SH4 RISC Multimedia Microprocessor
IEEE Micro
A 186-Mvertices/s 161-mW floating-point vertex processor with optimized datapath and vertex caches
IEEE Transactions on Very Large Scale Integration (VLSI) Systems
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A SuperH™ embedded processor core SH-X implemented in a 130-nm CMOS process running at 400 MHz achieved 720 MIPS and 2.8 GFLOPS at a power of 250 mW under worst-case conditions. It has a dual-issue seven-stage pipeline architecture, but reaches the 1.8 MIPS/MHz of the previous five-stage processor. The on-chip memory configuration is tuned for digital consumer appliances. A new resume-standby mode enables a standby current of less than 100, μA and a 3-ms recovery time. The processor meets the requirements of a wide range of applications, and is suitable for digital appliances aimed at the consumer market, such as cellular phones, digital still/video cameras, and car navigation systems.