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Analog Devices Inc. ADSP-2185LBSTZ-210
- Part No.:
- ADSP-2185LBSTZ-210
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2185LBSTZ-210.pdf
- Description:
- IC DSP CONTROLLER 16BIT 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADSP-2185LBSTZ-210 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 5-pin synchronous serial ports (SPORT0/SPORT1). It executes all instructions in a single 30 ns cycle and supports zero-overhead looping, power-down mode with 100-cycle recovery, and ICE-Port™ emulation. It targets real-time audio processing, telecom channel banks, and embedded control systems requiring deterministic low-latency computation.
For engineers reviewing the ADSP-2185LBSTZ-210 datasheet, ADSP-2185LBSTZ-210 pinout, ADSP-2185LBSTZ-210 application, or ADSP-2185LBSTZ-210 equivalent, key selection considerations include its 100-lead TQFP package, 30 ns instruction cycle time, dual SPORTs with hardware companding, 16-bit internal DMA port, and support for byte-wide external memory up to 4 MByte.
Technical Context
The ADSP-2185LBSTZ-210 implements the ADSP-2100 family base architecture with three independent computational units (ALU, MAC, shifter), two data address generators (DAG1/DAG2), and a zero-overhead program sequencer. Its 3-bus architecture enables simultaneous dual operand fetches - one from program memory and one from data memory - in every instruction cycle.
It integrates dedicated hardware for A-law/µ-law companding per CCITT G.711, programmable 16-bit interval timer with prescaler, and flexible interrupt handling supporting six external interrupts (including IRQ0–IRQ2, IRQL0/IRQL1, IRQE) and five internal sources. Memory interface modes include Full Memory Mode (14-bit address bus, 24-bit data bus) and Host Mode (16-bit multiplexed IDMA bus).
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 and booting from external EPROM via byte DMA. |
| On-Chip Data Memory | 16K × 16-bit RAM - supports circular buffering, modulo addressing, and concurrent access with program memory via separate buses. |
| Serial Ports | Two double-buffered SPORTs - each supports 3–16-bit word length, frame sync, internal/external clock, and optional A-law/µ-law companding per G.711. |
| Power-Down Recovery | 100 CLKIN cycles - hardware- or software-initiated dormant state with nonmaskable power-down interrupt and context save/restore control. |
| Package | 100-lead TQFP (14 mm × 14 mm) - surface-mount compatible with standard reflow profiles; pin-compatible with other ADSP-218x variants in same package family. |
| Operating Voltage | 5 V ± 10% - CMOS process optimized for industrial temperature range (–40°C to +85°C) as specified for LBSTZ grade. |
Pinout & Package
ADSP-2185LBSTZ-210 is housed in a 100-lead thin quad flat pack (TQFP) with 0.5 mm lead pitch, compliant with JEDEC MO-153. Pin functions are mode-dependent: Full Memory Mode uses A13:A0 and D23:D0 for external addressing/data; Host Mode repurposes pins as IAD15:IAD0, IWR, IRD, IAL, IS, and IACK for IDMA operation. Multiplexed pins (e.g., IRQ0/SPORT1_TFS, IRQ1/SPORT1_RFS, FI/SPORT1_DR, FO/SPORT1_DT) retain concurrent interrupt and serial functionality under software control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Asynchronous processor reset input | Active-low signal that initializes all registers, clears stacks, and forces entry into boot sequence; sampled synchronously with CLKIN. |
| CLKIN / XTAL | System clock input or crystal oscillator terminal | Accepts either 16.67 MHz TTL clock (half-instruction rate) or parallel-resonant crystal; XTAL must be left floating when external clock is used. |
| SPORT0 (DT0, DR0, TFS0, RFS0, SCLK0) | Synchronous serial port 0 interface | Full-duplex 5-pin interface supporting framed/frameless operation, hardware companding, and autobuffered circular transfers without CPU overhead. |
| SPORT1 (DT1, DR1, TFS1, RFS1, SCLK1) | Synchronous serial port 1 interface | Configurable as serial port or dual external interrupt (IRQ0/IRQ1) plus flag I/O (FI/FO); retains serial clock generation capability even in IRQ mode. |
| PWD / PWDACK | Power-down control pair | PWD initiates hardware power-down; PWDACK asserts when processor enters low-power state - used for system-level power sequencing coordination. |
| FL0–FL2 | Dedicated output flags | Three unidirectional status outputs for real-time signaling (e.g., frame sync assertion, buffer full, interrupt pending) without consuming programmable flag resources. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-overhead looping | Hardware loop counters and stack eliminate branch penalties - critical for FIR/IIR filter kernels and FFT butterflies requiring tight timing predictability. |
| ICE-Port™ emulation interface | 14-pin dedicated debug port enabling in-circuit emulation without socket removal - supports breakpoints, register/memory inspection, and C-source debugging in final target hardware. |
| Dual DMA interfaces | Separate 16-bit internal DMA (IDMA) and 8-bit byte DMA (BDMA) ports allow concurrent high-speed on-chip memory access and off-chip overlay storage without bus contention. |
| Programmable memory strobes | Configurable wait-state generation per memory space (program/data/byte/I/O) - enables "glueless" interfacing with slow peripherals like EPROMs, LCD controllers, or legacy ASICs. |
| Bit manipulation instructions | Native bit set/clear/toggle/test opcodes - accelerate protocol stack bit-field parsing (e.g., HDLC, V.34), GPIO control, and status register management without software bit-banging. |
Applications
| Voice Channel Processing | Industrial Motor Control |
|---|---|
Use Scenario: Real-time echo cancellation and DTMF detection in multi-channel VoIP gateways using G.711-compliant audio streams. IC Role / Device Role / Timing Role: Primary DSP executing adaptive filtering algorithms with deterministic 30 ns instruction latency and dual SPORTs synchronized to TDM frames. Use Value: Hardware companding reduces external codec complexity; 16K × 24-bit program RAM stores multiple filter coefficients; power-down mode extends battery life in portable gateways. | Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM motors in CNC spindles with <10 µs current loop update time. IC Role / Device Role / Timing Role: Real-time motor control co-processor handling PWM generation, Clarke/Park transforms, and PID regulation - coordinated via SPORT0 with host MCU. Use Value: Dual DAGs enable simultaneous sampling of three current sensors and updating of six PWM compare registers; 100-cycle power-down recovery allows rapid response to fault conditions. |
| Medical Ultrasound Beamforming | Secure Communications Modem |
Use Scenario: Digital beam synthesis and dynamic focusing in portable ultrasound systems using 64-channel ADC data. IC Role / Device Role / Timing Role: High-throughput data coprocessor performing delay-and-sum operations on 16-bit samples streamed via BDMA from external FIFOs. Use Value: 24-bit program memory accommodates large lookup tables for time-of-flight compensation; shifter unit accelerates normalization in log-compressed envelope detection. | Use Scenario: Encryption/decryption acceleration and V.34 modem symbol processing in secure satellite terminals. IC Role / Device Role / Timing Role: Dedicated cryptographic engine executing RSA modular exponentiation and QAM demodulation kernels with guaranteed interrupt latency for symbol timing recovery. Use Value: MAC unit performs 40-bit accumulation for error-correction decoding; programmable timer generates precise symbol clocks; FL0–FL2 signal handshake with external crypto ASIC. |
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-2189MKSTZ-210 | Same 100-lead TQFP package, identical pinout, but includes enhanced instruction set extensions (e.g., conditional execution, extended addressing modes) and higher-grade screening (M grade). | Targeted at military/aerospace applications requiring extended temperature range (–55°C to +125°C) and radiation-tolerant qualification. | Select ADSP-2189MKSTZ-210 only if extended environmental specs or additional instructions (e.g., conditional ALU ops) are required; otherwise ADSP-2185LBSTZ-210 offers cost-optimized performance for commercial/industrial use. |
| TMS320C549PGE | 144-pin LQFP, 100 MIPS @ 100 MHz, 32K × 16-bit RAM, but lacks integrated companding hardware and ICE-Port™; requires external JTAG emulator. | Higher raw throughput suited for wideband audio codecs or multi-carrier DSL PHY layers where G.711 companding is handled externally. | Choose TMS320C549PGE when >33 MIPS is mandatory and system design can accommodate larger footprint, external debug interface, and added peripheral ICs for companding. |
Compared with ADSP-2185LBSTZ-210, ADSP-2189MKSTZ-210 delivers identical real-time performance with enhanced reliability for harsh environments, while TMS320C549PGE trades integrated peripherals and compact packaging for higher clock speed and memory - making ADSP-2185LBSTZ-210 optimal for cost-sensitive, space-constrained embedded DSP designs requiring G.711 compliance and seamless debug integration.
Availability
ADSP-2185LBSTZ-210 is available at Aetrix Electronics and suitable for voice channel processing, industrial motor control, medical ultrasound beamforming, and secure communications modem applications requiring stable component supply across long production lifecycles.
Supply support for ADSP-2185LBSTZ-210 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, headquartered in Norwood, MA.
The ADSP-2185LBSTZ-210 belongs to the ADSP-2100 family of fixed-point DSP microcomputers designed specifically for deterministic real-time signal processing in resource-constrained embedded systems where low latency, on-chip memory integration, and hardware-accelerated I/O are critical.
FAQ
What is the maximum external memory capacity supported by ADSP-2185LBSTZ-210?
ADSP-2185LBSTZ-210 supports up to 4 MByte of external byte-wide memory via its Byte DMA (BDMA) port, accessible in Full Memory Mode. This space is used for program overlays, coefficient tables, or data buffers. In Host Mode, external addressing is limited to a single A0 line, restricting direct access to small I/O peripherals unless expanded with external latching logic.
Does ADSP-2185LBSTZ-210 support hardware-based A-law and µ-law companding?
Yes, ADSP-2185LBSTZ-210 includes dedicated on-chip hardware for both A-law and µ-law companding per CCITT Recommendation G.711. This functionality is implemented within the SPORT modules and operates transparently during serial data transfer - eliminating the need for software-based companding and reducing CPU load in voice-processing applications.
Can ADSP-2185LBSTZ-210 operate from a crystal oscillator or external clock source?
Yes, ADSP-2185LBSTZ-210 accepts either a parallel-resonant fundamental-mode crystal connected across CLKIN and XTAL pins, or a TTL-compatible external clock applied to CLKIN only (with XTAL left unconnected). The input frequency must be 16.67 MHz to achieve the rated 30 ns instruction cycle time, corresponding to a 33 MHz internal instruction rate.
How many external interrupts does ADSP-2185LBSTZ-210 support, and what types are available?
ADSP-2185LBSTZ-210 supports six external interrupts: IRQ2 (edge- or level-sensitive), IRQL0 and IRQL1 (level-sensitive), IRQE (edge-sensitive), and IRQ0/IRQ1 (reconfigurable via SPORT1). Interrupt priorities are fixed in hardware, with RESET having highest priority and Timer lowest. All except power-down and RESET are individually maskable via the IMASK register.
Is ADSP-2185LBSTZ-210 pin-compatible with other ADSP-218x variants in TQFP packages?
Yes, ADSP-2185LBSTZ-210 shares identical pinout and package dimensions (100-lead TQFP, 14 mm × 14 mm) with other ADSP-218x family members including ADSP-2181, ADSP-2182, ADSP-2186, and ADSP-2189 in the same package variant. This enables drop-in replacement for functional upgrades or qualification changes without PCB redesign.
ADSP-2185LBSTZ-210 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADSP-21xx
- Package/Case:
- 100-LQFP
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Type:
- Fixed Point
- Interface:
- Host Interface, Serial Port
- Clock Rate:
- 52MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 80kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 3.30V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP (14x14)
ADSP-2185LBSTZ-210 FAQ
1.How can I place an order for ADSP-2185LBSTZ-210 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2185LBSTZ-210 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-2185LBSTZ-210 reliable?
The price and inventory of ADSP-2185LBSTZ-210 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2185LBSTZ-210 is usually 5 days.
3.What payment methods are accepted for ADSP-2185LBSTZ-210?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2185LBSTZ-210 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2185LBSTZ-210?
ADSP-2185LBSTZ-210 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2185LBSTZ-210 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-2185LBSTZ-210?
For technical support, including ADSP-2185LBSTZ-210 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2185LBSTZ-210 requirements.
6.How does Aetrix verify that ADSP-2185LBSTZ-210 is sourced from the original manufacturer or authorized distributors?
All ADSP-2185LBSTZ-210 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-2185LBSTZ-210 meets industry standards.
7.What is the process for return or replacement of ADSP-2185LBSTZ-210?
All ADSP-2185LBSTZ-210 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2185LBSTZ-210, 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-2185LBSTZ-210 part is unused and in its original packaging.
Return procedure for ADSP-2185LBSTZ-210:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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