Overview
The ADSP-2191MBST-140 is a 16-bit fixed-point Digital Signal Processor (DSP) from Analog Devices Inc. This processor is part of the ADSP-2191 family and is software compatible with the ADSP-218x family, offering enhanced performance and improved C-compiler efficiency. The ADSP-2191M is known for its easy-to-use algebraic assembly syntax and is designed to provide significant performance increases over its predecessors.
The processor features a robust set of peripherals, including multiple serial ports, a UART port, SPI-compatible ports, and a host port with DMA capability. It is available in a 144-lead LQFP package and supports a wide range of operating temperatures.
Key Specifications
| Parameter | Specification |
|---|---|
| Processor Type | 16-bit Fixed-Point DSP |
| Performance | 160 MIPS |
| On-Chip RAM | 160K bytes (32K words 24-bit RAM, 32K words 16-bit RAM) |
| Clock Rate | 140 MHz |
| Operating Temperature | -40°C to +85°C |
| Package Type | 144-Lead LQFP |
| Core Voltage | 2.5V |
| I/O Voltage | 3.0V, 3.3V |
| Interfaces | Host Interface, SPI, SSP, UART |
Key Features
- Unified memory space with flexible address generation using two independent Data Address Generators (DAGs)
- Independent ALU, Multiplier/Accumulator, and Barrel Shifter computational units with dual 40-bit accumulators
- Three multichannel serial ports supporting A-law or µ-law companding and T1/E1/H100 telecommunications standards
- UART port and two SPI-compatible ports with slave select hardware
- Host port with DMA capability for glueless interface to 8- or 16-bit host processors
- External memory interface shared by the DSP’s core, DMA controller, and DMA-capable peripherals
- User-selectable low-power operating modes
- Programmable Flag pins and extensive interrupt capabilities
- Support for word packing to access 16- or 24-bit words from external memory
Applications
- Telecommunications: Supports T1/E1/H100 telecommunications standards, making it suitable for various telecommunication applications.
- Audio Processing: With its multiple serial ports and support for A-law or µ-law companding, it is ideal for audio processing and compression.
- Industrial Control: The processor’s robust set of peripherals and low-power operating modes make it suitable for industrial control systems.
- Embedded Systems: Its glueless interface to host processors and extensive memory management capabilities make it a good choice for embedded system designs.
- Medical Devices: The processor’s precision and flexibility can be leveraged in medical devices requiring real-time signal processing.
Q & A
- What is the performance of the ADSP-2191MBST-140?
The ADSP-2191MBST-140 operates at 160 MIPS (Million Instructions Per Second).
- What type of memory does the ADSP-2191MBST-140 have?
The processor has 160K bytes of on-chip RAM, configured as 32K words of 24-bit RAM and 32K words of 16-bit RAM.
- What are the operating temperature ranges for the ADSP-2191MBST-140?
The operating temperature range is from -40°C to +85°C.
- What types of interfaces does the ADSP-2191MBST-140 support?
The processor supports Host Interface, SPI, SSP, and UART interfaces).
- Is the ADSP-2191MBST-140 software compatible with other DSPs?
Yes, it is software compatible with DSPs in the ADSP-218x family).
- What is the package type of the ADSP-2191MBST-140?
The processor is available in a 144-Lead LQFP package).
- Does the ADSP-2191MBST-140 support low-power operating modes?
Yes, it supports user-selectable low-power operating modes).
- What are the core and I/O voltages for the ADSP-2191MBST-140?
The core voltage is 2.5V, and the I/O voltage is 3.0V or 3.3V).
- Can the ADSP-2191MBST-140 be used in telecommunications applications?
Yes, it supports T1/E1/H100 telecommunications standards, making it suitable for telecommunications applications).
- What development tools are available for the ADSP-2191MBST-140?
The processor is supported by a complete set of software and hardware development tools, including VisualDSP++, evaluation boards, and JTAG emulators).
