Overview
The ADSP-2185M, specifically the ADSP-2185MBST-266 model, is a single-chip microcomputer designed by Analog Devices Inc. for digital signal processing (DSP) and other high-speed numeric processing applications. This device integrates the ADSP-2100 family base architecture, which includes three computational units (ALU, multiplier/accumulator, and shifter), data address generators, and a program sequencer. It is optimized for low power consumption, making it suitable for battery-operated portable equipment.
Key Specifications
| Specification | Value |
|---|---|
| Instruction Cycle Time | 13.3 ns @ 2.5 V (Internal) |
| Sustained Performance | 75 MIPS |
| On-Chip Memory | 80K bytes (16K words of 24-bit program RAM, 16K words of 16-bit data RAM) |
| Package Options | 100-lead LQFP, 144-Ball Mini-BGA |
| Serial Ports | Two double-buffered serial ports with companding hardware and automatic data buffering |
| DMA Ports | 16-bit internal DMA port, byte DMA port |
| Timer and Interrupts | Programmable timer, six external interrupts, 13 programmable flag pins |
| Power Consumption | Low power dissipation in idle mode, power-down circuitry for low standby power |
Key Features
- Single-cycle instruction execution and single-cycle context switch
- 3-bus architecture allowing dual operand fetches in every instruction cycle
- ADSP-2100 family code compatible with instruction set extensions
- Automatic booting of on-chip program memory from external memory or through internal DMA port
- UART emulation through software SPORT reconfiguration
- ICE-Port™ emulator interface for debugging in final systems
- Extensive interrupt capabilities and flexible system signaling
Applications
The ADSP-2185M is suitable for a variety of applications, including digital signal processing, high-speed numeric processing, and battery-operated portable equipment. It can be used in audio processing, medical devices, industrial control systems, and other applications requiring high computational performance and low power consumption.
Q & A
- What is the instruction cycle time of the ADSP-2185M at 2.5V? The instruction cycle time is 13.3 ns at 2.5V.
- What is the sustained performance of the ADSP-2185M? The sustained performance is 75 MIPS.
- How much on-chip memory does the ADSP-2185M have? The ADSP-2185M 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 package options are available for the ADSP-2185M? The ADSP-2185M is available in 100-lead LQFP and 144-Ball Mini-BGA packages.
- Does the ADSP-2185M support serial communication? Yes, it has two double-buffered serial ports with companding hardware and automatic data buffering.
- What DMA capabilities does the ADSP-2185M have? It includes a 16-bit internal DMA port and a byte DMA port.
- What are the power management features of the ADSP-2185M? The ADSP-2185M features low power dissipation in idle mode and power-down circuitry for low standby power.
- Is the ADSP-2185M compatible with previous ADSP-2100 family code? Yes, it is ADSP-2100 family code compatible with instruction set extensions.
- How does the ADSP-2185M support debugging? It supports debugging through the ICE-Port™ emulator interface.
- What kind of interrupt capabilities does the ADSP-2185M have? The ADSP-2185M has six external interrupts and 13 programmable flag pins for flexible system signaling.
