Overview
The ADSP-2185LBST-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 is part of the ADSP-218x series and is designed to provide high performance and flexibility in various signal processing tasks. The ADSP-2185LBST-133 operates at 3.3V and is available in a 100-pin LQFP package, making it suitable for a wide range of applications, including those requiring low power consumption.
Key Specifications
| Parameter | Specification |
|---|---|
| Instruction Cycle Time | 30 ns (33 MIPS sustained performance) |
| On-Chip Memory | 80K bytes (16K words of 24-bit program RAM and 16K words of 16-bit data RAM) |
| Internal DMA Port | 16-bit internal DMA port for high-speed access to on-chip memory (mode selectable) |
| Byte DMA Port | 8-bit DMA to byte memory for transparent program and data memory transfers (mode selectable) |
| Serial Ports | Two double-buffered serial ports with companding hardware and automatic data buffering |
| Interrupts | Six external interrupts and seven internal interrupts |
| Timer | Programmable 16-bit interval timer with prescaler |
| Package | 100-pin LQFP (14mm x 14mm) |
| Power Supply | 3.3V |
Key Features
- ADSP-2100 family code compatible with instruction set extensions, including bit manipulations, new ALU constants, and new multiplication instructions
- Single-cycle instruction execution and single-cycle context switch
- Three computational units: ALU, multiplier/accumulator, and barrel shifter
- Two independent data address generators and a powerful program sequencer with zero overhead looping and conditional instruction execution
- Programmable memory strobe and separate I/O memory space for glueless system design
- Programmable wait state generation for connecting to slow peripheral devices
- UART emulation through software SPORT reconfiguration and ICE-Port emulator interface for debugging
- Power-down circuitry for low power dissipation in idle mode
Applications
The ADSP-2185LBST-133 is suitable for a variety of applications, including:
- Digital signal processing (DSP) tasks such as audio processing, image processing, and telecommunications.
- High-speed numeric processing applications, including scientific simulations and data analysis.
- Battery-operated portable equipment due to its low power consumption features.
- Embedded systems requiring high performance and low power, such as medical devices, industrial control systems, and automotive systems.
Q & A
- What is the primary application of the ADSP-2185LBST-133?
The ADSP-2185LBST-133 is primarily used for digital signal processing (DSP) and other high-speed numeric processing applications.
- What is the instruction cycle time of the ADSP-2185LBST-133?
The instruction cycle time is 30 ns, providing a sustained performance of 33 MIPS.
- How much on-chip memory does the ADSP-2185LBST-133 have?
The device has 80K bytes of on-chip memory, configured as 16K words of 24-bit program RAM and 16K words of 16-bit data RAM.
- What types of serial ports does the ADSP-2185LBST-133 have?
The device features two double-buffered serial ports with companding hardware and automatic data buffering.
- How many external interrupts does the ADSP-2185LBST-133 support?
The device supports up to six external interrupts.
- What is the purpose of the power-down circuitry in the ADSP-2185LBST-133?
The power-down circuitry is designed to meet the low power needs of battery-operated portable equipment.
- What package type is the ADSP-2185LBST-133 available in?
The device is available in a 100-pin LQFP package.
- Does the ADSP-2185LBST-133 support UART emulation?
Yes, the device supports UART emulation through software SPORT reconfiguration.
- What is the ICE-Port emulator interface used for?
The ICE-Port emulator interface is used for debugging in final systems.
- Can the ADSP-2185LBST-133 connect to slow peripheral devices?
Yes, the device supports programmable wait state generation to connect to slow peripheral devices.
