPS proAptiv is a family of microprocessor IP cores from Imagination designed to deliver the compelling top-line performance required for connected consumer electronics including smartphones, tablets, connected TVs and set-top boxes.

proAptiv CPUs are based on a wide issue, deeply out-of-order (OoO) implementation of the MIPS32 architecture, and are available in single and multi-core product versions supporting up to six cores.

The proAptiv family leverages an advanced microarchitecture, an upgraded floating point unit (FPU), and an enhanced multi-core interconnect to deliver a major leap forward in performance over the previous generation of MIPS Classic CPU IP cores, while implementing in nearly the half the size of competing cores in the same process node.

MIPS proAptiv

Features

  • 32-bit MIPS32® Release 3 Instruction Set Architecture with up to six cores
  • High-performance, 16-stage, multiissue out-of-order (OoO) pipeline
  • I/D L1 cache sizes of 32KB or 64KB each, 4-way set associative
  • Programmable Memory Management Unit (MMU)
  • MIPS DSP Module, version 2
  • Optional 2nd gen hi-performance dual-issue Floating Point Unit (FPU)
  • Advanced power management at base core and multi-core cluster levels
  • CorExtend™ UDIs, MIPS16e ASE, EJTAG/PDtrace debug

Benefits

  • Superscalar, OoO processor available in application-optimized single and multicore versions
  • Sophisticated branch prediction for performance on modern software workloads
  • Load/Store bonding for optimum data movement performance
  • EVA (Enhanced Virtual Addressing) – programmable virtual address map for optimal use of 32-bit address space
  • Industry leading benchmark and real world performance without an increase in area and power
  • Broad software and ecosystem support and mature toolchain
  • Available as synthesizable IP, for implementation in any process node, with standard cells and memories

Applications

  • Smartphone/tablet
  • Connected DTV/STB
  • Networking
  • Automotive infotainment

Baseline Specifications

Target SpecificationsTSMC 28HPM
Frequency1 GHz – 2+ GHz*
CoreMark/MHz (per core)5.1
Total CoreMark @ 1.5 GHz> 7500 per core
DMIPS/MHz (per core)3.5
Total DMIPS @ 1.5 GHz> 5250 per core

Notes: Frequencies indicated are for fully floorplanned dual core implementation, ranging from 12T SVt area-optimized in worst case silicon corner, to 12T MVt speed-optimized typical corner silicon.

Each base core configuration:

  • 32KB Data/Inst L1 caches with parity, BIST
  • New high-speed FPU
  • Fully-featured MMU, using multi-level TLB (I/D uTLBs + 128 entry VTLB + 1024 entry FTLB)
  • PDtrace™ debug

Multi-core cluster configuration:

  • Dual fully-configured proAptiv cores per above
  • Coherence Manager + integrated 1MB L2$ w/ECC
  • One hardware IO Coherence Unit (IOCU) port

Cluster level PDtrace Implementation libraries/parameters – speed optimized, based on:

  • TSMC 28HPM 12T standard cells + Synopsys memories
  • Worst case, slow-slow corner silicon (zero temp, WCZ) with 10% OCV + 25ps clock jitter margins, except where noted at typical silicon.

MIPS proAptiv Documentation