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1. (WO2014199545) SEMICONDUCTOR INTEGRATED CIRCUIT, AND DATA INTERFACE SYSTEM PROVIDED WITH SAME

Pub. No.:    WO/2014/199545    International Application No.:    PCT/JP2014/001890
Publication Date: Fri Dec 19 00:59:59 CET 2014 International Filing Date: Tue Apr 01 01:59:59 CEST 2014
IPC: G06F 12/00
G06F 1/26
Applicants: SOCIONEXT INC.
株式会社ソシオネクスト
Inventors: KUBO, Hironori
久保 浩紀
MIZOBATA, Norihiko
溝端 教彦
HIRANO, Makoto
平野 誠
SUZUKI, Akihiro
鈴木 章宏
TAKEUCHI, Masahiro
武内 昌弘
Title: SEMICONDUCTOR INTEGRATED CIRCUIT, AND DATA INTERFACE SYSTEM PROVIDED WITH SAME
Abstract:
A semiconductor integrated circuit (101) which operates using voltage supplied from a first power supply IC (103), sends data to, and receives data from an external memory, and comprises: an interface circuit (105) which operates by receiving voltage supplied from a second power supply IC (112), accesses the external memory, and sends data to, and receives data from the external memory; a determination circuit (106) which determines the AC timing of the external memory, and the interface circuit on the basis of the access result of the interface circuit, and generates control information that controls the output voltage of the second power supply IC on the basis of the AC timing; and a voltage control circuit (108) which controls the output voltage of the second power supply IC in accordance with the control information.