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說明

The TMS320UC5402 fixed-point, digital signal processor (DSP) (hereafter referred to as the UC5402 unless otherwise specified) is ideal for low-power, high-performance applications. This processor offers very low power consumption and the flexibility to support various system voltage configurations. The wide range of I/O voltage enables it to operate with a single 1.8-V power supply or with dual power supplies for mixed voltage systems. This feature eliminates the need for external level-shifting and reduces power consumption in emerging sub-3V systems.

Texas Instrument (TI) DSPs do not require specific power sequencing between the core supply and the I/O supply. However, systems should be designed to ensure that neither supply is powered up for extended periods of time if the other supply is below the proper operating voltage.

特性

• Advanced Multibus Architecture With Three Separate 16-Bit Data Memory Buses and One Program Memory Bus
• 40-Bit Arithmetic Logic Unit (ALU), Including a 40-Bit Barrel Shifter and Two Independent 40-Bit Accumulators
• 17- × 17-Bit Parallel Multiplier Coupled to a 40-Bit Dedicated Adder for Non-Pipelined Single-Cycle Multiply/Accumulate (MAC) Operation
• Compare, Select, and Store Unit (CSSU) for the Add/Compare Selection of the Viterbi Operator
• Exponent Encoder to Compute an Exponent Value of a 40-Bit Accumulator Value in a Single Cycle
• Two Address Generators With Eight Auxiliary Registers and Two Auxiliary Register Arithmetic Units (ARAUs)
• Data Bus With a Bus-Holder Feature
• Extended Addressing Mode for 1M × 16-Bit Maximum Addressable External Program Space
• 4K x 16-Bit On-Chip ROM
• 16K x 16-Bit On-Chip Dual-Access RAM
• Single-Instruction-Repeat and Block-Repeat Operations for Program Code
• Block-Memory-Move Instructions for Efficient Program and Data Management
• Instructions With a 32-Bit-Long Word Operand
• Instructions With Two- or Three-Operand Reads
• Arithmetic Instructions With Parallel Store and Parallel Load
• Conditional Store Instructions
• Fast Return From Interrupt
• On-Chip Peripherals
  • Software-Programmable Wait-State Generator and Programmable Bank Switching
  • On-Chip Phase-Locked Loop (PLL) Clock Generator With Internal Oscillator or External Clock Source