This data manual discusses features and specifications of the TMS320VC5407 and TMS320VC5404 (hereafter referred to as the 5407/5404 unless otherwise specified) digital signal processors (DSPs). The 5407 and 5404 are essentially the same device except for differences in their memory maps.
This section lists the pin assignments and describes the function of each pin. This data manual also provides a detailed description section, electrical specifications, parameter measurement information, and mechanical data about the available packaging.
NOTE: This data sheet is designed to be used in conjunction with the _TMS320C5000 DSP Family Functional Overview_ (literature number SPRU307).
The 5407/5404 are based on an advanced modified Harvard architecture that has one program memory bus and three data memory buses. These processors provide 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 these DSPs is a highly specialized instruction set.
Separate program and data spaces allow simultaneous access to program instructions and data, providing a 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 all be performed in a single machine cycle. These DSPs also include the control mechanisms to manage interrupts, repeated operations, and function calls.
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 8M × 16-Bit Maximum Addressable External Program Space
On-Chip ROM
128K × 16-Bit (5407) Configured for Program Memory
64K × 16-Bit (5404) Configured for Program Memory
On-Chip RAM
40K × 16-Bit (5407) Composed of Five Blocks of 8K × 16-Bit On-Chip Dual-Access Program/Data RAM
16K x 16-Bit (5404) Composed of Two Blocks of 8K × 16-Bit On-Chip Dual-Access Program/Data RAM
Enhanced External Parallel Interface (XIO2)
Single-Instruction-Repeat and Block-Repeat Operations for Program Code
Block-Memory-Move Instructions for Better 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
