Overview
The TMS320P25FNL, part of the TMS320 family of digital signal processors (DSPs) from Texas Instruments, is a powerful and versatile 16-bit DSP. Introduced as part of the second generation of TMS320 devices, this processor combines the flexibility of a high-speed controller with the numerical capability of an array processor. The TMS320P25FNL is processed in CMOS technology, which offers low power dissipation and high performance.
This DSP is architecturally similar to the TMS320C25 and TMS320E25, with enhancements that include a modified Harvard architecture, allowing for separate address spaces for program and data memory while enabling data transfers between these spaces. This architecture facilitates high-speed processing and flexibility, making it suitable for a wide range of digital signal processing applications.
Key Specifications
| Specification | Value |
|---|---|
| Instruction Cycle Time | 100 ns (TMS320C25), 80 ns (TMS320C25-50) |
| On-Chip Data RAM | 544 words |
| On-Chip Program Memory | 4K words of Program ROM (TMS320C25), 4K words of Program EPROM (TMS320E25) |
| Total Memory Space | 128K words of Total Data/Program Memory Space |
| Package Options | 68-Pin Grid Array (PGA), 68-Lead Plastic Leaded Chip Carrier (PLCC), 68-Lead CER-QUAD |
| Supply Voltage | Single 5-V Supply |
| Technology | CMOS |
Key Features
- 100-ns instruction cycle time (TMS320C25), 80-ns instruction cycle time (TMS320C25-50)
- 544 words of on-chip data RAM
- 4K words of on-chip program ROM (TMS320C25) or EPROM (TMS320E25)
- 128K words of total program/data memory space
- Object-code compatible with the TMS32020
- Source-code compatible with TMS320C1x
- 24 additional instructions to support adaptive filtering, FFTs, and extended-precision arithmetic
- Single-cycle multiply/accumulate instructions
- Eight auxiliary registers with dedicated arithmetic unit
- Bit-reversed indexed-addressing mode for radix-2 FFTs
- Double-buffered serial port
- On-chip clock generator
- Repeat feature for instructions such as multiply/accumulates, block moves, I/O transfers
Applications
The TMS320P25FNL is designed for a variety of digital signal processing applications, including:
- Audio and video processing
- Image processing and computer graphics
- Telecommunications and networking
- Industrial control and automation
- Medical imaging and diagnostics
- Multiprocessing and interfacing with codecs, serial analog-to-digital converters
Q & A
- What is the instruction cycle time of the TMS320P25FNL?
The instruction cycle time is 100 ns for the TMS320C25 and 80 ns for the TMS320C25-50.
- How much on-chip data RAM does the TMS320P25FNL have?
The TMS320P25FNL has 544 words of on-chip data RAM.
- What types of on-chip program memory are available?
The TMS320C25 has 4K words of on-chip program ROM, while the TMS320E25 has 4K words of on-chip program EPROM.
- Is the TMS320P25FNL compatible with other TMS320 models?
Yes, it is object-code compatible with the TMS32020 and source-code compatible with the TMS320C1x.
- What are some of the key features of the TMS320P25FNL?
Key features include single-cycle multiply/accumulate instructions, eight auxiliary registers, bit-reversed indexed-addressing mode, and a double-buffered serial port.
- What is the architecture of the TMS320P25FNL?
The TMS320P25FNL uses a modified Harvard architecture, allowing for separate address spaces for program and data memory while enabling data transfers between these spaces.
- What are the packaging options for the TMS320P25FNL?
The packaging options include 68-Pin Grid Array (PGA), 68-Lead Plastic Leaded Chip Carrier (PLCC), and 68-Lead CER-QUAD.
- What is the supply voltage for the TMS320P25FNL?
The supply voltage is a single 5-V supply.
- What are some common applications of the TMS320P25FNL?
Common applications include audio and video processing, image processing, telecommunications, industrial control, and medical imaging.
- Does the TMS320P25FNL support multiprocessing?
Yes, it supports multiprocessing and interfacing with codecs, serial analog-to-digital converters through its serial port.
