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Analog Devices Inc. ADSP-2187LKST-160
- Part No.:
- ADSP-2187LKST-160
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2187LKST-160.pdf
- Description:
- IC DSP CONTROLLER 16BIT 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:10,259
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Product details
Overview
ADSP-2187LKST-160 from Analog Devices is a 33 MIPS fixed-point DSP microcomputer optimized for real-time audio, telecom, and industrial control applications. It features 16K × 24-bit on-chip program RAM, 16K × 16-bit on-chip data RAM, dual 16-bit synchronous serial ports (SPORT0/SPORT1), a 16-bit internal DMA port, and 13 programmable flag pins in a 100-lead TQFP package.
For engineers reviewing the ADSP-2187LKST-160 datasheet, ADSP-2187LKST-160 pinout, ADSP-2187LKST-160 application, or ADSP-2187LKST-160 equivalent, key selection criteria include instruction cycle time (30 ns), power-down recovery latency (100 CLKIN cycles), SPORT hardware companding support (A-law/µ-law per G.711), and host/full memory mode configurability via Mode C pin at reset.
Technical Context
The ADSP-2187LKST-160 implements the ADSP-2100 family base architecture with three independent computational units (ALU, MAC, shifter), two dedicated data address generators (DAG1/DAG2), and a zero-overhead program sequencer supporting conditional jumps and nested loops. Its 3-bus architecture enables simultaneous dual operand fetches - one from program memory and one from data memory - in every instruction cycle.
It supports dual-mode system interfacing: Full Memory Mode (14-bit address bus, 24-bit data bus) for external overlay memory and I/O peripherals, or Host Mode (16-bit multiplexed IDMA address/data bus) for glueless connection to host processors. Serial port configuration is software-defined via System Control Register, enabling SPORT1 reassignment to IRQ0/IRQ1/Flag In/Flag Out functions.
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 ALU, MAC, and shifter operations. |
| On-Chip Memory | 80 KB total: 16K × 24-bit program RAM + 16K × 16-bit data RAM - eliminates need for external program ROM in boot-critical applications. |
| Serial Ports | Two double-buffered SPORTs - support frame-synchronized or frameless operation, 3–16-bit word length, and hardware A-law/µ-law companding per CCITT G.711. |
| Power-Down Recovery | 100 CLKIN cycles - allows rapid wake-up from ultra-low-power dormant state without external reset or clock stabilization delay. |
| Interrupt Capability | 11 total interrupts: 6 external (configurable edge/level-sensitive), 5 internal (timer, SPORTs, BDMA, power-down) - supports deterministic real-time response with maskable priority levels. |
| Memory Interface Modes | Full Memory Mode (A13:0/D23:0) or Host Mode (IAD15:0/IWR/IRD) - selected by Mode C pin at RESET; no runtime switching. |
| Package | 100-lead TQFP (14 mm × 14 mm, 0.5 mm pitch) - surface-mount compatible with standard reflow profiles and IPC-7351B land pattern. |
Pinout & Package
ADSP-2187LKST-160 is housed in a 100-lead thin quad flat pack (TQFP) with exposed thermal pad. Pin functionality is divided across common-mode, memory interface, serial port, flag/interrupt, and emulation domains. Multiplexing is static (mode pins) or dynamic (SPORT/flag reconfiguration via software).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Asynchronous processor reset input | Active-low signal that initializes all registers, clears stacks, and forces Mode C sampling for memory mode selection. |
| CLKIN / XTAL | Clock source inputs | Dual-purpose: accepts either TTL-compatible 16.67 MHz external clock (half-instruction rate) or parallel-resonant crystal (fundamental mode) across pins. |
| SPORT0 (SCLK0, RFS0, TFS0, DT0, DR0) | Synchronous serial interface | Independent transmit/receive sections with programmable clock generation, framing, and autobuffering - supports TDM, I²S-like, or custom protocols. |
| SPORT1 (SCLK1, RFS1, TFS1, DT1, DR1) | Reconfigurable serial/flag/interrupt interface | Software-selectable between serial port mode or dual IRQ + Flag In/Flag Out - enables flexible system signaling without additional GPIO. |
| PF0–PF7 | Programmable flag I/O | Eight bidirectional pins; PF0–PF2 serve as Mode A/B/C during RESET only; PF3–PF7 retain concurrent IRQ/flag function on shared pins. |
| IDMA Port (IAD15:0, IWR, IRD, IAL, IS, IACK) | Host processor interface | 16-bit multiplexed address/data bus with handshake signals - provides transparent access to on-chip RAM without external glue logic in embedded host systems. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-overhead looping | Hardware loop stack and internal counters eliminate branch penalty - critical for FIR/IIR filter kernels and FFT butterflies. |
| Hardware companding | Integrated A-law and µ-law encoding/decoding per G.711 - offloads CPU in voice codec implementations, reducing instruction count by >40% vs. software-only. |
| Power-down with context retention | Software- or hardware-initiated low-power state with configurable context save/restore - enables battery-powered portable audio recorders with <5 µA standby current. |
| Dual DAG architecture | Two independent address generators each managing four pointer registers with modulo addressing - enables efficient circular buffer access for real-time streaming buffers. |
| ICE-Port™ emulation interface | 14-pin dedicated debug port supporting in-circuit emulation without target board modification - allows full-speed debugging, breakpoint setting, and register/memory inspection in final hardware. |
| Instruction set extensions | Bit manipulation (SET/CLR/TOG/TEST), x² multiply, biased rounding, global interrupt masking - accelerates bit-field processing in protocol stacks and control logic. |
Applications
| Voice Communications Terminal | Digital Audio Processing System |
|---|---|
Use Scenario: Real-time echo cancellation and DTMF detection in VoIP gateway hardware. IC Role / Device Role / Timing Role: Primary signal processor executing adaptive LMS algorithms and tone generation with deterministic 125 µs frame latency. Use Value: Dual SPORTs enable simultaneous PCM stream handling (Rx/Tx), while hardware companding reduces codec overhead and preserves SNR in 8-bit µ-law telephony interfaces. |
Use Scenario: Multi-channel audio effects engine in professional mixing console. IC Role / Device Role / Timing Role: Dedicated audio DSP running FIR-based equalization, dynamics processing, and sample-rate conversion at 48 kHz. Use Value: 33 MIPS throughput and zero-overhead loops sustain 64-tap filters per channel; on-chip RAM avoids external memory bottlenecks in high-bandwidth audio paths. |
| Industrial Motor Control Platform | Medical Signal Acquisition Module |
Use Scenario: Closed-loop field-oriented control (FOC) for servo drives with real-time current/voltage feedback. IC Role / Device Role / Timing Role: Real-time controller executing Clarke/Park transforms, PI regulators, and SVM modulation within 50 µs control cycle. Use Value: Dual DAGs manage simultaneous ADC buffer reads and PWM update writes; programmable timer triggers precise 20 kHz PWM carrier synchronization. |
Use Scenario: Portable ECG monitor with analog front-end digitization and QRS complex detection. IC Role / Device Role / Timing Role: Low-power signal conditioner performing baseline wander correction, bandpass filtering, and R-peak detection on 12-bit sampled data. Use Value: Power-down mode achieves <10 µA standby with 100-cycle wake-up - extends battery life to >72 hours; SPORT0 interfaces directly to low-power ADC via SPI-compatible framing. |
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-160 | Same ADSP-2100 core, but with extended temperature range (–40°C to +105°C) and enhanced ESD rating (±4 kV HBM); identical pinout and memory map. | Required for automotive under-hood or industrial ambient environments exceeding 85°C junction temperature. | Select when operating ambient exceeds 85°C or MIL-STD-883 Class B reliability is mandated. |
| TMS320VC5402PGE | 16-bit C54x architecture; 100 MIPS @ 100 MHz; different instruction set, memory map, and peripheral register layout; no native G.711 companding. | Higher throughput for computationally intensive tasks (e.g., multi-band acoustic echo cancellation), but requires full firmware porting and new PCB layout. | Choose only if migrating legacy C54x codebase or requiring >33 MIPS; not drop-in compatible. |
Compared with ADSP-2187LKST-160, the ADSP-2189MKSTZ-160 offers identical functionality with extended thermal and reliability specs, while the TMS320VC5402PGE delivers higher raw performance at the cost of architectural incompatibility and no hardware companding - making the former a direct upgrade path and the latter a redesign-level alternative.
Availability
ADSP-2187LKST-160 is available at Aetrix Electronics and suitable for voice communications terminals, digital audio processing systems, and industrial motor control platforms requiring stable component supply, long-term lifecycle assurance, and traceable sourcing from authorized channels.
Supply support for ADSP-2187LKST-160 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, founded in 1965 and headquartered in Wilmington, MA.
The ADSP-21xx family was designed specifically for real-time embedded signal processing in resource-constrained systems - emphasizing deterministic latency, low-power operation, and integrated peripherals to minimize external component count in audio, telecom, and control applications.
FAQ
What is the maximum operating frequency and instruction throughput of the ADSP-2187LKST-160?
The ADSP-2187LKST-160 operates with a 30 ns instruction cycle time, delivering 33 million instructions per second (MIPS) sustained throughput. This is achieved using a 16.67 MHz external clock (or equivalent crystal frequency), which the internal PLL doubles to generate the 33.33 MHz core instruction clock. All instructions - including ALU, MAC, and shifter operations - execute in a single cycle, and the architecture supports dual operand fetches per cycle via its 3-bus design. The ADSP-2187LKST-160 does not support overclocking beyond this rated specification.
Does the ADSP-2187LKST-160 support hardware-based A-law and µ-law companding?
Yes, the ADSP-2187LKST-160 integrates dedicated hardware companding engines in both SPORT0 and SPORT1, compliant with CCITT Recommendation G.711 for A-law and µ-law encoding/decoding. This capability operates transparently during serial data transfers without consuming CPU cycles, significantly reducing software overhead in telephony and voice codec applications. Companding is enabled per-port via the SPORT control registers and applies to all data words transferred through the configured serial interface.
How is memory mode selected on the ADSP-2187LKST-160, and can it be changed dynamically?
Memory mode (Full Memory Mode vs. Host Mode) on the ADSP-2187LKST-160 is selected exclusively by the logic level on the Mode C pin (multiplexed with PF2) sampled during device RESET. It cannot be changed during normal operation. In Full Memory Mode (Mode C = 0), the device exposes A13:0 and D23:0 for external memory expansion; in Host Mode (Mode C = 1), it activates the 16-bit multiplexed IDMA port (IAD15:0) with dedicated control signals (IWR, IRD, IAL, IS, IACK). External pull-up/down resistors or active drivers synchronized to RESET are used for reliable mode selection.
What debug and emulation capabilities does the ADSP-2187LKST-160 provide?
The ADSP-2187LKST-160 includes an on-chip ICE-Port™ interface - a 14-pin dedicated emulation port supporting full in-circuit debugging without removing the device from the target board. It enables real-time register and memory inspection, up to 20 hardware breakpoints, single-step or full-speed execution, PC upload/download, and C source-level debugging via compatible EZ-ICE® emulators. The ICE-Port™ requires no pin multiplexing or mode switching, and its compact footprint allows integration into final production PCB layouts.
Can the ADSP-2187LKST-160 enter low-power states, and what is the wake-up latency?
Yes, the ADSP-2187LKST-160 supports three low-power modes: Power-Down, Idle, and Slow Idle. In Power-Down mode, it achieves ultra-low standby current and recovers in exactly 100 CLKIN cycles - independent of clock source (crystal or external TTL). Idle mode halts execution until an unmasked interrupt occurs, while Slow Idle (IDLE(n)) reduces internal clock frequency by factors of 16, 32, 64, or 128. All modes preserve on-chip RAM contents and allow context restoration upon wake-up, making them suitable for battery-powered portable devices.
ADSP-2187LKST-160 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:
- 40MHz
- 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-160 FAQ
1.How can I place an order for ADSP-2187LKST-160 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2187LKST-160 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-160 reliable?
The price and inventory of ADSP-2187LKST-160 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-160 is usually 5 days.
3.What payment methods are accepted for ADSP-2187LKST-160?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2187LKST-160 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2187LKST-160?
ADSP-2187LKST-160 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2187LKST-160 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-160?
For technical support, including ADSP-2187LKST-160 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2187LKST-160 requirements.
6.How does Aetrix verify that ADSP-2187LKST-160 is sourced from the original manufacturer or authorized distributors?
All ADSP-2187LKST-160 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-160 meets industry standards.
7.What is the process for return or replacement of ADSP-2187LKST-160?
All ADSP-2187LKST-160 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2187LKST-160, 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-160 part is unused and in its original packaging.
Return procedure for ADSP-2187LKST-160:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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