ARM Cortex-A12 explained
| ARM Cortex-A12 |
| Pcode1: | Owl[1] |
| Designfirm: | ARM Holdings |
| Arch: | ARMv7-A |
| Numcores: | 1–4 |
| L1cache: | 32–64 KiB I, 32 KiB D |
| L2cache: | 256 KiB–8 MiB (configurable with L2 cache controller) |
| Predecessor: | ARM Cortex-A9 |
| Successor: | ARM Cortex-A17 |
The ARM Cortex-A12 is a 32-bit processor core licensed by ARM Holdings implementing the ARMv7-A architecture. It provides up to 4 cache-coherent cores. The Cortex-A12 is a successor to the Cortex-A9.[2]
ARM renamed A12 as a variant of Cortex-A17 since the second revision of the core in early 2014, because they were indistinguishable in performance.[3] [4]
Overview
ARM claims that the Cortex-A12 core is 40 percent more powerful than the Cortex-A9 core.[5] New features not found in the Cortex-A9 include hardware virtualization and 40-bit Large Physical Address Extensions (LPAE) addressing. It was announced as supporting big.LITTLE,[6] however shortly afterwards the ARM Cortex-A17 was announced as the upgraded version with that capability.[7]
Key features of the Cortex-A12 core are:[8]
- Out-of-order speculative issue superscalar execution pipeline giving 3.00 DMIPS/MHz/core.
- NEON SIMD instruction set extension.
- High performance VFPv4 floating point unit.
- Thumb-2 instruction set encoding reduces the size of programs with little impact on performance.
- TrustZone security extensions.
- L2 cache controller (0-8 MB).
- Multi-core processing.
- 40-bit Large Physical Address Extensions (LPAE) addressing up to 1 TB of RAM.
- Hardware virtualization support.
See also
External links
- ARM Holdings
Notes and References
- Web site: What core follows ARM's A12?. 15 January 2014.
- Web site: ARM Cortex-A12 Processor . Arm.com.
- News: ARM Cortex A17: An Evolved Cortex A12 for the Mainstream in 2015. Anand Lal Shimpi. 11 February 2014 . AnandTech. 2014-09-30.
- News: ARM Cortex-A17 / Cortex-A12 processor update. Stefan Rosinger. ARM Connected Community. 1 October 2014.
- Web site: ARM launches new Cortex-A12 processor with new Mali-T622 GPU and Mali-V500 video processing . 3 June 2013 . 26 August 2013 . https://web.archive.org/web/20130826134614/http://www.androidauthority.com/arm-launches-cortex-a12-220160/ . dead .
- http://www.arm.com/about/newsroom/arm-targets-580-million-mid-range-mobile-devices-with-new-suite-of-ip.php ARM Targets 580 Million Mid-Range Mobile Devices with New Suite of IP
- Web site: ARM Cortex A17: An Evolved Cortex A12 for the Mainstream in 2015 . Anand Lal Shimpi . 11 February 2014 . Anandtech.
- Web site: Cortex-A12 Processor Specifications . ARM.
