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Analog Devices Inc. ADSP-2185MBCA-266
- Part No.:
- ADSP-2185MBCA-266
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 144-LFBGA
- Datasheet:
-
ADSP-2185MBCA-266.pdf
- Description:
- IC DSP CONTROLLER 16BIT 144MBGA
- Quantity:
- Payment:
- Shipping:
Inventory:344
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Product details
Overview
ADSP-2185MBCA-266 from Analog Devices is a 24-bit fixed-point DSP microcomputer optimized for real-time signal processing in embedded audio, telecom, and industrial control systems. It delivers 75 MIPS sustained performance at 13.3 ns instruction cycle time, integrates 16K × 24-bit program RAM and 16K × 16-bit data RAM, and features dual synchronous serial ports (SPORT0/SPORT1), a 16-bit internal DMA port, and programmable 16-bit interval timer.
For engineers reviewing the ADSP-2185MBCA-266 datasheet, ADSP-2185MBCA-266 pinout, ADSP-2185MBCA-266 application, or ADSP-2185MBCA-266 equivalent, key selection considerations include its 100-lead LQFP package, 2.5 V core/2.5–3.3 V I/O voltage flexibility, zero-overhead looping architecture, and ICE-Port™ debug interface support for in-system emulation without board removal.
Technical Context
The ADSP-2185MBCA-266 implements the ADSP-2100 base architecture with three independent computational units-ALU, MAC (40-bit accumulator), and barrel shifter-enabling simultaneous dual operand fetches via 3-bus architecture. Its program sequencer supports conditional jumps and subroutine calls in one cycle, with zero-overhead looping using internal loop counters and stacks.
It supports two operating modes: Full Memory Mode (Mode C = 0) with 14-bit address bus (A13:A0) and 24-bit data bus (D23:D0), and Host Mode (Mode C = 1) with 16-bit multiplexed IDMA address/data bus (IAD15:IAD0) plus dedicated control signals (IWR, IRD, IAL, IS, IACK). Pin functionality is mode-determined at RESET and fixed thereafter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | ADSP-2100 family 24-bit fixed-point DSP with ALU, MAC, and shifter computational units |
| Performance | 75 MIPS sustained; 13.3 ns instruction cycle time @ 2.5 V core supply |
| On-Chip Memory | 16K × 24-bit program RAM + 16K × 16-bit data RAM - enables full algorithm execution without external code fetch |
| Serial Interfaces | Dual SPORTs supporting 3–16-bit word lengths, A-law/µ-law companding, and frameless/framed operation - suitable for voice codec interfacing |
| Timer | 16-bit programmable interval timer with 8-bit prescaler (TSCALE) and reloadable period register (TPERIOD) - generates precise periodic interrupts for sampling or scheduling |
| Power Management | Power-down mode with 200 CLKIN-cycle wake-up; idle/slow-idle modes reduce dynamic power during latency-tolerant operations |
| Debug Interface | 14-pin ICE-Port™ supporting in-target operation, up to 20 breakpoints, and C source-level debugging - eliminates need for socketed emulators or board modifications |
Pinout & Package
The ADSP-2185MBCA-266 is packaged in a 100-lead LQFP (ST-100) with 0.5 mm pitch, thermally enhanced for industrial ambient operation. Pin assignments are mode-dependent: Full Memory Mode uses A13:A0 and D23:D0 for external memory expansion; Host Mode repurposes pins for 16-bit IDMA bus (IAD15:IAD0) and control signals (IWR, IRD, IAL, IS, IACK).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Asynchronous processor reset input | Active-low signal initializing all registers, disabling peripherals, and forcing boot sequence - must be held low ≥ 100 ns after power stabilization |
| CLKIN / XTAL | System clock source input | Accepts 25–50 MHz crystal or CMOS clock; drives internal PLL to generate core timing - determines maximum instruction throughput and serial port baud rates |
| A13:A0 (Mode C = 0) | External memory address bus | Drives 16 MB address space for program/data/byte/I/O memory mapping - enables "glueless" interface to EPROM, SRAM, or peripheral ASICs |
| D23:D0 (Mode C = 0) | External memory data bus | 24-bit bidirectional bus supporting byte-wide (D7:D0), word-wide (D15:D0), or full-word transfers - upper 8 bits (D23:D16) serve as byte memory address extension |
| IAD15:IAD0 (Mode C = 1) | IDMA address/data multiplexed bus | 16-bit time-multiplexed bus for high-speed access to on-chip RAM - allows host processor to load firmware or exchange buffers without halting DSP execution |
| SPORT0 / SPORT1 | Synchronous serial I/O pairs | Each includes SCLK, RFS, TFS, DRx, DTx - supports full-duplex audio streaming, TDM, or multiprocessor communication with hardware companding |
| PF0–PF7 | Programmable flag I/O | 13 total flags (8 software-configurable I/O, 3 output-only); used for handshaking, status signaling, or GPIO expansion - retain function concurrently with interrupt capability on shared pins |
Key Features
| Feature | Design Value |
|---|---|
| Three-bus Harvard architecture | Enables concurrent instruction fetch, dual operand access, and result write-back - eliminates pipeline stalls during multiply-accumulate loops |
| Zero-overhead looping | Hardware loop counters and stack eliminate branch instructions in repetitive code - critical for FIR/IIR filter kernels and FFT butterflies |
| Byte DMA controller (BDMA) | Directly addresses up to 4 MB of external byte memory for program overlays or lookup tables - avoids CPU intervention during background data movement |
| ICE-Port™ emulator interface | 14-pin dedicated debug port enabling non-intrusive real-time tracing, register inspection, and breakpoint insertion - supports final-system validation without hardware redesign |
| Flexible I/O voltage tolerance | All inputs tolerate up to 3.6 V regardless of VDDEXT setting (2.5 V or 3.3 V) - simplifies mixed-voltage system integration with legacy peripherals |
Applications
| Voice Communications System | Digital Audio Processing |
|---|---|
Use Scenario: Real-time echo cancellation and noise suppression in VoIP gateways or IP phones. IC Role / Device Role / Timing Role: Primary signal processor executing adaptive filtering algorithms with deterministic 13.3 ns instruction latency. Use Value: On-chip 16K × 24-bit program RAM stores filter coefficients and state variables; dual SPORTs interface directly to analog front-end codecs (e.g., AD73322) without glue logic. |
Use Scenario: Multi-channel audio effects processing in professional mixing consoles or studio interfaces. IC Role / Device Role / Timing Role: Dedicated audio DSP handling sample-rate conversion, equalization, and dynamics processing with sub-microsecond jitter control. Use Value: 75 MIPS throughput supports 24-bit precision across 8+ channels; hardware companding reduces bandwidth for telephony-grade voice paths. |
| Industrial Motor Control | Test & Measurement Instrumentation |
Use Scenario: Closed-loop field-oriented control (FOC) of PMSM/BLDC motors in servo drives. IC Role / Device Role / Timing Role: Real-time computation engine performing Clarke/Park transforms, PI current regulation, and SVM generation within 10 µs control cycles. Use Value: Dual DAGs enable simultaneous access to current sensor samples and PWM timing registers; programmable timer triggers ADC conversions synchronized to PWM edges. |
Use Scenario: Portable spectrum analyzers requiring fast Fourier transform (FFT) computation and real-time display rendering. IC Role / Device Role / Timing Role: High-speed numeric coprocessor accelerating 1024-point FFTs and digital down-conversion (DDC) stages. Use Value: 40-bit MAC accumulator prevents overflow in multi-stage filtering; internal DMA port allows host MCU to stream captured samples while DSP executes analysis kernels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DSP microcomputer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-2189MBCA-75 | Higher clock speed (75 MHz vs. 50 MHz), same 100-lead LQFP package and ADSP-2100 instruction set compatibility | Delivers 112.5 MIPS - better suited for computationally intensive FFTs or multi-band audio codecs where latency budget permits higher power draw | Select when raw throughput outweighs power constraints; requires verified thermal design due to increased IDD |
| TMS320VC5402PGE100 | TI C54x 16-bit fixed-point DSP; different instruction set, 144-pin LQFP, no integrated ICE-Port | Lacks on-chip ICE-Port and dual SPORTs with companding - demands external JTAG emulator and additional codec interface logic | Choose only if existing C54x toolchain and codebase justify migration cost; not drop-in compatible |
Compared with ADSP-2185MBCA-266, ADSP-2189MBCA-75 offers higher throughput in identical packaging but increases power consumption, while TMS320VC5402PGE100 requires full toolchain and hardware redesign due to architectural divergence and absence of integrated debug infrastructure.
Availability
ADSP-2185MBCA-266 is available at Aetrix Electronics and suitable for voice communications systems, industrial motor controllers, digital audio equipment, and test & measurement instrumentation requiring stable component supply over extended production lifecycles.
Supply support for ADSP-2185MBCA-266 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 DSP technology, serving industrial, automotive, communications, and consumer markets with precision signal processing solutions.
The ADSP-2185MBCA-266 belongs to the ADSP-2100 family of single-chip DSP microcomputers designed for real-time embedded signal processing where deterministic latency, on-chip memory integration, and debug accessibility are critical.
FAQ
What is the maximum operating frequency supported by ADSP-2185MBCA-266?
The ADSP-2185MBCA-266 operates at a 50 MHz input clock (CLKIN), yielding a 13.3 ns instruction cycle time and 75 MIPS sustained performance. This frequency is specified under recommended operating conditions (VDDINT = 2.5 V ± 0.2 V, TA = –40°C to +85°C). Exceeding 50 MHz violates timing specifications and may cause instruction corruption or undefined behavior in the ADSP-2185MBCA-266.
Does ADSP-2185MBCA-266 support booting from external memory?
Yes, the ADSP-2185MBCA-266 supports automatic booting from byte-wide external memory (e.g., EPROM or Flash) via its Byte DMA port (BDMA) or from external memory through the Internal DMA port (IDMA) in Host Mode. Boot configuration is controlled by MODE pins during RESET, and the device loads program code into on-chip program RAM before execution begins - a core capability of the ADSP-2185MBCA-266.
How many serial ports does ADSP-2185MBCA-266 include, and what protocols do they support?
The ADSP-2185MBCA-266 integrates two fully independent synchronous serial ports (SPORT0 and SPORT1), each supporting framed and frameless operation, 3–16-bit word lengths, and hardware A-law/µ-law companding per CCITT G.711. They interface directly with audio codecs, TDM buses, or other DSPs without external framing logic - a defining feature of the ADSP-2185MBCA-266's signal processing architecture.
Can ADSP-2185MBCA-266 operate with mixed voltage supplies?
Yes, the ADSP-2185MBCA-266 separates core and I/O power domains: VDDINT = 2.5 V ± 0.2 V powers the internal logic, while VDDEXT supports either 2.5 V or 3.3 V for I/O buffers. All digital inputs tolerate up to 3.6 V regardless of VDDEXT setting, enabling robust interfacing with 3.3 V peripherals without level shifters - a key design advantage of the ADSP-2185MBCA-266.
Is ICE-Port™ debugging supported on ADSP-2185MBCA-266 without hardware modification?
Yes, the ADSP-2185MBCA-266 integrates on-chip ICE-Port™ emulation support with a dedicated 14-pin interface. This allows full in-circuit debugging - including breakpoints, register inspection, and C source-level tracing - without removing the ADSP-2185MBCA-266 from the target board or adding adapters. The small connector footprint enables ICE-Port™ integration even in final production designs.
ADSP-2185MBCA-266 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADSP-21xx
- Package/Case:
- 144-LFBGA
- Packaging:
- Bag
- Product Status:
- Obsolete
- Type:
- Fixed Point
- Interface:
- Host Interface, Serial Port
- Clock Rate:
- 66MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 80kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 2.50V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-MiniBGA (10x10)
ADSP-2185MBCA-266 FAQ
1.How can I place an order for ADSP-2185MBCA-266 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2185MBCA-266 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-2185MBCA-266 reliable?
The price and inventory of ADSP-2185MBCA-266 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2185MBCA-266 is usually 5 days.
3.What payment methods are accepted for ADSP-2185MBCA-266?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2185MBCA-266 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2185MBCA-266?
ADSP-2185MBCA-266 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2185MBCA-266 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-2185MBCA-266?
For technical support, including ADSP-2185MBCA-266 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2185MBCA-266 requirements.
6.How does Aetrix verify that ADSP-2185MBCA-266 is sourced from the original manufacturer or authorized distributors?
All ADSP-2185MBCA-266 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-2185MBCA-266 meets industry standards.
7.What is the process for return or replacement of ADSP-2185MBCA-266?
All ADSP-2185MBCA-266 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2185MBCA-266, 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-2185MBCA-266 part is unused and in its original packaging.
Return procedure for ADSP-2185MBCA-266:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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