Overview
The TMS320LC548GGU-66 is a fixed-point digital signal processor (DSP) from Texas Instruments, based on an advanced modified Harvard architecture. This processor features one program memory bus and three data memory buses, enabling high parallelism and operational flexibility. It includes an arithmetic logic unit (ALU) with a high degree of parallelism, application-specific hardware logic, on-chip memory, and additional on-chip peripherals. The DSP supports simultaneous access to program instructions and data, allowing for powerful arithmetic, logic, and bit-manipulation operations within a single machine cycle. It also includes control mechanisms for managing interrupts, repeated operations, and function calls.
Key Specifications
| Parameter | Min | Nom | Max | Unit |
|---|---|---|---|---|
| Device Supply Voltage (DVDD) | 3.0 | 3.3 | 3.6 | V |
| Supply Voltage, GND (VSS) | 0 | V | ||
| High-Level Input Voltage (VIH) - Schmitt Trigger Inputs | 2.5 | DVDD + 0.3 | V | |
| Low-Level Input Voltage (VIL) | -0.3 | 0.8 | V | |
| High-Level Output Voltage (VOH) | 2.4 | V | ||
| Low-Level Output Voltage (VOL) | 0.4 | V | ||
| Operating Case Temperature (TC) | -40 | 100 | °C | |
| Storage Temperature Range (Tstg) | -55 | 150 | °C |
Key Features
- Advanced Modified Harvard Architecture: One program memory bus and three data memory buses for high parallelism.
- Arithmetic Logic Unit (ALU): High degree of parallelism for arithmetic, logic, and bit-manipulation operations.
- On-Chip Memory and Peripherals: Includes on-chip memory and additional peripherals for enhanced functionality.
- Simultaneous Access: Allows simultaneous access to program instructions and data.
- Interrupt and Control Mechanisms: Manages interrupts, repeated operations, and function calls.
- Serial Port and Host Port Interfaces: Supports serial port and host port interfaces for various communication modes.
- IEEE 1149.1 Test Pins: Includes test pins for IEEE 1149.1 compliance.
Applications
- Audio and Video Processing: Suitable for real-time audio and video processing applications.
- Telecommunications: Used in telecommunications for signal processing and modulation/demodulation tasks.
- Industrial Control Systems: Applied in industrial control systems for real-time data processing and control.
- Medical Devices: Utilized in medical devices for signal processing and analysis.
- Aerospace and Defense: Employed in aerospace and defense applications requiring high-performance signal processing.
Q & A
- What is the TMS320LC548GGU-66 based on?
The TMS320LC548GGU-66 is based on an advanced modified Harvard architecture.
- What are the key components of the TMS320LC548GGU-66's architecture?
The architecture includes one program memory bus and three data memory buses, an arithmetic logic unit (ALU), on-chip memory, and additional on-chip peripherals.
- What is the significance of the ALU in the TMS320LC548GGU-66?
The ALU supports a high degree of parallelism for arithmetic, logic, and bit-manipulation operations.
- How does the TMS320LC548GGU-66 manage interrupts and control operations?
The DSP includes control mechanisms for managing interrupts, repeated operations, and function calls.
- What are the operating voltage and temperature ranges for the TMS320LC548GGU-66?
The operating voltage range is 3.0 to 3.6 V, and the operating temperature range is -40°C to 100°C.
- What types of interfaces does the TMS320LC548GGU-66 support?
The DSP supports serial port and host port interfaces, as well as IEEE 1149.1 test pins.
- What are some common applications of the TMS320LC548GGU-66?
Common applications include audio and video processing, telecommunications, industrial control systems, medical devices, and aerospace and defense.
- How does the TMS320LC548GGU-66 handle simultaneous access to program instructions and data?
The DSP allows simultaneous access to program instructions and data through its architecture.
- What is the role of the clock mode external/internal input signals (CLKMD1, CLKMD2, CLKMD3)?
These signals allow the selection and configuration of different clock modes, such as crystal, external clock, and various PLL factors.
- What is the purpose of the nonmaskable interrupt (NMI) pin?
The NMI pin is an external interrupt that cannot be masked and causes the processor to trap to the appropriate vector location when activated.
