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Analog Devices Inc. ADSP-2186BSTZ-115
- Part No.:
- ADSP-2186BSTZ-115
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2186BSTZ-115.pdf
- Description:
- IC DSP CONTROLLER 16BIT 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:296
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Product details
Overview
ADSP-2186BSTZ-115 from Analog Devices is a 40 MIPS fixed-point DSP microcomputer with 8K × 24-bit on-chip program RAM, 8K × 16-bit on-chip data RAM, dual synchronous serial ports (SPORT0/SPORT1), and 100-lead LQFP packaging. It executes instructions in 25 ns cycles, supports zero-overhead looping, and integrates power-down control for portable audio and telecom terminal applications.
For engineers reviewing the ADSP-2186BSTZ-115 datasheet, ADSP-2186BSTZ-115 pinout, ADSP-2186BSTZ-115 application, or ADSP-2186BSTZ-115 equivalent, key selection criteria include instruction cycle time, on-chip memory configuration, serial port framing flexibility, interrupt priority handling, and low-power mode recovery timing.
Technical Context
The ADSP-2186BSTZ-115 implements the ADSP-2100 base architecture with three independent computational units (ALU, MAC, shifter), two 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 from program and data memory per instruction.
It features two double-buffered serial ports with hardware A-law/µ-law companding, programmable 16-bit interval timer with TSCALE prescaler, and flexible memory interface supporting Full Memory Mode (14-bit address, 24-bit data) or Host Mode (16-bit IDMA bus). Power-down entry is triggered via PWD pin or software bit, with 100-cycle recovery guarantee.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Instruction Cycle Time | 25 ns - Enables 40 MIPS sustained throughput with single-cycle execution of all instructions including MAC and ALU operations. |
| On-Chip Program Memory | 8K × 24-bit RAM - Stores both instructions and data; allows dual-operand fetch (one from PM, one from DM) per cycle. |
| On-Chip Data Memory | 8K × 16-bit RAM - Supports circular buffering with automatic modulo addressing via DAGs for FFT and filter kernels. |
| Serial Ports | 2 × SPORT (SPORT0/SPORT1) - Each supports frame sync, 3–16-bit word length, hardware companding, and independent TX/RX interrupts. |
| Power-Down Recovery | ≤100 CLKIN cycles - Guarantees deterministic wake-up latency critical for real-time voice packet processing. |
| Timer Resolution | Programmable 16-bit TCOUNT with 8-bit TSCALE - Generates precise periodic interrupts for sample-rate timing in audio codecs. |
| Interrupt Sources | 11 total (6 external + 5 internal) - Includes IRQ2/IRQL0/IRQL1/IRQE/IRQ0/IRQ1, SPORT TX/RX, BDMA, timer, and nonmaskable power-down. |
Pinout & Package
The ADSP-2186BSTZ-115 is packaged in a 100-lead LQFP (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin functionality includes multiplexed serial port, flag, interrupt, and memory interface signals; configuration is determined at RESET (Mode C) or via software (SPORT pins).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Processor Reset Input | Active-low asynchronous reset initiating full register initialization and mode selection sampling. |
| CLKIN / XTAL | Clock Source Input | Accepts 40 MHz crystal or TTL/CMOS clock; determines 25 ns instruction cycle timing. |
| SPORT0 (SCLK0, RFS0, DR0, TFS0, DT0) | Synchronous Serial Port 0 I/O | Configurable for framed/frameless operation; supports TDM up to 24/32-word streams on SPORT0. |
| SPORT1 (SCLK1, RFS1/IRQ0, DR1/FI, TFS1/IRQ1, DT1/FO) | Synchronous Serial Port 1 I/O | Reconfigurable as dual interrupt inputs (IRQ0/IRQ1) and flag I/O (FI/FO) while retaining clock generation. |
| PF0–PF7 | Programmable Flag I/O | 13 total flags: 8 software-configurable I/O, 3 dedicated outputs (FL0–FL2); concurrent interrupt/flag use enabled. |
| PWD / PWDACK | Power-Down Control | PWD input initiates hardware power-down; PWDACK output confirms entry into low-power state. |
| A13:A0 / D23:D0 | External Memory Interface | In Full Memory Mode: 14-bit address + 24-bit bidirectional data bus for 4 MB byte memory expansion. |
| IAD15:IAD0 / IWR / IRD | IDMA Port Signals | In Host Mode: 16-bit multiplexed address/data bus with separate read/write controls for glueless peripheral interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-Overhead Looping | Hardware loop counters and stack eliminate branch overhead, enabling deterministic execution of FIR filters and FFT butterflies. |
| Dual Operand Fetch per Cycle | 3-bus architecture (PMA/PMD/DMA/DMD/R) allows simultaneous instruction fetch, data load, and result write without pipeline stalls. |
| Hardware Companding | Integrated A-law and µ-law encoding/decoding in SPORTs meets G.711 requirements for PSTN voice codec interfaces. |
| ICE-Port Emulation Interface | 14-pin EZ-ICE-compatible debug port enables in-circuit debugging without target board modification or device removal. |
| Flexible Low-Power Modes | Three modes-Power-Down (100-cycle wake), Idle (interrupt-wakeup), Slow Idle (16×/32×/64×/128× clock divisor)-optimize battery life in portable terminals. |
Applications
| Voice Terminal System | Digital Audio Processing |
|---|---|
Use Scenario: Real-time echo cancellation and DTMF detection in VoIP desk phones using on-chip memory for coefficient storage. IC Role / Device Role / Timing Role: Primary DSP executing adaptive algorithms with SPORT0 handling PCM audio stream and SPORT1 managing signaling channel. Use Value: 25 ns cycle time ensures sub-100 µs latency for acoustic echo cancellation; 8K × 24-bit program RAM stores multiple filter banks without external memory access. | Use Scenario: Embedded MP3 decoder in portable media player with stereo DAC interface and SD card buffer management. IC Role / Device Role / Timing Role: Fixed-point decode engine performing Huffman decoding, inverse quantization, and synthesis filterbank using dual DAGs for circular buffer addressing. Use Value: Dual SPORTs support simultaneous I²S DAC output and SPI SD card interface; 8K × 16-bit data RAM holds 2048-sample audio buffers for glitch-free playback. |
| Industrial Sensor Signal Conditioning | Telecom Line Card Baseband Processing |
Use Scenario: High-precision vibration analysis in predictive maintenance systems using multi-channel ADC data acquisition. IC Role / Device Role / Timing Role: Real-time FFT processor receiving 16-bit sensor samples via SPORT0, applying windowing and spectral analysis, and transmitting results over SPORT1. Use Value: 40 MIPS performance handles 4096-point FFT in <5 ms; programmable timer triggers synchronized ADC sampling at exact intervals. | Use Scenario: Channelized T1/E1 framer in remote access server with HDLC protocol handling and CRC generation. IC Role / Device Role / Timing Role: Baseband controller managing time-slot assignment, bit stuffing, and alarm indication signal (AIS) generation across multiple E1 lines. Use Value: SPORT0 configured for multichannel TDM with 32-word frame sync; 13 programmable flags drive LED status indicators and relay controls without GPIO expansion. |
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-2187MSTZ-120 | Higher speed grade (120 MHz core, 20 ns cycle), 144-ball Mini-BGA package, identical instruction set and memory map. | Requires PCB redesign for BGA layout and thermal management; suited for higher-throughput audio analytics where 120 MHz timing margin is needed. | Select when >40 MIPS sustained performance is required and BGA assembly capability exists. |
| TMS320C549PGE | TI C54x architecture; 100 MIPS @ 100 MHz, 16K × 16-bit RAM, different instruction set, no native companding hardware. | Lacks integrated A-law/µ-law; requires software implementation increasing CPU load; broader third-party toolchain support but not code-compatible. | Choose for legacy C54x ecosystem integration or when higher raw MIPS outweighs hardware companding requirement. |
Compared with ADSP-2186BSTZ-115, ADSP-2187MSTZ-120 delivers 20% higher clock rate in a physically incompatible package, while TMS320C549PGE offers greater peak MIPS but demands software-based signal conditioning and lacks direct pin or code compatibility.
Availability
ADSP-2186BSTZ-115 is available at Aetrix Electronics and suitable for voice terminal systems, digital audio processing platforms, industrial sensor signal conditioning modules, and telecom line card baseband processing requiring stable component supply and long-term industrial lifecycle support.
Supply support for ADSP-2186BSTZ-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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.
The ADSP-2186BSTZ-115 belongs to the ADSP-2100 family of fixed-point DSP microcomputers designed for real-time embedded signal processing in cost-sensitive, power-constrained voice, audio, and telemetry systems.
FAQ
What is the maximum operating frequency supported by the ADSP-2186BSTZ-115?
The ADSP-2186BSTZ-115 operates with a 25 ns instruction cycle time, corresponding to a maximum clock frequency of 40 MHz. This timing is guaranteed across commercial temperature range (0°C to +70°C) and specified under standard VDD conditions. The device achieves sustained 40 MIPS performance due to single-cycle instruction execution and parallel computational unit operation. Clock source may be a 40 MHz crystal or external TTL/CMOS signal applied to CLKIN.
Does the ADSP-2186BSTZ-115 support hardware-based A-law and µ-law companding?
Yes, the ADSP-2186BSTZ-115 integrates dedicated hardware companding logic within both SPORT0 and SPORT1, compliant with CCITT G.711. This enables real-time encoding and decoding of 8-bit compressed audio samples without consuming ALU or MAC resources. Companding is configurable per serial port via control registers and operates independently of data word length (3–16 bits), making it suitable for PSTN gateway and VoIP terminal designs.
How many external interrupt sources does the ADSP-2186BSTZ-115 support, and what types are available?
The ADSP-2186BSTZ-115 supports six external interrupt sources: IRQ2 (edge- or level-sensitive), IRQL0 and IRQL1 (level-sensitive), IRQE (edge-sensitive), and IRQ0/IRQ1 (reconfigurable via SPORT1). All six can be individually masked in IMASK register, and priorities are fixed per Table I in the datasheet (Reset = highest, Timer = lowest). Interrupt vector addresses are hardwired, enabling deterministic response timing critical for real-time audio frame synchronization.
Can the ADSP-2186BSTZ-115 boot directly from external byte-wide memory?
Yes, the ADSP-2186BSTZ-115 supports automatic booting from external byte-wide memory (e.g., EPROM or Flash) through its Byte DMA port. During reset, the processor loads the first 8K words of program memory from external byte space starting at address 0x000000. Boot mode is selected automatically based on memory interface configuration; no external boot ROM controller or glue logic is required, enabling "glueless" system design for cost-sensitive voice terminals.
What low-power modes are implemented in the ADSP-2186BSTZ-115, and how do they differ?
The ADSP-2186BSTZ-115 implements three distinct low-power modes: Power-Down (hardware/software initiated, ~1 µA standby, 100-cycle wake), Idle (CPU halted, peripherals active, interrupt-wakeup), and Slow Idle (clock divisor 16/32/64/128 applied to internal clocks). Unlike Idle, Slow Idle reduces SCLK, CLKOUT, and timer clock rates proportionally, extending battery life in portable audio recorders while maintaining real-time responsiveness within defined latency bounds.
ADSP-2186BSTZ-115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADSP-21xx
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- 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:
- 5.00V
- Voltage - Core:
- 5.00V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP (14x14)
ADSP-2186BSTZ-115 FAQ
1.How can I place an order for ADSP-2186BSTZ-115 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2186BSTZ-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-2186BSTZ-115 reliable?
The price and inventory of ADSP-2186BSTZ-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-2186BSTZ-115 is usually 5 days.
3.What payment methods are accepted for ADSP-2186BSTZ-115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2186BSTZ-115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2186BSTZ-115?
ADSP-2186BSTZ-115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2186BSTZ-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-2186BSTZ-115?
For technical support, including ADSP-2186BSTZ-115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2186BSTZ-115 requirements.
6.How does Aetrix verify that ADSP-2186BSTZ-115 is sourced from the original manufacturer or authorized distributors?
All ADSP-2186BSTZ-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-2186BSTZ-115 meets industry standards.
7.What is the process for return or replacement of ADSP-2186BSTZ-115?
All ADSP-2186BSTZ-115 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2186BSTZ-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-2186BSTZ-115 part is unused and in its original packaging.
Return procedure for ADSP-2186BSTZ-115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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