DMCA
25 Power Domains, 14-Core Application Processor With x512b Stacked DRAM
BibTeX
@MISC{Kikuchi_25power,
author = {Yu Kikuchi and Makoto Takahashi and Tomohisa Maeda and Masatoshi Fukuda and Yasuhiro Koshio and Hiroyuki Hara and Hideho Arakida and Hideaki Yamamoto and Yousuke Hagiwara and Tetsuya Fujita and Manabu Watanabe and Hirokazu Ezawa and Takayoshi Shimazawa and Yasuo Ohara and Takashi Miyamori and Mototsugu Hamada and Masafumi Takahashi and Yukihito Oowaki},
title = {25 Power Domains, 14-Core Application Processor With x512b Stacked DRAM},
year = {}
}
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Abstract
Abstract—In this paper we introduce a 14-core application processor for multimedia mobile applications, implemented in 40 nm, with a 222 mW H.264 full high-definition (full-HD) video engine, a 124 mW 40 M-polygons/s 3D/2D graphics engine, and a video/audio multiprocessor for various Codecs and image processing. The application processor has 25 power domains to achieve coarse-grain power gating for adjusting to the required performance of wide range of multimedia applications. The simple on-chip power switch circuits perform less than 1 s switching while reducing rush current. Furthermore, the Stacked Chip SoC (SCS) technology enables rewiring to the DRAM chip during assembly/packaging phase using a wire with 10 m minimum pitch on Re-Distribution Layer (RDL) using electroplating. The peak memory bandwidth is 10.6 GB/s with an x512b SCS-DRAM interface, and the power consumption of this interface is 3.9 mW at 2.4 GB/s workload. Index Terms—Application processor, full high-definition (full-HD) video, MICRO bump, multiple power domains, on-chip LV-PMOS switch, Re-Distribution Layer (RDL), stacked DRAM. I.
Keyphrases
14-core application processor power domain x512b stacked dram re-distribution layer full high-definition video engine x512b scs-dram interface various codecs wide range image processing multimedia mobile application simple on-chip power required performance multiple power domain coarse-grain power gating power consumption stacked chip soc gb workload micro bump on-chip lv-pmos switch index term application processor video audio multiprocessor multimedia application minimum pitch graphic engine peak memory bandwidth dram chip application processor
