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Analog Devices Inc. ADSP-2187LKST-210
- Part No.:
- ADSP-2187LKST-210
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2187LKST-210.pdf
- Description:
- IC DSP CONTROLLER 16BIT 100TQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADSP-2187LKST-210 from Analog Devices is a 33 MIPS fixed-point DSP microcomputer with 16K × 24-bit on-chip program RAM, 16K × 16-bit on-chip data RAM, and dual 16-bit synchronous serial ports (SPORT0/SPORT1). It executes instructions in 30 ns cycles, supports zero-overhead looping, and targets real-time audio processing, telecom channel coding, and motor control systems.
For engineers reviewing the ADSP-2187LKST-210 datasheet, ADSP-2187LKST-210 pinout, ADSP-2187LKST-210 application, or ADSP-2187LKST-210 equivalent, key selection criteria include instruction cycle time, on-chip memory configuration, serial port framing flexibility, power-down recovery latency, and ICE-Port™ debug interface compatibility.
Technical Context
The ADSP-2187LKST-210 implements the ADSP-2100 family base architecture with three independent computational units (ALU, MAC, shifter), two data address generators (DAGs), and a zero-overhead program sequencer. Its 3-bus architecture enables simultaneous dual operand fetches per instruction cycle, supporting one ALU operation, one MAC operation, and one shifter operation in parallel.
It integrates a 16-bit internal DMA port (IDMA) for host-mode system interfacing, an 8-bit byte DMA port (BDMA) addressing up to 4 MByte external memory, and programmable 16-bit interval timer with prescaler. Serial ports support hardware companding (A-law/µ-law per G.711), frameless or framed operation, and multichannel TDM on SPORT0.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Instruction Cycle Time | 30 ns - enables 33 MIPS sustained throughput with single-cycle execution of all instructions including context switches. |
| On-Chip Program Memory | 16K × 24-bit RAM - stores both instructions and data; allows dual-operand fetch (one from PM, one from DM) per cycle. |
| On-Chip Data Memory | 16K × 16-bit RAM - supports circular buffer addressing via DAG modulo mode for efficient FIR/IIR filtering. |
| Serial Ports | 2 × bidirectional double-buffered SPORTs - each supports independent framing, 3–16-bit word length, and hardware companding. |
| Power-Down Recovery | 100 CLKIN cycles - minimal latency wake-up from hardware/software-initiated low-power state without context loss. |
| Timer Resolution | Programmable 16-bit counter with 8-bit prescaler - generates precise periodic interrupts for sample-rate timing or task scheduling. |
| ICE-Port™ Interface | 14-pin dedicated emulation port - enables in-circuit debugging without removing ADSP-2187LKST-210 from target board. |
Pinout & Package
ADSP-2187LKST-210 is housed in a 100-lead thin quad flat package (TQFP) with 0.5 mm pitch, compliant with JEDEC MO-153. Pin functions are multiplexed across memory interface, serial I/O, flag I/O, interrupt, and emulation domains, with mode selection determined at RESET via Mode C/B/A pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN / XTAL | Clock input pair | Accepts either 16.67 MHz TTL clock (half-instruction rate) or fundamental-mode crystal; oscillator disabled during power-down. |
| SPORT0[5] | Synchronous serial I/O group | Provides DT0, DR0, TFS0, RFS0, SCLK0 - configurable for frame sync polarity, pulse width, and master/slave clock generation. |
| SPORT1[5] | Reconfigurable serial/flag/interrupt group | Default: DT1, DR1, TFS1, RFS1, SCLK1; software-reconfigurable to IRQ0/IRQ1/FO/FI while retaining serial clock capability. |
| PF0–PF7 | Programmable flag I/O | 8 pins configurable as input/output; PF0–PF2 double as Mode A/B/C select pins during RESET only. |
| IDMA[16] | Host-mode address/data bus | 16-bit multiplexed IAD15:0 used only when Mode C = 1; enables glueless connection to microcontroller or FPGA host systems. |
| PWD / PWDACK | Power management control | PWD asserts hardware power-down; PWDACK confirms entry into low-power state within 100 cycles. |
Key Features
| Feature | Design Value |
|---|---|
| Three Computational Units | Independent ALU, MAC (40-bit accumulator), and shifter enable true parallel arithmetic, multiply-accumulate, and normalization in one cycle. |
| Dual Data Address Generators | Each DAG maintains four post-modified pointers with associated length registers - supports automatic circular buffering for FFTs and filters without CPU overhead. |
| Zero-Overhead Looping | Hardware loop stack and counters eliminate branch instructions in inner loops - critical for deterministic real-time DSP kernels. |
| Flexible Memory Interface Modes | Full Memory Mode (Mode C = 0) supports 14-bit address bus and 24-bit data bus; Host Mode (Mode C = 1) enables 16-bit IDMA for embedded host co-processing. |
| UART Emulation Capability | SPORT reconfiguration via software allows bit-rate programmable asynchronous serial communication without external UART hardware. |
Applications
| Audio Signal Processing | Telecom Channel Coding |
|---|---|
Use Scenario: Real-time stereo audio effects processing in portable soundbars using external AD1847 codec. IC Role / Device Role / Timing Role: Primary DSP executing FIR equalization, dynamic range compression, and sample-rate conversion at 48 kHz. Use Value: On-chip 32K words RAM eliminates external SRAM, reducing BOM cost and PCB area; SPORT0/1 handle full-duplex I2S and TDM streams simultaneously. | Use Scenario: Voiceband modem implementation in DSL gateway with G.711 A-law companding and V.34 line coding. IC Role / Device Role / Timing Role: Baseband processor managing symbol timing recovery, adaptive equalization, and echo cancellation in 10-ms frames. Use Value: Hardware companding reduces CPU load by 35% vs. software-only; 30 ns cycle time ensures sub-10 µs interrupt latency for symbol synchronization. |
| Industrial Motor Control | Embedded Test Equipment |
Use Scenario: Field-oriented control (FOC) of 3-phase BLDC motors in HVAC compressors with current sensing and PWM generation. IC Role / Device Role / Timing Role: Real-time torque/flux loop executor with 20 kHz PWM update rate and ADC-triggered interrupt servicing. Use Value: Dual DAGs manage simultaneous ADC buffer indexing and PWM compare register updates; timer interrupt guarantees jitter-free 50 µs control loop timing. | Use Scenario: Portable spectrum analyzer front-end with 12-bit ADC sampling at 1 MS/s and real-time FFT analysis. IC Role / Device Role / Timing Role: High-speed data acquisition engine performing 1024-point radix-2 FFT and magnitude calculation per trigger event. Use Value: 33 MIPS performance sustains 1.2 kFFT/s throughput; on-chip memory avoids external bus contention during burst transfers from ADC FIFO. |
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-2189MKSTZ-266 | Higher clock speed (266 MHz core, 60 ns cycle), 32K × 24-bit PM, 32K × 16-bit DM, same pinout and instruction set. | Supports higher sample rates (192 kHz audio) and larger FFTs (4096-pt); requires tighter layout for signal integrity. | Select when >33 MIPS throughput or >32K on-chip memory is required; drop-in replacement with no firmware changes. |
| TMS320VC5402PGE | 100 MHz C54x core, 16K × 16-bit RAM, 16-bit EMIF, McBSP serial ports, different instruction set and memory map. | Lacks hardware companding and dual-DAG circular buffering; requires code porting and peripheral driver redesign. | Choose for TI ecosystem compatibility or lower unit cost where G.711 companding and zero-overhead loops are not mandatory. |
Compared with ADSP-2187LKST-210, ADSP-2189MKSTZ-266 delivers 2× peak MIPS with identical architecture and pin compatibility, while TMS320VC5402PGE offers lower cost but demands full software migration and lacks integrated companding and dual-DAG efficiency.
Availability
ADSP-2187LKST-210 is available at Aetrix Electronics and suitable for industrial motor control, telecom voice processing, and portable audio equipment requiring stable component supply across extended product lifecycles.
Supply support for ADSP-2187LKST-210 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADSP-21xx family was designed specifically for real-time embedded DSP applications demanding deterministic low-latency execution, on-chip memory integration, and flexible serial interfacing - targeting audio, communications, and industrial control markets.
FAQ
What clock source options does the ADSP-2187LKST-210 support?
The ADSP-2187LKST-210 accepts either a 16.67 MHz TTL-compatible clock signal applied to CLKIN (with XTAL left unconnected), or a fundamental-mode quartz crystal connected across CLKIN and XTAL pins. The internal oscillator is automatically disabled during power-down to minimize current draw, and crystal startup stabilization time is handled transparently by the device.
Does the ADSP-2187LKST-210 support hardware-based A-law and µ-law companding?
Yes, the ADSP-2187LKST-210 implements G.711-compliant A-law and µ-law companding in hardware within its SPORT peripherals. This offloads the CPU from real-time logarithmic encoding/decoding, reducing instruction cycles by up to 35% in voice codec applications compared to software-only implementations.
How many external interrupts does the ADSP-2187LKST-210 support, and what sensitivity types are available?
The ADSP-2187LKST-210 supports six external interrupts: IRQ2 (edge- or level-sensitive), IRQL0 and IRQL1 (level-sensitive), IRQE (edge-sensitive), plus IRQ0 and IRQ1 (reconfigurable via SPORT1). Sensitivity is programmable through the ICNTL register, and all interrupts except power-down and reset are individually maskable via the IMASK register.
Can the ADSP-2187LKST-210 operate in a host processor configuration?
Yes, the ADSP-2187LKST-210 supports Host Mode when Mode C is asserted high at RESET, enabling its 16-bit IDMA port (IAD15:0) for direct memory-mapped access to on-chip program and data RAM. In this mode, the device acts as a peripheral coprocessor controlled by a host microcontroller or FPGA, with dedicated IWR, IRD, IAL, IS, and IACK signals.
What is the memory organization of the ADSP-2187LKST-210, and how is it utilized in typical DSP algorithms?
The ADSP-2187LKST-210 contains 16K × 24-bit program memory RAM and 16K × 16-bit data memory RAM. In FIR filter implementations, program memory holds coefficient tables and instruction code, while data memory stores circular input/output buffers managed by dual DAGs - enabling single-cycle dual-operand fetches for optimal MAC throughput without external memory bottlenecks.
ADSP-2187LKST-210 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADSP-21xx
- Package/Case:
- 100-LQFP
- Packaging:
- Bag
- Product Status:
- Obsolete
- Type:
- Fixed Point
- Interface:
- Host Interface, Serial Port
- Clock Rate:
- 52MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 160kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 3.30V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP (14x14)
ADSP-2187LKST-210 FAQ
1.How can I place an order for ADSP-2187LKST-210 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2187LKST-210 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-2187LKST-210 reliable?
The price and inventory of ADSP-2187LKST-210 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2187LKST-210 is usually 5 days.
3.What payment methods are accepted for ADSP-2187LKST-210?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2187LKST-210 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2187LKST-210?
ADSP-2187LKST-210 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2187LKST-210 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-2187LKST-210?
For technical support, including ADSP-2187LKST-210 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2187LKST-210 requirements.
6.How does Aetrix verify that ADSP-2187LKST-210 is sourced from the original manufacturer or authorized distributors?
All ADSP-2187LKST-210 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-2187LKST-210 meets industry standards.
7.What is the process for return or replacement of ADSP-2187LKST-210?
All ADSP-2187LKST-210 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2187LKST-210, 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-2187LKST-210 part is unused and in its original packaging.
Return procedure for ADSP-2187LKST-210:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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