Overview
The ADSP-2181BSZ-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 device combines the ADSP-2100 family base architecture with advanced features such as two serial ports, a 16-bit internal DMA port, a byte DMA port, a programmable timer, and extensive interrupt capabilities. It is particularly suited for applications requiring high performance and low power consumption, making it ideal for battery-operated portable equipment.
Key Specifications
| Specification | Details |
|---|---|
| Instruction Cycle Time | 25 ns from 20 MHz crystal @ 5.0 Volts |
| Sustained Performance | 40 MIPS |
| On-Chip Memory | 80K Bytes: 16K words (24-bit) Program Memory RAM, 16K words (16-bit) Data Memory RAM |
| External Memory Interface | Up to 4 MBytes of external RAM or ROM via Byte DMA port |
| Internal DMA Port | 16-bit IDMA port for high-speed access to on-chip memory |
| Serial Ports | Two synchronous serial ports (SPORTs) with optional companding and various data transmit/receive modes |
| Interrupts | Up to six external interrupts and seven internal interrupts |
| Package | 128-pin TQFP or 128-pin PQFP |
| Operating Voltage | 2.4 V to 5.5 V |
Key Features
- ADSP-2100 family code compatible with instruction set extensions
- Dual-purpose program memory for both instruction and data storage
- Single-cycle instruction execution and single-cycle context switch
- Three-bus architecture allowing dual operand fetches in every instruction cycle
- Power-down mode with low CMOS standby power dissipation and 100 cycle recovery
- Programmable timer and flag I/O
- Extensive interrupt capabilities including up to six external and seven internal interrupts
- Support for slow memories and I/O memory-mapped peripherals with programmable wait state generation
Applications
The ADSP-2181 is suitable for a wide range of applications, including:
- Digital signal processing in audio, image, and video systems
- High-speed numeric processing in scientific and engineering applications
- Battery-operated portable equipment due to its low power consumption
- Embedded systems requiring high performance and low power
- Telecommunications and networking equipment
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.
- How much on-chip memory does the ADSP-2181 have?
The ADSP-2181 has 80K bytes of on-chip memory, configured as 16K words of program memory RAM and 16K words of data memory RAM.
- What types of serial ports does the ADSP-2181 have?
The ADSP-2181 has two synchronous serial ports (SPORTs) with optional companding and various data transmit/receive modes.
- How many interrupts can the ADSP-2181 handle?
The ADSP-2181 can handle up to six external interrupts and seven internal interrupts.
- What is the power-down mode of the ADSP-2181?
The ADSP-2181 features a power-down mode with low CMOS standby power dissipation and a 100 cycle recovery from the power-down condition.
- What is the maximum operating voltage of the ADSP-2181?
The maximum operating voltage is 5.5 Volts).
- What package options are available for the ADSP-2181?
The ADSP-2181 is available in 128-pin TQFP and 128-pin PQFP packages).
- Can the ADSP-2181 access external memory?
Yes, the ADSP-2181 can access up to 4 MBytes of external RAM or ROM via the Byte DMA port).
- What is the purpose of the internal DMA port in the ADSP-2181?
The 16-bit internal DMA port provides high-speed access to the on-chip program and data RAM).
- 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).
