Z89323

The Z89323/373/393 DSP family of products builds on Zilog's first generation Z893XX DSP core, integrating several peripherals especially well suited for cost-effective voice, telephony, and control applications.

These DSP devices feature a modified Harvard architecture supported by one program bus and two on-chip data buses. This bus structure is supported by two address generators and six register pointers to ensure that the 20 MIPS DSP CPU is continually active.

The Z893X3 DSP family is designed to provide a complete DSP and control system on a single chip. By integrating various peripherals, such as a high-speed 4-channel, 8-bit A/D, an SPI, three timers with PWM and WDT support, the Z893X3 family provides a compact system solution and reduces overall system cost.

To support a wide variety of development needs, the Z893X3 DSP product family features the cost-effective Z89323 with 8 Kwords of on-chip ROM, and the Z89373, a 16-MIPS OTP version of the Z89323, ideal for prototypes and early production builds. For systems requiring more than 8 Kwords of program memory, the Z89393 device can address up to 64 Kwords of external program memory.

The Z893X3 DSP family is 100 percent source and objectcode compatible with the existing Z89321/371/391 devices, providing users, who can benefit from increased integration and reduced system cost, an easy migration path from one DSP product to the next.

Throughout this specification, references to the Z89323 device applies equally to the Z89373 and Z89393, unless otherwise specified.