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Analog Devices Inc. ADSP-2185KST-133
- Part No.:
- ADSP-2185KST-133
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 100-LQFP
- Datasheet:
-
ADSP-2185KST-133.pdf
- Description:
- IC DSP CONTROLLER 16BIT 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:750
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Product details
Overview
ADSP-2185KST-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), designed for real-time audio processing, telecom channel coding, and embedded control in portable instrumentation.
For engineers reviewing the ADSP-2185KST-133 datasheet, ADSP-2185KST-133 pinout, ADSP-2185KST-133 application, or ADSP-2185KST-133 equivalent, key selection criteria include instruction cycle time (30 ns), power-down recovery latency (100 CLKIN cycles), internal DMA port width (16-bit), and TQFP-100 package compatibility with board-level thermal and routing constraints.
Technical Context
The ADSP-2185KST-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 loop-capable program sequencer. It executes all instructions-including bit-manipulation (bit set/clear/toggle/test), x² multiply, and biased rounding-in a single 30 ns cycle.
Its memory subsystem supports simultaneous dual-operand fetches via separate program/data buses, with flexible external interface modes: Full Memory Mode (14-bit address, 24-bit data) or Host Mode (16-bit multiplexed IDMA bus). Serial port operation includes hardware A-law/µ-law companding per CCITT G.711 and programmable frame sync timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Instruction Cycle Time | 30 ns - enables deterministic 33 MIPS sustained throughput for hard real-time signal processing loops. |
| On-Chip Program Memory | 16K × 24-bit RAM - stores both instructions and constants; eliminates external program ROM for boot-critical code. |
| On-Chip Data Memory | 16K × 16-bit RAM - provides low-latency access to filter coefficients, buffers, and state variables without wait states. |
| Serial Ports | 2 × double-buffered SPORTs - support full-duplex synchronous audio I/O, multichannel TDM (SPORT0), and IRQ/flag reconfiguration (SPORT1). |
| Power-Down Recovery | 100 CLKIN cycles - allows rapid wake-up from ultra-low-power standby for battery-powered voice recorders or sensor nodes. |
| External Interface Modes | Full Memory Mode (A13:0/D23:0) or Host Mode (IAD15:0/IWR/IRD) - enables either full off-chip memory expansion or glueless microcontroller co-processor integration. |
| Interrupt Sources | 11 total (6 external + 5 internal) - includes edge/level-configurable IRQ2/IRQL0/IRQL1/IRQE and nonmaskable power-down interrupt for fail-safe system control. |
Pinout & Package
ADSP-2185KST-133 is housed in a 100-lead thin quad flat pack (TQFP) with 0.5 mm pitch, 14 mm × 14 mm body, and exposed thermal pad. Pin functions are mode-dependent: external bus pins (A13:0, D23:0) and serial port pins (SPORT0/SPORT1) are multiplexed; flag/interrupt pins (PF7–PF0, IRQ2, IRQL0, etc.) retain concurrent functionality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Processor Reset Input | Active-low asynchronous reset; initializes all registers and forces Full Memory Mode if Mode C is sampled low during reset. |
| CLKIN / XTAL | Clock Input (Crystal or TTL) | Accepts 16.67 MHz crystal (for 33 MHz core) or half-rate TTL clock; XTAL unused when external clock applied. |
| A13:0 / D23:0 | Address/Data Bus (Full Memory Mode) | 14-bit address + 24-bit bidirectional data bus for external program/data/byte memory and I/O space decoding. |
| IAD15:0 / IWR / IRD | IDMA Port (Host Mode) | 16-bit multiplexed address/data bus with separate read/write controls for direct connection to host microcontrollers or FPGAs. |
| SPORT0 / SPORT1 | Synchronous Serial I/O | Each provides independent Tx/Rx clocks, frame sync, data lines; SPORT1 pins configurable as IRQ0/IRQ1/Flag In/Flag Out. |
| PF7–PF0 | Programmable Flag I/O | 13 total flags: 8 software-configurable I/O, 3 dedicated outputs (FL0–FL2), with concurrent interrupt capability on shared pins. |
| PWD / PWDACK | Power-Down Control | PWD input initiates hardware power-down; PWDACK output confirms entry into ultra-low-power dormant state. |
Key Features
| Feature | Design Value |
|---|---|
| Three-Unit Parallel Architecture | ALU, MAC, and shifter operate concurrently per cycle-enables single-cycle multiply-accumulate plus address update plus data move for FIR filtering. |
| Dual DAG Address Generation | Two independent DAGs each maintain four auto-modified pointers with modulo addressing-supports circular buffer FFTs and ping-pong DMA without CPU overhead. |
| Zero-Overhead Looping | Hardware loop counters and stack eliminate branch penalties-critical for tight inner loops in Viterbi decoders or adaptive filters. |
| ICE-Port™ Emulation Interface | 14-pin dedicated debug port enables in-system, non-intrusive instruction-level tracing and register/memory inspection without socket removal. |
| Flexible Low-Power Modes | Power-down (100-cycle wake), Idle (infinite wait), and Slow Idle (IDLE(n) with 16/32/64/128 clock divisor)-extends battery life in portable medical devices. |
Applications
| Audio Signal Processing | Telecom Channel Coding |
|---|---|
|
Use Scenario: Real-time stereo audio effects (reverb, equalization) in portable music players using on-chip RAM for coefficient storage and dual SPORTs for I²S interface. IC Role / Device Role / Timing Role: Primary DSP engine executing 24-bit fixed-point arithmetic with deterministic 30 ns instruction timing and hardware companding for analog codec interfacing. Use Value: Eliminates external program memory and reduces BOM count by integrating 32 KB of on-chip RAM-cutting PCB area and power by >40% vs. external EPROM-based designs. |
Use Scenario: G.729A speech codec implementation in VoIP gateways, leveraging SPORT0 for TDM voice channels and SPORT1 for control signaling. IC Role / Device Role / Timing Role: Dedicated channel processor handling 8 kbps encoded frames with sub-10 µs interrupt latency for jitter-free packet assembly. Use Value: Hardware A-law/µ-law companding and 100-cycle power-down recovery enable <10 ms call setup delay and <5 mA active current in always-on residential gateways. |
| Industrial Motor Control | Portable Instrumentation |
|
Use Scenario: Closed-loop field-oriented control (FOC) of BLDC motors in HVAC blowers, using timer-generated PWM and ADC-triggered SPORT sampling. IC Role / Device Role / Timing Role: Real-time controller executing PID and Clarke/Park transforms with 33 MIPS throughput and deterministic 30 ns instruction dispatch. Use Value: Dual DAGs enable simultaneous access to motor position lookup tables and current feedback buffers-reducing jitter in torque ripple below 0.5% THD. |
Use Scenario: Battery-powered handheld oscilloscope capturing 1 MS/s waveforms, storing pre-trigger data in on-chip RAM, and transmitting via SPORT to host PC. IC Role / Device Role / Timing Role: High-speed data acquisition front-end with 16K × 16-bit data RAM acting as circular capture buffer and SPORT1 configured for high-throughput streaming. Use Value: Power-down mode draws <10 µA standby current while retaining RAM contents-enabling >100-hour shelf life between charges in field-deployed test equipment. |
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-2189MSTZ-133 | Same ADSP-2100 architecture but with 32K × 24-bit program RAM and 32K × 16-bit data RAM; no power-down circuitry. | Better suited for complex algorithm loading (e.g., multi-band audio codecs) where ultra-low-power standby is not required. | Select ADSP-2189MSTZ-133 only if on-chip memory expansion outweighs battery-life requirements. |
| TMS320C549PGE | TI C54x core: 100 MIPS @ 100 MHz, 16K × 16-bit RAM, 32K × 16-bit ROM; different instruction set and memory map. | Requires full software porting; preferred in high-volume telecom infrastructure where TI toolchain and peripheral IP are standardized. | Choose TMS320C549PGE only when migrating legacy C54x code or requiring higher clock rate for wideband processing. |
Compared with ADSP-2185KST-133, ADSP-2189MSTZ-133 trades power-down capability for doubled on-chip RAM, while TMS320C549PGE offers higher peak MIPS but demands complete firmware rework and lacks ICE-Port™-enabled in-field debugging.
Availability
ADSP-2185KST-133 is available at Aetrix Electronics and suitable for audio signal processing, telecom channel coding, and industrial motor control requiring stable component supply across extended product lifecycles.
Supply support for ADSP-2185KST-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide.
The ADSP-21xx family was engineered for cost-sensitive, low-power embedded DSP applications-emphasizing on-chip memory integration, deterministic real-time execution, and minimal external support components.
FAQ
What clock frequency does ADSP-2185KST-133 require to achieve its rated 33 MIPS performance?
ADSP-2185KST-133 requires a 16.67 MHz crystal or half-rate TTL clock applied to CLKIN. Internally, this generates a 33 MHz instruction clock, yielding a 30 ns instruction cycle time and sustained 33 MIPS throughput. Using a lower clock degrades performance linearly; exceeding 16.67 MHz violates AC specifications and risks timing failure.
Does ADSP-2185KST-133 support in-circuit emulation without removing the chip from the target board?
Yes, ADSP-2185KST-133 integrates on-chip ICE-Port™ emulation support with a dedicated 14-pin interface. This allows full instruction-level debugging, register/memory inspection, and breakpoint setting while the ADSP-2185KST-133 remains soldered in the final system-no socket or adapter required.
Can ADSP-2185KST-133 boot directly from external byte-wide memory such as EPROM?
Yes, ADSP-2185KST-133 supports automatic booting from byte-wide external memory (e.g., EPROM) via its Byte DMA port. The device loads the first 64 words into on-chip program RAM upon reset, then begins execution-enabling field-upgradable firmware without JTAG programmers.
How many external interrupts does ADSP-2185KST-133 support, and what configuration options exist?
ADSP-2185KST-133 supports up to six external interrupts: IRQ2 (edge/level-selectable), IRQL0/IRQL1 (level-sensitive), IRQE (edge-sensitive), and IRQ0/IRQ1 (reconfigurable via SPORT1). All are individually maskable in IMASK, with priority order defined in the interrupt vector table-enabling precise real-time response to sensor triggers or communication events.
What is the maximum external memory size accessible via ADSP-2185KST-133's Byte DMA port?
ADSP-2185KST-133's Byte DMA port addresses up to 4 MByte of external byte-wide memory (e.g., EPROM or SRAM) for program overlays and data tables. Addressing uses 22 bits (A21:0), with programmable wait states accommodating slow peripherals-critical for cost-optimized data logging systems.
ADSP-2185KST-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:
- 5.00V
- Voltage - Core:
- 5.00V
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 100-LQFP (14x14)
ADSP-2185KST-133 FAQ
1.How can I place an order for ADSP-2185KST-133 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2185KST-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-2185KST-133 reliable?
The price and inventory of ADSP-2185KST-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-2185KST-133 is usually 5 days.
3.What payment methods are accepted for ADSP-2185KST-133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2185KST-133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2185KST-133?
ADSP-2185KST-133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2185KST-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-2185KST-133?
For technical support, including ADSP-2185KST-133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2185KST-133 requirements.
6.How does Aetrix verify that ADSP-2185KST-133 is sourced from the original manufacturer or authorized distributors?
All ADSP-2185KST-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-2185KST-133 meets industry standards.
7.What is the process for return or replacement of ADSP-2185KST-133?
All ADSP-2185KST-133 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2185KST-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-2185KST-133 part is unused and in its original packaging.
Return procedure for ADSP-2185KST-133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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