Multimedia applications of microprocessor with embedded DRAM

The M32R/D is a 32-bit microprocessor with a large-capacity on-chip DRAM. It consists of a 32-bit RISC CPU, a 32-bit×16-bit multiply and accumulator (MAC), either 1-Mbyte or 2-Mbyte DRAM, 4-Kbyte cache memory, and a memory controller. The CPU, DRAM, and cache memory are connected via a 128-bit 66.6 MHz internal bus yielding high performance and low power dissipation. The chip is capable of coping with a with range of applications and thus provides the system designer with great flexibility. For instance, a portable multimedia system can be realized by only three chips: an M32R/D chip, an I/O ASIC chip, and programming ROM. This means that a total system solution can be achieved at a lower cost with higher performance. Personal digital assistants (PDAs) and digital still cameras are such examples