Overview
The TMS320C25, produced by Texas Instruments, is a member of the second-generation TMS320 family of 16/32-bit single-chip digital signal processors. This device combines the flexibility of a high-speed controller with the numerical capability of an array processor, offering an inexpensive alternative to multichip bit-slice processors. The TMS320C25 is processed in CMOS technology, which provides low power dissipation and high performance. It is pin-for-pin and object-code compatible with the TMS32020, making it a versatile choice for various applications.
Key Specifications
| Specification | Value |
|---|---|
| Instruction Cycle Time | 100 ns (TMS320C25), 80 ns (TMS320C25-50) |
| On-Chip Data RAM | 544 words |
| On-Chip Program ROM | 4K words (TMS320C25), 4K words of EPROM (TMS320E25) |
| Total Data/Program Memory Space | 128K words |
| ALU/Accumulator | 32-bit |
| Multiply Capability | 16 × 16-bit multiplier with a 32-bit product |
| Serial Port | Double-buffered serial port for direct codec interface |
| Power Supply | Single 5-V supply |
| Packaging | 68-Pin PGA, PLCC, and CER-QUAD |
Key Features
- High-speed instruction execution with up to 12.5 MIPS
- 24 additional instructions to support adaptive filtering, FFTs, and extended-precision arithmetic
- Eight auxiliary registers with dedicated arithmetic unit
- Bit-reversed indexed-addressing mode for radix-2 FFTs
- Block moves for data/program management
- Single-cycle multiply/accumulate instructions
- On-chip timer for control operations
- Synchronization input for synchronous multiprocessor configurations
- Wait states for communication to slower off-chip memories/peripherals
- Internal clock generator and serial interface for multiprocessing or interfacing to codecs
Applications
The TMS320C25 is suitable for a wide range of applications that require high-speed digital signal processing, including:
- Audio and speech processing
- Image processing
- Telecommunications
- Industrial control systems
- Medical devices
- Military and aerospace systems
Q & A
- What is the instruction cycle time of the TMS320C25?
The instruction cycle time of the TMS320C25 is 100 ns, while the TMS320C25-50 has an instruction cycle time of 80 ns.
- How much on-chip data RAM does the TMS320C25 have?
The TMS320C25 has 544 words of on-chip data RAM.
- What types of on-chip program memory are available in the TMS320C25 and TMS320E25?
The TMS320C25 has 4K words of on-chip program ROM, while the TMS320E25 has 4K words of on-chip program EPROM.
- What is the total data/program memory space of the TMS320C25?
The total data/program memory space is 128K words.
- Does the TMS320C25 support multiprocessing configurations?
Yes, the TMS320C25 supports synchronous multiprocessor configurations with a synchronization input.
- What is the power supply requirement for the TMS320C25?
The TMS320C25 requires a single 5-V supply.
- What packaging options are available for the TMS320C25?
The TMS320C25 is available in 68-Pin PGA, PLCC, and CER-QUAD packages.
- Is the TMS320C25 compatible with other TMS320 family members?
Yes, the TMS320C25 is pin-for-pin and object-code compatible with the TMS32020 and source-code compatible with the TMS320C1x family.
- What additional features does the TMS320C25 have compared to the TMS32020?
The TMS320C25 includes 24 additional instructions, eight auxiliary registers, a bit-reversed indexed-addressing mode, and an on-chip clock generator, among other enhancements.
- Can the TMS320C25 interface with slower external memories?
Yes, the TMS320C25 can interface with slower external memories using wait states and the READY line.
