TMS320VC5401

定点数字信号处理器

The fixed-point, digital signal processor DSP hereafter referred to as the 5401 unless otherwise specified is based on an advanced modified Harvard architecture that has one program memory bus and three data memory buses. This processor provides an arithmetic logic unit ALU with a high degree of parallelism, application-specific hardware logic, on-chip memory, and additional on-chip peripherals. The basis of the operational flexibility and speed of this DSP is a highly specialized instruction set.

Separate program and data spaces allow simultaneous access to program instructions and data, providing the high degree of parallelism. Two read operations and one write operation can be performed in a single cycle. Instructions with parallel store and application-specific instructions can fully utilize this architecture. In addition, data can be transferred between data and program spaces. Such parallelism supports a powerful set of arithmetic, logic, and bit-manipulation operations that can be performed in a single machine cycle. In addition, the 5401 includes the control mechanisms to manage interrupts, repeated operations, and function calls.

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Advanced Multibus Architecture With Three Separate 16-Bit Data Memory Buses and One Program Memory Bus

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40-Bit Arithmetic Logic Unit ALU, Including a 40-Bit Barrel Shifter and Two Independent 40-Bit Accumulators

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17- × 17-Bit Parallel Multiplier Coupled to a 40-Bit Dedicated Adder for Non-Pipelined Single-Cycle Multiply/Accumulate MAC Operation

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Compare, Select, and Store Unit CSSU for the Add/Compare Selection of the Viterbi Operator

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Exponent Encoder to Compute an Exponent Value of a 40-Bit Accumulator Value in a Single Cycle

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Two Address Generators With Eight Auxiliary Registers and Two Auxiliary Register Arithmetic Units ARAUs

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Data Bus With a Bus-Holder Feature

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Extended Addressing Mode for 1M × 16-Bit Maximum Addressable External Program Space

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4K x 16-Bit On-Chip ROM

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8K x 16-Bit Dual-Access On-Chip RAM

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Single-Instruction-Repeat and Block-Repeat Operations for Program Code

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Block-Memory-Move Instructions for Efficient Program and Data Management

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Instructions With a 32-Bit Long Word Operand

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Instructions With Two- or Three-Operand Reads

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Arithmetic Instructions With Parallel Store and Parallel Load

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Conditional Store Instructions

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Fast Return From Interrupt

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On-Chip Peripherals

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Software-Programmable Wait-State Generator and Programmable Bank Switching

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On-Chip Phase-Locked Loop PLL Clock Generator With Internal Oscillator or External Clock Source

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Two Multichannel Buffered Serial Ports McBSPs

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Enhanced 8-Bit Parallel Host-Port Interface HPI8

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Two 16-Bit Timers

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Six-Channel Direct Memory Access DMA Controller

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Power Consumption Control With IDLE1, IDLE2, and IDLE3 Instructions With Power-Down Modes

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CLKOUT Off Control to Disable CLKOUT

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On-Chip Scan-Based Emulation Logic, IEEE Std 1149.1 JTAG Boundary Scan Logic

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20-ns Single-Cycle Fixed-Point Instruction Execution Time 50 MIPS for 3.3-V Power Supply 1.8-V Core

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144-Pin Plastic Low-Profile Quad Flatpack LQFP PGE Suffix

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144-Ball MicroStar BGA™ GGU Suffix

IEEE Standard 1149.1-1990 Standard Test-Access Port and Boundary Scan Architecture.

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