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Analog Devices Inc. ADSP-2191MBST-140
- Part No.:
- ADSP-2191MBST-140
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 144-LQFP
- Datasheet:
-
ADSP-2191MBST-140.pdf
- Description:
- IC DSP CONTROLLER 16BIT 144LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADSP-2191MBST-140 from Analog Devices is a 160 MIPS fixed-point DSP microcomputer with dual-memory architecture (32K × 24-bit program RAM + 32K × 16-bit data RAM), three full-duplex serial ports, two SPI-compatible ports, UART, and 16-bit host interface - designed for real-time telecom signal processing, voice coding, and embedded control systems.
For engineers reviewing the ADSP-2191MBST-140 datasheet, ADSP-2191MBST-140 pinout, ADSP-2191MBST-140 application, or ADSP-2191MBST-140 equivalent, key selection criteria include instruction cycle time (6.25 ns), on-chip memory configuration, serial port count and TDM channel support (up to 128), programmable PLL range (1×–32×), and 144-lead LQFP package compatibility.
Technical Context
The ADSP-2191MBST-140 implements a three-unit computational core (ALU, MAC with dual 40-bit accumulators, barrel shifter) with unified 24-bit address space and two independent DAGs supporting circular buffering and zero-overhead looping. Its instruction set enables single-cycle execution of multifunction instructions including dual operand fetches via instruction cache.
System-level integration includes a 16-bit external memory interface (22-bit address bus), DMA controller managing up to 11 concurrent channels, and peripherals with dedicated interrupt vectors - all synchronized to a programmable PLL clock derived from 1–32× multiplication of CLKIN, operating at 2.5 V core / 3.3 V I/O.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Instruction Cycle Time | 6.25 ns - enables sustained 160 MIPS throughput for real-time filtering and codec execution |
| On-Chip Memory | 64K words total: 32K × 24-bit program RAM + 32K × 16-bit data RAM - supports simultaneous instruction/data access without external memory wait states |
| Serial Interfaces | 3 SPORTs (full-duplex, H.100/TDM up to 128 channels) + 2 SPI ports + 1 UART - enables multi-channel voice gateway or baseband modem connectivity |
| Host Interface | 16-bit multiplexed host port with DMA - provides glueless connection to 8/16-bit microcontrollers for system-level control and boot loading |
| Timers & I/O | 3 programmable interval timers (PWM/capture/watchdog) + 16 general-purpose I/O pins (8 PFx with edge/level interrupt support) - suitable for motor control feedback and peripheral event handling |
| Power Supply | 2.5 V core / 3.3 V I/O - reduces dynamic power while maintaining compatibility with standard logic interfaces |
| Package | 144-lead LQFP (BST suffix) - RoHS-compliant surface-mount package with 0.5 mm pitch, validated for industrial temperature operation |
Pinout & Package
ADSP-2191MBST-140 is housed in a 144-lead Low-Profile Quad Flat Package (LQFP) with exposed thermal pad, measuring 20 mm × 20 mm × 1.4 mm. Pin assignments follow the standard ADSP-219x LQFP layout per Analog Devices datasheet Rev. A, pages 43–44.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN / XTAL | Master clock input or crystal oscillator terminal | Accepts 1–50 MHz external clock or 1–20 MHz crystal; feeds programmable PLL for internal 160 MHz core clock generation |
| RESET | Active-low asynchronous reset | Initializes core registers, disables peripherals, and forces boot ROM execution upon deassertion |
| HAD15–0 / HA16 | Host address/data multiplexed bus | 16-bit bidirectional data/address lines with 17th address bit; supports 8/16-bit host interface timing without glue logic |
| TCLK0–2 / RCLK0–2 | Serial port transmit/receive clock inputs | Independent programmable clocks per SPORT enable synchronous TDM frame alignment across multiple devices |
| PF0–7 | Programmable flag I/O pins | Configurable as edge/level-sensitive interrupt sources or general-purpose outputs; mapped to software condition flags for conditional execution |
| MS3–0 | Memory bank select inputs | Determine external memory bank (0–3) for 22-bit address decoding; enable flexible off-chip memory partitioning up to 16M words |
Key Features
| Feature | Design Value |
|---|---|
| Code Compatibility | Fully backward-compatible with ADSP-218x family assembly code - enables migration of legacy telecom firmware without recompilation |
| Dual-Memory Architecture | Separate PM/DM buses allow simultaneous instruction fetch and data load/store - eliminates pipeline stalls in loop-intensive FFT or FIR routines |
| Zero-Overhead Looping | Hardware loop counters and stack eliminate branch instruction overhead - critical for deterministic execution in real-time audio buffers |
| Runtime PLL Reconfiguration | PLL multiplication factor adjustable during operation - supports dynamic clock scaling for power-constrained portable voice applications |
| JTAG Emulation Support | IEEE 1149.1 compliant test access port - enables non-intrusive real-time debugging, breakpoint insertion, and register inspection without halting core execution |
Applications
| Voice over IP Gateway | Industrial Motor Control |
|---|---|
|
Use Scenario: Real-time G.729A speech encoding/decoding with echo cancellation across 32 VoIP channels. IC Role / Device Role / Timing Role: Primary signal processor executing fixed-point arithmetic, managing TDM frame synchronization via SPORT0–2, and coordinating host-based call signaling. Use Value: 160 MIPS throughput and 128-channel TDM support enable concurrent processing of multiple voice streams without external co-processors. |
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM motors with current sensing and PWM generation. IC Role / Device Role / Timing Role: Real-time torque/flux calculation engine interfacing with ADCs via DMA and generating precise PWM waveforms using Timer 0–2 outputs. Use Value: Dual 40-bit accumulators prevent overflow in high-precision motor control math; programmable timers deliver sub-microsecond PWM resolution. |
| Medical Ultrasound Beamformer | Secure Wireless Sensor Hub |
|
Use Scenario: Digital beamforming and RF signal conditioning in portable ultrasound systems with analog front-end ADC/DAC interfacing. IC Role / Device Role / Timing Role: High-speed data acquisition processor receiving sampled RF data via SPORTs, applying FIR filtering, and forwarding processed frames to host MCU. Use Value: 32K × 16-bit data RAM stores multiple line buffers; instruction cache ensures deterministic latency for time-critical beam steering calculations. |
Use Scenario: Aggregation and preprocessing of encrypted sensor data (temperature, vibration, humidity) from Zigbee/Bluetooth LE nodes before transmission to cloud gateway. IC Role / Device Role / Timing Role: Embedded security coprocessor running lightweight AES-128 and CRC-32 algorithms while managing low-power SPI flash storage and UART telemetry uplinks. Use Value: Flexible power-down/idle modes reduce average current to <5 mA; UART DMA offloads host CPU during secure firmware updates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-point DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-2191MKSTZ-140 | Same die, but in 144-ball mini-BGA (KSTZ) instead of LQFP (BST); identical electrical specs and pinout mapping | Better thermal performance and smaller footprint; requires BGA reflow process and X-ray inspection | Select ADSP-2191MKSTZ-140 for space-constrained PCBs where thermal dissipation >1.2 W is expected |
| TMS320VC549PGE | TI C54x DSP: 100 MIPS, 32K × 16-bit RAM, 6-channel DMA, no integrated PLL or TDM support | Lacks native H.100/TDM and programmable PLL; requires external clock generator and glue logic for multi-channel sync | Select TMS320VC549PGE only when legacy C54x toolchain and codebase mandate compatibility over feature parity |
Compared with ADSP-2191MBST-140, the ADSP-2191MKSTZ-140 offers identical functionality in a denser package ideal for thermal management, while the TMS320VC549PGE trades integrated peripherals and clock flexibility for broader ecosystem support - making ADSP-2191MBST-140 optimal for new telecom and real-time control designs requiring minimal external components.
Availability
ADSP-2191MBST-140 is available at Aetrix Electronics and suitable for voice over IP gateways, industrial motor drives, and medical ultrasound systems requiring stable component supply, long-term lifecycle assurance, and industrial-grade temperature tolerance (–40°C to +85°C).
Supply support for ADSP-2191MBST-140 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, founded in 1965 and headquartered in Wilmington, MA.
The ADSP-219x family was engineered for computationally intensive, low-latency embedded signal processing - targeting telecommunications infrastructure, industrial automation, and medical imaging where deterministic real-time performance and peripheral integration are critical.
FAQ
What is the maximum external memory address space supported by the ADSP-2191MBST-140?
The ADSP-2191MBST-140 supports up to 16M words (22-bit address bus) of external memory via its configurable 8-/16-bit external port, segmented into four selectable banks using MS3–0 pins. Each bank can be assigned unique wait-state parameters and page boundaries, enabling interoperability with diverse SRAM, Flash, and boot ROM devices without external address latching logic.
Does the ADSP-2191MBST-140 support booting from external SPI flash?
Yes, the ADSP-2191MBST-140 supports autobaud-detect UART booting and SPI ROM booting through its on-chip boot ROM. When configured for SPI boot mode (BMODE[1:0] = 10), the device initializes SPORT2 as an SPI master to read boot code from external SPI flash, eliminating need for external boot controllers or host intervention.
How many DMA channels are available on the ADSP-2191MBST-140 and what peripherals do they serve?
The ADSP-2191MBST-140 provides up to 11 active DMA channels: one dedicated to each of the three SPORTs (receive/transmit), two SPI ports, UART, Host port, and external memory interface. The DMA controller uses linked descriptor chains to execute complex multi-buffer transfers without CPU intervention, ensuring high-throughput data movement between peripherals and memory.
Can the ADSP-2191MBST-140 operate with a 3.3 V-only supply?
No - the ADSP-2191MBST-140 requires separate 2.5 V core supply (VDDINT) and 3.3 V I/O supply (VDDIO). Applying 3.3 V to VDDINT exceeds absolute maximum ratings and will damage the device. Proper decoupling with 0.1 µF ceramic capacitors per power pin is mandatory to maintain signal integrity and meet timing specifications.
What development tools are officially supported for the ADSP-2191MBST-140?
Analog Devices' VisualDSP++ 3.5 IDE is the officially supported toolchain for ADSP-2191MBST-140, providing C/C++ compilation, cycle-accurate simulation, JTAG-based hardware debugging, and optimized libraries for FFT, FIR, and telephony codecs. Third-party tools like GCC-based ADSP toolchains are unsupported and may not generate correct instruction encodings for the ADSP-219x architecture.
ADSP-2191MBST-140 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADSP-21xx
- Package/Case:
- 144-LQFP
- Packaging:
- Bag
- Product Status:
- Obsolete
- Type:
- Fixed Point
- Interface:
- Host Interface, SPI, SSP, UART
- Clock Rate:
- 140MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 160kB
- Voltage - I/O:
- 3.00V, 3.30V
- Voltage - Core:
- 2.50V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-LQFP (20x20)
ADSP-2191MBST-140 FAQ
1.How can I place an order for ADSP-2191MBST-140 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2191MBST-140 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ADSP-2191MBST-140 reliable?
The price and inventory of ADSP-2191MBST-140 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2191MBST-140 is usually 5 days.
3.What payment methods are accepted for ADSP-2191MBST-140?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2191MBST-140 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2191MBST-140?
ADSP-2191MBST-140 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2191MBST-140 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ADSP-2191MBST-140?
For technical support, including ADSP-2191MBST-140 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2191MBST-140 requirements.
6.How does Aetrix verify that ADSP-2191MBST-140 is sourced from the original manufacturer or authorized distributors?
All ADSP-2191MBST-140 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ADSP-2191MBST-140 meets industry standards.
7.What is the process for return or replacement of ADSP-2191MBST-140?
All ADSP-2191MBST-140 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2191MBST-140, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ADSP-2191MBST-140 part is unused and in its original packaging.
Return procedure for ADSP-2191MBST-140:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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