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• 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- xD7 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 xD7 16-Bit Maximum Addressable External Program Space
• 32K x 16-Bit On-Chip RAM Composed of:
  • Four Blocks of 8K xD7 16-Bit On-Chip Dual-Access Program/Data RAM
• 16K xD7 16-Bit On-Chip ROM Configured for Program Memory
• 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
  • On-Chip Programmable Phase-Locked Loop (PLL) Clock Generator With Internal Oscillator or External Clock Source ⁽¹⁾
  • One 16-Bit Timer
  • Six-Channel Direct Memory Access (DMA) Controller
  • Three Multichannel Buffered Serial Ports (McBSPs)
  • 8/16-Bit Enhanced Parallel Host-Port Interface (HPI8/16)
• Power Consumption Control With IDLE1, IDLE2, and IDLE3 Instructions With Power-Down Modes
• CLKOUT Off Control to Disable CLKOUT
• On-Chip Scan-Based Emulation Logic, IEEE Std 1149.1 ⁽²⁾ (JTAG) Boundary Scan Logic
• 144-Pin Ball Grid Array (BGA) (GGU Suffix)
• 144-Pin Low-Profile Quad Flatpack (LQFP) (PGE Suffix)
• 6.25-ns Single-Cycle Fixed-Point Instruction Execution Time (160 MIPS)
• 8.33-ns Single-Cycle Fixed-Point Instruction Execution Time (120 MIPS)
• 3.3-V I/O Supply Voltage (160 and 120 MIPS)
• 1.6-V Core Supply Voltage (160 MIPS)
• 1.5-V Core Supply Voltage (120 MIPS)

⁽¹⁾ The on-chip oscillator is not available on all 5409A devices. For applicable devices, see the TMS320VC5409A Digital Signal Processor Silicon Errata (literature number SPRZ186).
⁽²⁾ IEEE Standard 1149.1-1990 Standard-Test-Access Port and Boundary Scan Architecture.
NOTE: This data manual is designed to be used in conjunction with the TMS320C54xx99 DSP Functional Overview (literature number SPRU307).
TMS320C54x, MicroStar BGA, C54x, TMS320C5000, C5000, TMS320 are trademarks of Texas Instruments.
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