Overview
The ADSP-2181BSTZ-133, produced by Analog Devices Inc., is a single-chip microcomputer optimized for digital signal processing (DSP) and other high-speed numeric processing applications. This processor combines the ADSP-2100 family base architecture with additional features such as two serial ports, a 16-bit internal DMA port, a byte DMA port, a programmable timer, Flag I/O, and extensive interrupt capabilities. It is fabricated in a high-speed, double metal, low power, CMOS process, making it suitable for battery-operated portable equipment.
Key Specifications
| Specification | Value |
|---|---|
| Instruction Cycle Time | 25 ns (from 20 MHz Crystal @ 5.0 Volts) |
| Sustained Performance | 40 MIPS |
| On-Chip RAM | 80K Bytes (16K words of program RAM, 16K words of data RAM) |
| Memory Interface | 4 MByte for data tables and program overlays |
| DMA Ports | 16-Bit internal DMA port, 8-Bit DMA to byte memory |
| Package Options | 128-pin TQFP, 128-pin PQFP |
Key Features
- ADSP-2100 Family Code Compatible with Instruction Set Extensions
- Dual Purpose Program Memory for Both Instruction and Data Storage
- Programmable Timer, Flag I/O, and Extensive Interrupt Capabilities
- New Instructions: Bit Manipulations, New ALU Constants, New Multiplication Instruction (x squared), Biased Rounding, Result Free ALU Operations, I/O Memory Transfers, and Global Interrupt Masking
- Power-Down Circuitry for Low Power Needs
Applications
The ADSP-2181 is designed for various high-speed numeric processing and digital signal processing applications. It is particularly suitable for battery-operated portable equipment due to its low power consumption. Common applications include audio processing, image processing, telecommunications, and other real-time signal processing tasks.
Q & A
- What is the instruction cycle time of the ADSP-2181? The instruction cycle time is 25 ns from a 20 MHz crystal at 5.0 volts.
- What is the sustained performance of the ADSP-2181? The sustained performance is 40 MIPS.
- How much on-chip RAM does the ADSP-2181 have? The ADSP-2181 has 80K bytes of on-chip RAM, configured as 16K words of program RAM and 16K words of data RAM.
- What are the package options for the ADSP-2181? The ADSP-2181 is available in 128-pin TQFP and 128-pin PQFP packages.
- Does the ADSP-2181 support low power operation? Yes, the ADSP-2181 includes power-down circuitry to meet the low power needs of battery-operated portable equipment.
- What are some of the new instructions supported by the ADSP-2181? The ADSP-2181 supports new instructions including bit manipulations, new ALU constants, a new multiplication instruction (x squared), biased rounding, result free ALU operations, I/O memory transfers, and global interrupt masking.
- What is the memory interface capability of the ADSP-2181? The ADSP-2181 has a 4 MByte memory interface for storage of data tables and program overlays.
- Does the ADSP-2181 have DMA capabilities? Yes, the ADSP-2181 has a 16-bit internal DMA port and an 8-bit DMA to byte memory.
- What are some common applications of the ADSP-2181? Common applications include audio processing, image processing, telecommunications, and other real-time signal processing tasks.
- Is the ADSP-2181 compatible with the ADSP-2100 family code? Yes, the ADSP-2181 is ADSP-2100 family code compatible with instruction set extensions.
