Overview
The TMS320LC548PGE-66 is a fixed-point digital signal processor (DSP) from Texas Instruments, based on an advanced modified Harvard architecture. This architecture features one program memory bus and three data memory buses, enabling high parallelism and efficient data processing. The processor includes a 40-bit Arithmetic Logic Unit (ALU), application-specific hardware logic, on-chip memory, and various on-chip peripherals. The TMS320LC548 is designed to support a wide range of digital signal processing applications with its highly specialized instruction set and robust control mechanisms for managing interrupts, repeated operations, and function calls.
Key Specifications
| Specification | Value |
|---|---|
| Frequency | 66 MHz |
| Max Operating Temperature | 100 °C |
| Max Supply Voltage | 3.6 V |
| Package Type | 144-pin Thin Quad Flatpack (TQFP) |
| Memory Space | 192K × 16-Bit (64K Words Program, 64K Words Data, and 64K Words I/O) |
| Instruction Execution Time | 15 ns (66 MIPS) for 3.3-V Power Supply |
Key Features
- 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 and Address Bus with a bus holder feature
- Extended Addressing Mode for 8M × 16-Bit maximum addressable external program space
- On-Chip ROM with some configurable to program/data memory
- Dual-Access On-Chip RAM and Single-Access On-Chip RAM
- 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 and instructions with two- or three-operand reads
- Arithmetic Instructions with parallel store and parallel load
- Conditional Store Instructions and Fast Return From Interrupt
- On-Chip Peripherals including Time-Division Multiplexed (TDM) Serial Port, Buffered Serial Port (BSP), and 8-Bit Parallel Host Port Interface (HPI)
- One 16-Bit Timer and External-Input/Output (XIO) Off Control
- Power Consumption Control with IDLE1, IDLE2, and IDLE3 Instructions with Power-Down Modes
- CLKOUT Off Control and On-Chip Scan-Based Emulation Logic, IEEE Std 1149.1 (JTAG) Boundary Scan Logic
Applications
The TMS320LC548PGE-66 is suitable for a variety of digital signal processing applications, including but not limited to:
- Audio and Video Processing
- Telecommunications and Networking
- Medical Imaging and Diagnostics
- Industrial Control Systems
- Aerospace and Defense Systems
- Automotive Systems
Q & A
- What is the architecture of the TMS320LC548PGE-66?
The TMS320LC548PGE-66 is based on an advanced modified Harvard architecture with one program memory bus and three data memory buses.
- What is the maximum operating frequency of the TMS320LC548PGE-66?
The maximum operating frequency is 66 MHz.
- What is the maximum operating temperature of the TMS320LC548PGE-66?
The maximum operating temperature is 100 °C.
- What type of package does the TMS320LC548PGE-66 come in?
The TMS320LC548PGE-66 comes in a 144-pin Thin Quad Flatpack (TQFP) package.
- What are the key features of the ALU in the TMS320LC548PGE-66?
The ALU includes a 40-bit barrel shifter and two independent 40-bit accumulators, and supports non-pipelined single-cycle multiply/accumulate (MAC) operations.
- Does the TMS320LC548PGE-66 have on-chip memory?
Yes, it includes on-chip ROM and RAM, with some configurable to program/data memory.
- What are some of the on-chip peripherals available in the TMS320LC548PGE-66?
The peripherals include Time-Division Multiplexed (TDM) Serial Port, Buffered Serial Port (BSP), 8-Bit Parallel Host Port Interface (HPI), and a 16-Bit Timer.
- How does the TMS320LC548PGE-66 manage power consumption?
The processor includes IDLE1, IDLE2, and IDLE3 instructions with power-down modes to control power consumption.
- Does the TMS320LC548PGE-66 support boundary scan logic?
Yes, it supports IEEE Std 1149.1 (JTAG) boundary scan logic.
- What are some typical applications of the TMS320LC548PGE-66?
Typical applications include audio and video processing, telecommunications, medical imaging, industrial control systems, aerospace and defense systems, and automotive systems.
