DESCRIPTION

The device is a high-performance Digital Signal Processing IC particularly suited to Audio applications. The device contains two 24-bit 42 MIPS DSP cores delivering a total of 84 MIPS of DSP processing power. There is also an embedded 8-bit Microcontroller to handle all control functions. All data and program memories for both DSP cores are on-chip. A variety of highly programmable and flexible peripheral blocks for both the Microcontroller and the DSPs have been integrated to form a powerful audio processing system on a single chip.

■ Dual 24-bit 42 MIPS DSP Cores

■ 8 bit Microcontroller

■ 4 receive and 5 transmit stereo channels of Serial Audio Interface

■ Synchronous Serial Interface for communication with external processor

■ FIFO based mailboxes for inter-processor communications

■ External Memory Interface to 16Kbyte SRAM or 256Kbyte DRAM

■ CORDIC co-processor

■ Programmable PLL to suit wide range of external crystal oscillation frequencies

■ SPI control interface

■ Powerful debug interfaces

■ 5632 words Program Memory for DSP1, 1024 words Program Memory for DSP0

■ 512 words X and Y Data RAM and Data ROM for each DSP

■ 512 byte Data RAM for Microcontroller

■ 1536 byte Auxiliary RAM for Microcontroller