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Analog Devices Inc. ADSP-2186LKST-115
- Part No.:
- ADSP-2186LKST-115
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2186LKST-115.pdf
- Description:
- IC DSP CONTROLLER 16BIT 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADSP-2186LKST-115 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 synchronous serial ports (SPORT0/SPORT1). It executes instructions in 30 ns cycles, supports zero-overhead looping, and integrates a 16-bit internal DMA port and byte DMA controller for real-time audio and telecom signal processing.
For engineers reviewing the ADSP-2186LKST-115 datasheet, ADSP-2186LKST-115 pinout, ADSP-2186LKST-115 application, or ADSP-2186LKST-115 equivalent, key selection criteria include instruction cycle time, on-chip memory configuration, serial port framing flexibility, power-down recovery latency, and ICE-Port™ emulator interface compatibility.
Technical Context
The ADSP-2186LKST-115 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 subroutine calls in one cycle. Its 3-bus architecture enables simultaneous dual operand fetches - one from program memory and one from data memory - per instruction cycle.
It features two double-buffered serial ports with hardware companding (A-law/µ-law per G.711), programmable 16-bit interval timer with prescaler, 13 programmable flag pins (8 I/O configurable, 3 outputs only), and ICE-Port™ interface for in-circuit emulation without target board modification. Memory interface supports Full Memory Mode (14-bit address, 24-bit data) or Host Mode (16-bit IDMA bus).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Instruction Cycle Time | 30 ns - enables 33 MIPS sustained throughput for real-time FIR/IIR filtering and FFT execution |
| On-Chip Program Memory | 16K × 24-bit RAM - stores both instructions and constants; eliminates external program ROM for compact embedded designs |
| On-Chip Data Memory | 16K × 16-bit RAM - supports dual-operand access per cycle for efficient coefficient/data buffering in audio codecs |
| Serial Ports | 2 × SPORTs - each with independent framing, 3–16-bit word length, and hardware A-law/µ-law companding for telephony interfaces |
| Power-Down Recovery | 100 CLKIN cycles - allows rapid wake-up from low-power state for battery-powered voice recorders or portable modems |
| Package | 100-lead TQFP (14 mm × 14 mm) - surface-mount compatible with standard reflow profiles and thermal management for industrial DSP modules |
| ICE-Port™ Interface | 14-pin dedicated debug port - enables full-speed in-target debugging, breakpoint setting, and register/memory inspection without socket removal |
Pinout & Package
ADSP-2186LKST-115 is housed in a 100-lead thin quad flat package (TQFP) with 0.5 mm pitch, thermally enhanced for continuous 33 MIPS operation. Pin functionality includes multiplexed serial port, flag, interrupt, and memory interface signals, configured at reset (mode pins) or runtime (SPORT/flag software control).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN / XTAL | Clock input pair | Accepts either 16.67 MHz TTL clock or parallel-resonant crystal; determines 30 ns instruction cycle timing |
| SPORT0 (DT0, DR0, TFS0, RFS0, SCLK0) | Synchronous serial interface | Full-duplex TDM-capable port for codec interfacing; supports frame sync polarity inversion and programmable clock generation |
| SPORT1 (DT1, DR1, TFS1, RFS1, SCLK1) | Secondary serial interface | Configurable as second serial port or repurposed for IRQ0/IRQ1 + FI/FO signals in multi-DSP systems |
| PF0–PF7 | Programmable flag I/O | 8 pins software-configurable as inputs/outputs; PF0–PF2 also serve as mode select (Mode A/B/C) during reset |
| PWD / PWDACK | Power-down control | PWD initiates hardware power-down; PWDACK asserts when core enters low-power dormant state |
| RESET | Asynchronous reset input | Active-low signal that initializes all registers, clears stacks, and forces boot sequence from external EPROM or internal DMA |
| EZ-Port (9 pins) | ICE-Port™ emulator interface | Dedicated 14-pin (9 used) boundary-scan-compatible interface for non-intrusive debugging in final PCB layout |
Key Features
| Feature | Design Value |
|---|---|
| Single-cycle instruction execution | Every ALU/MAC/shifter operation completes in 30 ns - enables deterministic real-time response for echo cancellation |
| Dual-operand fetch per cycle | Simultaneous access to program and data memory eliminates pipeline stalls in coefficient-intensive algorithms like adaptive filtering |
| Zero-overhead looping | Hardware loop counters and stack eliminate branch penalties - critical for tight inner loops in FFT and convolution kernels |
| Byte DMA controller | Direct 4 MB addressing of external EPROM/Flash for program overlays - reduces boot time and enables field firmware updates |
| UART emulation via SPORT | Software-reconfigurable serial port supports RS-232 protocol without external UART - saves BOM cost in telemetry endpoints |
Applications
| Voice Recorder System | Telecom Line Card |
|---|---|
Use Scenario: Portable digital voice recorder with flash storage and microphone preamp. IC Role / Device Role / Timing Role: Primary DSP executing A-law compression, AGC, and flash write buffering in real time. Use Value: On-chip 16K × 24-bit program RAM eliminates external PROM; 30 ns cycle time ensures sub-20 ms encode latency. | Use Scenario: Channelized T1/E1 line interface card with echo cancellation and tone detection. IC Role / Device Role / Timing Role: Real-time signal processor handling 24-channel G.711 companding and adaptive filter updates. Use Value: Dual SPORTs support simultaneous TDM stream handling; 16K × 16-bit data RAM accommodates 24-channel coefficient buffers. |
| Industrial Motor Controller | Audio Effects Processor |
Use Scenario: Closed-loop servo drive with current/voltage sensing and PWM generation. IC Role / Device Role / Timing Role: Real-time computation engine performing FOC (field-oriented control) and PID regulation at 10 kHz update rate. Use Value: Zero-overhead looping and single-cycle MAC enable deterministic 10 µs control loop execution; 13 flag pins drive isolated gate drivers directly. | Use Scenario: Multi-effects guitar pedal with reverb, delay, and distortion algorithms. IC Role / Device Role / Timing Role: Audio signal processor managing stereo I/O, parameter interpolation, and effect chaining. Use Value: Dual SPORTs interface to stereo codec; 16K × 24-bit program RAM stores multiple effect presets; ICE-Port™ enables live tuning during performance. |
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-2189MKST-133 | Higher speed: 133 MHz CPU clock (7.5 ns cycle), 20K × 24-bit program RAM, 20K × 16-bit data RAM | Supports more complex algorithms (e.g., wideband acoustic echo cancellation) requiring >33 MIPS sustained throughput | Select when higher computational headroom and larger on-chip memory are required for future-proofing |
| TMS320VC5402PGE | TI C54x architecture; 100 MIPS @ 10 ns, 32K × 16-bit RAM, McBSP serial ports, different instruction set | Lacks ICE-Port™; requires JTAG-based emulation; broader third-party toolchain support but not code-compatible | Choose for TI ecosystem integration or where C54x-specific libraries (e.g., TI DSPLIB) are mandated |
Compared with ADSP-2186LKST-115, ADSP-2189MKST-133 delivers 4× faster instruction throughput and expanded memory for next-generation algorithms, while TMS320VC5402PGE offers higher peak MIPS and industry-standard McBSP but requires full software porting and lacks integrated ICE-Port™ debug capability.
Availability
ADSP-2186LKST-115 is available at Aetrix Electronics and suitable for voice recording systems, telecom line cards, industrial motor controllers, and audio effects processors requiring stable component supply across extended production lifecycles.
Supply support for ADSP-2186LKST-115 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 DSP technology, headquartered in Norwood, MA, serving industrial, automotive, communications, and consumer markets since 1965.
The ADSP-21xx family was designed specifically for cost-sensitive, real-time embedded DSP applications demanding low power, high MIPS/mm², and seamless debug integration - exemplified by the ADSP-2186LKST-115's ICE-Port™ and power-down features.
FAQ
What is the maximum external memory capacity supported by ADSP-2186LKST-115 in Full Memory Mode?
ADSP-2186LKST-115 supports up to 4 MB of external byte memory via its Byte DMA port and 2048 locations of I/O memory space. In Full Memory Mode, it uses A13:A0 and D23:D0 for addressing and data transfer, enabling direct access to EPROM, Flash, or SRAM for program overlays and data tables without glue logic.
Does ADSP-2186LKST-115 support hardware floating-point arithmetic?
No, ADSP-2186LKST-115 is a fixed-point DSP with 24-bit program word and 16-bit data word architecture. It performs arithmetic using integer representations and supports biased rounding and normalization via its shifter unit, but lacks dedicated floating-point execution units or IEEE-754 compliance.
Can ADSP-2186LKST-115 boot directly from external SPI Flash memory?
No, ADSP-2186LKST-115 does not support native SPI boot. It boots from byte-wide external memory (e.g., EPROM or parallel NOR Flash) mapped to its byte memory space, or via internal DMA port load. SPI interface requires external GPIO bit-banging or an external SPI-to-parallel bridge IC.
How many interrupt sources does ADSP-2186LKST-115 support, and what is the priority order?
ADSP-2186LKST-115 supports 11 interrupt sources: RESET (highest priority), power-down (nonmaskable), IRQ2, IRQL1, IRQL0, SPORT0 transmit/receive, IRQE, BDMA, SPORT1 transmit/receive (or IRQ0/IRQ1), and timer (lowest priority). Priority is fixed in hardware and defined in the ICNTL register; all except RESET and power-down are individually maskable via IMASK.
Is the ADSP-2186LKST-115 pin-compatible with other ADSP-218x series devices?
Yes, ADSP-2186LKST-115 shares the same 100-lead TQFP package and pinout as ADSP-2185, ADSP-2187, and ADSP-2189 within the ADSP-218x family. Functionally identical pins (e.g., SPORT0, CLKIN, RESET, PWD) occupy identical locations, enabling drop-in replacement where speed grade and memory requirements align.
ADSP-2186LKST-115 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:
- 28.8MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 40kB
- 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-2186LKST-115 FAQ
1.How can I place an order for ADSP-2186LKST-115 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2186LKST-115 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-2186LKST-115 reliable?
The price and inventory of ADSP-2186LKST-115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2186LKST-115 is usually 5 days.
3.What payment methods are accepted for ADSP-2186LKST-115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2186LKST-115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2186LKST-115?
ADSP-2186LKST-115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2186LKST-115 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-2186LKST-115?
For technical support, including ADSP-2186LKST-115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2186LKST-115 requirements.
6.How does Aetrix verify that ADSP-2186LKST-115 is sourced from the original manufacturer or authorized distributors?
All ADSP-2186LKST-115 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-2186LKST-115 meets industry standards.
7.What is the process for return or replacement of ADSP-2186LKST-115?
All ADSP-2186LKST-115 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2186LKST-115, 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-2186LKST-115 part is unused and in its original packaging.
Return procedure for ADSP-2186LKST-115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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