Overview
The TMS320C25FNLR50 is a high-performance digital signal processor (DSP) from Texas Instruments, part of the TMS320 second-generation family. This device is processed in CMOS technology, offering low power consumption and high performance. It is pin-for-pin and object-code compatible with the TMS32020, ensuring seamless integration into existing systems. The TMS320C25FNLR50 features an instruction cycle time of 100 ns, making it suitable for a wide range of digital signal processing applications.
Key Specifications
| Specification | Value |
|---|---|
| Instruction Cycle Time | 100 ns |
| On-Chip Data RAM | 544 words (16-bit) |
| On-Chip Program ROM | 4K words (TMS320C25), 4K words of EPROM (TMS320E25) |
| Total Data/Program Memory Space | 128K words |
| ALU/Accumulator | 32-bit |
| Multiplier | 16 × 16-bit with a 32-bit product |
| Supply Voltage | Single 5-V |
| Packaging | 68-Pin PGA, PLCC, and CER-QUAD |
| Timer | Memory-mapped 16-bit timer |
| Serial Port | Double-buffered serial port for direct codec interface |
Key Features
- Enhanced instruction set with 133 instructions, including single-cycle multiply/accumulate instructions and repeat instructions for efficient use of program space.
- Eight auxiliary registers with dedicated arithmetic unit.
- Bit-reversed indexed-addressing mode for radix-2 FFTs.
- On-chip clock generator and synchronization input for synchronous multiprocessor configurations.
- Wait states for communication to slower off-chip memories/peripherals.
- Memory-mapped 16-bit timer for control operations.
- Block moves for data/program management.
- Serial interface for multiprocessing or interfacing to codecs, serial analog-to-digital converters, etc.
- Low power dissipation inherent to CMOS technology.
Applications
The TMS320C25FNLR50 is designed for various digital signal processing applications, including:
- Audio and speech processing
- Image and video processing
- Telecommunications and networking
- Industrial control and automation
- Medical imaging and diagnostics
- Adaptive filtering and FFTs
- Multiprocessing and interfacing with serial devices
Q & A
- What is the instruction cycle time of the TMS320C25FNLR50?
The instruction cycle time of the TMS320C25FNLR50 is 100 ns.
- How much on-chip data RAM does the TMS320C25FNLR50 have?
The TMS320C25FNLR50 has 544 words of on-chip data RAM.
- What type of packaging is available for the TMS320C25FNLR50?
The TMS320C25FNLR50 is available in 68-Pin PGA, PLCC, and CER-QUAD packages.
- Does the TMS320C25FNLR50 support wait states for slower off-chip memories?
Yes, the TMS320C25FNLR50 supports wait states for communication to slower off-chip memories/peripherals.
- What is the purpose of the on-chip timer in the TMS320C25FNLR50?
The on-chip timer is a memory-mapped 16-bit timer used for control operations, generating timer interrupts at regular intervals.
- Is the TMS320C25FNLR50 compatible with other TMS320 family members?
Yes, the TMS320C25FNLR50 is pin-for-pin and object-code compatible with the TMS32020.
- What is the significance of the bit-reversed indexed-addressing mode in the TMS320C25FNLR50?
The bit-reversed indexed-addressing mode is specifically useful for radix-2 FFTs, enhancing the device's capability in signal processing applications.
- Does the TMS320C25FNLR50 have any power-saving features?
Yes, the TMS320C25FNLR50 benefits from low power dissipation due to its CMOS technology.
- Can the TMS320C25FNLR50 be used in multiprocessor configurations?
Yes, the TMS320C25FNLR50 includes synchronization inputs for synchronous multiprocessor configurations.
- What types of instructions does the TMS320C25FNLR50 support?
The TMS320C25FNLR50 supports a wide range of instructions, including single-cycle multiply/accumulate instructions, repeat instructions, and block moves.
