Z89391

PRELIMINARY PRODUCT SPECIFICATION 1 Z89321/371/391 16-BIT DIGITAL SIGNAL PROCESSORS FEATURES Device Z89321 Z89371 Z89391 Note: *External s 1 DSP ROM (KW) 4 OTP (KW) 4 DSP RAM Lines 512 512 512 MIPS (Max) 24 16 24 Device Z89321 Z89371 Z89391 40-Pin DIP X X 44-Pin PLCC X X 44-Pin QFP X X 84-Pin PLCC 64* X Note: *General-Purpose 0°C to +70°C Standard Temperature Range -40°C to +85°C Extended Temperature Range 4.5- to 5.5-Volt Operating Range On-Board Peripherals s s Dual 8/16-Bit CODEC Interface Capable of up to 10 Mbps m-Law Compression Option (Decompression is Performed in Software) 16-Bit I/O Bus (Tri-Stated) Three I/O Address Pins (Latched Outputs) Wait-State Generator Three Vectored Interrupts 13-Bit General-Purpose Timer DSP Core s s s s s s 24 MIPS @ 24 MHz Maximum, 16-Bit Fixed Point DSP s 41.7 ns Minimum Instruction Cycle Time s Six-Level Hardware Stack s Six Register Address Pointers s Optimized Instruction Set (30 Instructions) s GENERAL DESCRIPTION The Z893XX products are high-performance Digital Signal Processors (DSPs) with a modified Harvard-type architecture featuring separate program and data memory. The design has been optimized for processing power while minimizing silicon space. The single-cycle instruction execution and bus structure promotes efficient algorithm execution, while the six register pointers provide circular buffering capabilities and dual operand fetching. Three vectored interrupts are complemented by a six-level stac...