The growth in integration capacity of a single chip has made system-on-a-chip possible. System-on-a-chip integration technology is extremely effective for portable, low-power, low-cost oriented systems. However, the complexities ofsystem-on-a-chip result in long, expensive design and verification cycles. One way to solve this problem is to construct the complex chip with small, preverified core blocks.We have developed many system LSIs in order to give Toshiba information system products (notebook PCs, personal communication products, hard disk drives, etc.) their distinctive features, and have designed and verified many useful core blocks through thedevelopment of these system LSIs. We are implementing changes in our LSI design flow to realize circuit-block-based design using such predesigned core blocks.
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