The TMS320VC5420 fixed-point digital signal processor (DSP) is a dual CPU device capable of up to 200-MIPS performance. The 5420 consists of two independent 54x subsystems capable of core-to-core communications.
Each subsystem CPU is based on an advanced, modified Harvard architecture that has one program memory bus and three data memory buses. The processor also provides an arithmetic logic unit (ALU) that has a high degree of parallelism, application-specific hardware logic, on-chip memory, and additional on-chip peripherals.
• 200-MIPS Dual-Core DSP Consisting of Two Independent Subsystems
• Each Core Has an Advanced Multibus Architecture With Three Separate 16-Bit Data Memory Buses and One Program Bus
• 40-Bit Arithmetic Logic Unit (ALU) Including a 40-Bit Barrel-Shifter and Two 40-Bit Accumulators Per Core
• Each Core Has a 17- × 17-Bit Parallel Multiplier Coupled to a 40-Bit Adder for Non-Pipelined Single-Cycle Multiply/Accumulate (MAC) Operations
• Each Core Has a Compare, Select, and Store Unit (CSSU) for the Add/Compare Selection of the Viterbi Operator
• Each Core Has an Exponent Encoder to Compute an Exponent Value of a 40-Bit Accumulator Value in a Single Cycle
• Each Core Has Two Address Generators With Eight Auxiliary Registers and Two Auxiliary Register Arithmetic Units (ARAUs)
• 16-Bit Data Bus With Data Bus Holder Feature
• 256K × 16 Extended Program Address Space
• Total of 192K × 16 Dual- and Single-Access On-Chip RAM
• Single-Instruction Repeat and Block-Repeat Operations
• Instructions With 32-Bit Long Word Operands
• Instructions With 2 or 3 Operand Reads
• Fast Return From Interrupts
• Arithmetic Instructions With Parallel Store and Parallel Load
• Conditional Store Instructions
• Output Control of CLKOUT
• Output Control of TOUT
• Power Consumption Control With IDLE1, IDLE2, and IDLE3 Instructions
• Dual 1.8-V (Core) and 3.3-V (I/O) Power Supplies for Low Power, Fast Operation
