Overview
The TMS320C25FNL33, produced by Texas Instruments, is a member of the second-generation TMS320 family of digital signal processors (DSPs). This device combines the flexibility of a high-speed controller with the numerical capability of an array processor, offering an efficient alternative to multichip bit-slice processors. The TMS320C25 is processed in CMOS technology, which provides low power dissipation and enhanced performance. It is pin-for-pin and object-code compatible with the TMS32020, ensuring seamless integration into existing systems.
Key Specifications
| Specification | Value |
|---|---|
| Instruction Cycle Time | 100 ns (TMS320C25), 80 ns (TMS320C25-50) |
| On-Chip Data RAM | 544 words |
| On-Chip Program ROM/EPROM | 4K words (ROM for TMS320C25, EPROM for TMS320E25) |
| Total Program/Data Memory Space | 128K words |
| ALU/Accumulator | 32-bit |
| Multiplier | 16 × 16-bit with a 32-bit product |
| Packaging | 68-Pin PGA, PLCC, and CER-QUAD |
| Operating Temperature Range | -40°C to 85°C |
| Supply Voltage | Single 5-V supply |
Key Features
- Enhanced instruction set with 133 instructions, including single-cycle multiply/accumulate instructions and block moves for data/program management.
- Eight auxiliary registers with a dedicated arithmetic unit.
- Bit-reversed indexed-addressing mode for radix-2 FFTs.
- Double-buffered serial port for direct codec interface.
- On-chip timer for control operations.
- Synchronization input for synchronous multiprocessor configurations.
- Wait states for communication to slow off-chip memories/peripherals.
- 68-to-28 pin conversion adapter socket for EPROM programming.
- Internal security mechanism (for TMS320E25).
Applications
The TMS320C25 is designed for a wide range of digital signal processing applications, including:
- Adaptive filtering
- Fast Fourier Transforms (FFTs)
- Extended-precision arithmetic
- Audio and speech processing
- Image processing
- Control systems
- Multiprocessor configurations
Q & A
- What is the instruction cycle time of the TMS320C25?
The instruction cycle time of the TMS320C25 is 100 ns, while the high-speed version TMS320C25-50 has an instruction cycle time of less than 80 ns.
- How much on-chip data RAM does the TMS320C25 have?
The TMS320C25 has 544 words of on-chip data RAM.
- What type of multiplier does the TMS320C25 feature?
The TMS320C25 features a 16 × 16-bit multiplier with a 32-bit product.
- Is the TMS320C25 compatible with other TMS320 models?
Yes, the TMS320C25 is pin-for-pin and object-code compatible with the TMS32020.
- What are the packaging options for the TMS320C25?
The TMS320C25 is available in 68-Pin PGA, PLCC, and CER-QUAD packages.
- Does the TMS320C25 support multiprocessor configurations?
Yes, the TMS320C25 has synchronization inputs for synchronous multiprocessor configurations.
- What is the operating temperature range of the TMS320C25?
The operating temperature range of the TMS320C25 is -40°C to 85°C.
- Does the TMS320C25 have an on-chip timer?
Yes, the TMS320C25 features an on-chip timer for control operations.
- Is there an EPROM version of the TMS320C25?
Yes, the TMS320E25 is an EPROM version of the TMS320C25, allowing for real-time code development and modification.
- What is the supply voltage requirement for the TMS320C25?
The TMS320C25 requires a single 5-V supply.
