Overview
The TMS320C15NL is a digital signal processor (DSP) from Texas Instruments, part of the TMS320 family's second generation. This device is processed in CMOS technology and is known for its high performance and versatility in various signal processing applications. The TMS320C15NL is object-code compatible with the TMS32020 and source-code compatible with the TMS320C1x family, making it a powerful upgrade for existing systems.
Key Specifications
| Specification | Value |
|---|---|
| Instruction Cycle Time | 100 ns (TMS320C25), 80 ns (TMS320C25-50) |
| On-Chip Data RAM | 544 words (16-bit) |
| On-Chip Program Memory | 4K words of ROM (TMS320C25), 4K words of EPROM (TMS320E25) |
| Total Memory Space | 128K words of total data/program memory space |
| Package Types | 68-Pin PGA, 68-Lead PLCC, 68-Lead CER-QUAD |
| Supply Voltage | Single 5-V Supply |
| Technology | CMOS |
Key Features
- Single-cycle multiply/accumulate instructions with data move option
- Up to eight auxiliary registers with a dedicated arithmetic unit
- Bit-reversed indexed-addressing mode for radix-2 FFTs
- Double-buffered serial port for multiprocessing or interfacing to codecs and serial analog-to-digital converters
- On-chip clock generator and internal security mechanism (for TMS320E25)
- Repeat feature for instructions such as multiply/accumulates, block moves, I/O transfers, and table read/writes
- Memory-mapped 16-bit timer for control operations
- Global data memory interface and block moves for data/program management
- Low-power dissipation inherent to CMOS process
Applications
The TMS320C15NL is designed for a wide range of digital signal processing applications, including:
- Audio and video processing
- Telecommunications and networking
- Medical imaging and diagnostics
- Industrial control and automation
- Military and aerospace systems
- Adaptive filtering and FFTs
- Multiprocessing and interfacing with serial devices
Q & A
- What is the instruction cycle time of the TMS320C15NL?
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 TMS320C15NL have?
The TMS320C15NL 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.
- What are the package options for the TMS320C15NL?
The device is available in 68-Pin PGA, 68-Lead PLCC, and 68-Lead CER-QUAD packages.
- What is the supply voltage for the TMS320C15NL?
The device operates on a single 5-V supply.
- What technology is used in the TMS320C15NL?
The device is processed in CMOS technology.
- Does the TMS320C15NL support multiprocessing?
Yes, it supports multiprocessing through its double-buffered serial port.
- What is the repeat feature in the TMS320C15NL?
The repeat feature allows a single instruction to be performed up to 256 times, making multicycle instructions effectively single-cycle.
- Is the TMS320C15NL compatible with other TMS320 devices?
Yes, it is object-code compatible with the TMS32020 and source-code compatible with the TMS320C1x family.
- What are some common applications of the TMS320C15NL?
Common applications include audio and video processing, telecommunications, medical imaging, industrial control, and military systems.
