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Analog Devices Inc. ADSP-2185LKST-133
- Part No.:
- ADSP-2185LKST-133
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2185LKST-133.pdf
- Description:
- IC DSP CONTROLLER 16BIT 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:611
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Product details
Overview
ADSP-2185LKST-133 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, supports zero-overhead looping, and integrates power-down mode with 100-cycle wake-up-used in real-time audio processing, telecom channel banks, and embedded control systems requiring deterministic low-latency signal flow.
For engineers reviewing the ADSP-2185LKST-133 datasheet, ADSP-2185LKST-133 pinout, ADSP-2185LKST-133 application, or ADSP-2185LKST-133 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 for in-system debug.
Technical Context
The ADSP-2185LKST-133 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-within each instruction cycle.
It features dual double-buffered serial ports with hardware companding (A-law/µ-law per CCITT G.711), programmable 16-bit interval timer with prescaler, 13 programmable flag pins (8 I/O configurable, 3 output-only), and ICE-Port™ interface for non-intrusive in-circuit emulation without target board modification.
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 Program Memory | 16K × 24-bit RAM - stores both instructions and data; allows dual-operand fetch per cycle when used as data memory. |
| On-Chip Data Memory | 16K × 16-bit RAM - supports simultaneous access with program memory via independent address/data buses. |
| Serial Ports | 2 × bidirectional SPORTs - each with independent framing, 3–16-bit word length, hardware companding, and autobuffering for circular buffer transfers. |
| Power-Down Recovery | 100 CLKIN cycles - allows rapid resumption of execution after hardware- or software-initiated low-power state. |
| Package | 100-lead TQFP - surface-mount footprint with multiplexed pins for memory interface, serial I/O, flags, and interrupts. |
| Emulation Interface | 14-pin ICE-Port™ - provides full-speed in-target debugging, breakpoint support, register/memory inspection, and C-source-level trace without removing the device. |
Pinout & Package
ADSP-2185LKST-133 is housed in a 100-lead thin quad flat package (TQFP) with 0.5 mm pitch, thermally enhanced for embedded signal processing applications. Pin functionality is mode-dependent: Full Memory Mode (Mode C = 0) uses A13:0 and D23:0 for external addressing/data; Host Mode (Mode C = 1) configures IAD15:0 as multiplexed address/data bus with dedicated control signals (IWR, IRD, IAL, IS, IACK).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN / XTAL | Clock input pair | Accepts either 16.67 MHz TTL clock (half-instruction rate) or parallel-resonant crystal; determines 30 ns instruction cycle timing. |
| SPORT0 (SCLK0, RFS0, TFS0, DT0, DR0) | Synchronous serial interface | Independent transmit/receive sections with programmable frame sync polarity, pulse width, and internal/external clock sourcing. |
| SPORT1 (SCLK1, RFS1, TFS1, DT1, DR1) | Reconfigurable serial/flag/interrupt interface | Can be software-mapped to IRQ0/IRQ1 inputs and FI/FO signals while retaining serial clock generation capability. |
| PF0–PF7 | Programmable flag I/O | 8 pins configurable as input/output; PF0–PF2 serve dual role as Mode A/B/C select during RESET; PF3–PF7 share interrupt functions (IRQ2, IRQL0/1, IRQE). |
| PWD / PWDACK | Power management control | PWD initiates hardware power-down; PWDACK asserts when processor enters dormant state-enables system-level power sequencing. |
| EZ-Port (9 pins) | ICE-Port™ emulator interface | 14-pin logical interface (mapped across 9 physical pins) enabling non-intrusive debug, memory access, and real-time trace without halting execution. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-overhead looping | Hardware loop counters and stack eliminate branch overhead-critical for tight FIR/IIR filter kernels and FFT butterflies. |
| Dual-operand fetch per cycle | 3-bus architecture allows concurrent instruction fetch, data read from program memory, and data read from data memory-maximizing MAC throughput. |
| Hardware companding | Integrated A-law and µ-law encoding/decoding per CCITT G.711 eliminates need for external codec in voice-grade telecom interfaces. |
| Flexible memory interface modes | Full Memory Mode supports 4 MB byte-wide external memory; Host Mode enables glueless connection to 16-bit peripherals via IDMA port. |
| Low-power operation | Three modes-Power-Down (100-cycle wake), Idle (indefinite wait), Slow Idle (programmable 16×–128× clock scaling)-extend battery life in portable DSP systems. |
Applications
| Voice Channel Processing | Industrial Motor Control |
|---|---|
Use Scenario: Real-time echo cancellation and DTMF detection in VoIP gateways using 8 kHz sampling and 16-bit linear PCM. IC Role / Device Role / Timing Role: Primary signal processor executing adaptive filtering algorithms with deterministic 30 ns instruction latency and dual SPORTs handling simultaneous upstream/downstream streams. Use Value: On-chip 32K words RAM eliminates external SRAM, reducing BOM cost and PCB area; hardware companding cuts codec IC count by one. | Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM motors in HVAC compressors with 20 kHz PWM update rate. IC Role / Device Role / Timing Role: Real-time position/speed estimator and torque regulator running sensor fusion (encoder + current feedback) at 50 µs control loop intervals. Use Value: Dual DAGs enable concurrent access to motor model coefficients (in program RAM) and real-time ADC samples (in data RAM), sustaining 33 MIPS under worst-case load. |
| Medical Ultrasound Beamforming | Test & Measurement Signal Generation |
Use Scenario: Digital beam synthesis and dynamic receive focusing in portable ultrasound scanners using 40 MHz sampling and 12-bit ADC data. IC Role / Device Role / Timing Role: Front-end DSP performing delay-and-sum beamforming across 64 channels with sub-sample interpolation and FIR filtering. Use Value: 100-cycle power-down recovery allows rapid channel activation/deactivation-reducing average power by >40% during idle scan phases. | Use Scenario: Arbitrary waveform generation (AWG) with real-time modulation (AM/FM/PM) and harmonic distortion analysis in benchtop analyzers. IC Role / Device Role / Timing Role: Waveform synthesis engine generating 16-bit, 20 MS/s output via external DAC while simultaneously computing spectral metrics using on-chip FFT routines. Use Value: ICE-Port™ interface enables live parameter tuning and waveform validation without interrupting continuous output-critical for production calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-point DSP microcomputer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-2189MKST-133 | Same 100-lead TQFP package and ADSP-2100 instruction set, but includes enhanced UART emulation via SPORT reconfiguration and extended flag I/O (16 pins vs. 13). | Better suited for systems requiring RS-232 connectivity without external transceivers or additional GPIO for status signaling. | Select ADSP-2189MKST-133 if UART emulation and extra flag pins are required; otherwise ADSP-2185LKST-133 offers identical core DSP performance at lower cost. |
| TMS320C549PGE | 144-pin LQFP, 100 MIPS @ 100 MHz, 32K × 16-bit RAM, but lacks integrated serial port companding and ICE-Port™ interface. | Higher raw throughput for computationally intensive FFTs, but requires external codec for voice and custom JTAG emulator for debug. | Choose TMS320C549PGE only when >33 MIPS is mandatory and external component count is acceptable; ADSP-2185LKST-133 delivers better integration for voice/audio edge nodes. |
Compared with ADSP-2185LKST-133, ADSP-2189MKST-133 adds UART emulation and flag I/O at no clock or memory penalty, while TMS320C549PGE trades integration for raw speed-making ADSP-2185LKST-133 optimal for cost-sensitive, low-power, voice-centric embedded DSP where glueless design and debug simplicity are prioritized.
Availability
ADSP-2185LKST-133 is available at Aetrix Electronics and suitable for voice channel processing, industrial motor control, medical ultrasound beamforming, and test & measurement signal generation requiring stable component supply across long-lifecycle embedded programs.
Supply support for ADSP-2185LKST-133 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial systems.
The ADSP-21xx family-including ADSP-2185LKST-133-is designed for real-time embedded signal processing applications demanding deterministic latency, on-chip memory integration, and low-power operation in space-constrained environments.
FAQ
What clock source options does the ADSP-2185LKST-133 support?
The ADSP-2185LKST-133 accepts either a 16.67 MHz TTL-compatible clock signal applied to CLKIN (with XTAL left unconnected), or a parallel-resonant fundamental-mode crystal connected across CLKIN and XTAL pins. The internal oscillator circuit automatically stabilizes the crystal; capacitor values must follow the crystal manufacturer's specification. Both configurations yield a 30 ns instruction cycle time and 33 MIPS performance.
Does the ADSP-2185LKST-133 support external memory expansion, and what modes are available?
Yes, the ADSP-2185LKST-133 supports external memory expansion in two mutually exclusive modes selected at RESET via the Mode C pin: Full Memory Mode (Mode C = 0) provides 14-bit address (A13:0) and 24-bit data (D23:0) buses for up to 4 MB byte-wide memory; Host Mode (Mode C = 1) configures a 16-bit multiplexed IDMA port (IAD15:0) with dedicated control lines (IWR, IRD, IAL, IS, IACK) for direct connection to 16-bit peripherals.
How many interrupts does the ADSP-2185LKST-133 support, and what types are configurable?
The ADSP-2185LKST-133 supports eleven total interrupts: six external (IRQ2, IRQL0, IRQL1, IRQE, plus IRQ0/IRQ1 via SPORT1 reconfiguration) and five internal (timer, SPORT0/1 transmit/receive, BDMA, power-down). IRQ2, IRQ0, and IRQ1 can be programmed as edge- or level-sensitive via ICNTL register; IRQL0/IRQL1 are level-sensitive; IRQE is edge-sensitive and forceable/clearable via IFC register. Power-down interrupt is nonmaskable.
What is the function of the EZ-Port on the ADSP-2185LKST-133, and how is it used?
The EZ-Port on the ADSP-2185LKST-133 implements the ICE-Port™ interface-a 14-signal logical debug interface mapped across nine physical pins. It enables full-speed in-circuit emulation including breakpoint setting, register/memory read/write, instruction-level trace, and C-source debugging without removing the ADSP-2185LKST-133 from the target board or halting real-time operation. No adapter or socket replacement is required.
Can the ADSP-2185LKST-133 execute bit manipulation instructions, and which ones are supported?
Yes, the ADSP-2185LKST-133 extends the base ADSP-2100 instruction set with dedicated bit manipulation operations: BIT SET, BIT CLEAR, BIT TOGGLE, and BIT TEST. These operate on any memory or register location using direct, indirect, or immediate addressing modes. They enable efficient peripheral register control, protocol bit-field handling, and status flag management without multi-instruction sequences or ALU masking overhead.
ADSP-2185LKST-133 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:
- 33.3MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 80kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 3.30V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP (14x14)
ADSP-2185LKST-133 FAQ
1.How can I place an order for ADSP-2185LKST-133 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2185LKST-133 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-2185LKST-133 reliable?
The price and inventory of ADSP-2185LKST-133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2185LKST-133 is usually 5 days.
3.What payment methods are accepted for ADSP-2185LKST-133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2185LKST-133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2185LKST-133?
ADSP-2185LKST-133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2185LKST-133 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-2185LKST-133?
For technical support, including ADSP-2185LKST-133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2185LKST-133 requirements.
6.How does Aetrix verify that ADSP-2185LKST-133 is sourced from the original manufacturer or authorized distributors?
All ADSP-2185LKST-133 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-2185LKST-133 meets industry standards.
7.What is the process for return or replacement of ADSP-2185LKST-133?
All ADSP-2185LKST-133 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2185LKST-133, 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-2185LKST-133 part is unused and in its original packaging.
Return procedure for ADSP-2185LKST-133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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