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Analog Devices Inc. ADSP-2115KS-66
- Part No.:
- ADSP-2115KS-66
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 80-BQFP
- Datasheet:
-
ADSP-2115KS-66.pdf
- Description:
- 16-BIT DIGITAL SIGNAL PROCESSOR
- Quantity:
- Payment:
- Shipping:
Inventory:580
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Product details
Overview
ADSP-2115KS-66 from Analog Devices is a 16-bit fixed-point DSP microprocessor with on-chip 1K RAM data memory and 1K RAM program memory, operating at 25 MHz (40 ns instruction cycle), featuring dual serial ports (SPORT0 and SPORT1), a programmable interval timer, and enhanced Harvard architecture with three-bus performance for real-time audio and telecom signal processing.
For engineers reviewing the ADSP-2115KS-66 datasheet, ADSP-2115KS-66 pinout, ADSP-2115KS-66 application, or ADSP-2115KS-66 equivalent, key selection criteria include instruction cycle time, on-chip memory configuration, serial port count and multichannel capability, interrupt structure, and TQFP-80 package compatibility for space-constrained embedded DSP designs.
Technical Context
The ADSP-2115KS-66 implements a dedicated ADSP-2100 Family core with independent ALU, multiplier/accumulator, and shifter units enabling single-cycle execution of multifunction instructions. Its dual data address generators support modulo and bit-reverse addressing essential for FFT and filter implementations.
It uses separate program and data memory buses with shared external address/data bus multiplexing, supports automatic booting from byte-wide EPROM, and delivers 25 MIPS throughput with zero-overhead looping and double-buffered serial I/O - all without host interface port (unlike ADSP-2111).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Enhanced Harvard, three-bus (PMA/PMD/DMA/DMD/R) for simultaneous instruction fetch and dual operand access |
| Instruction Rate | 25 MIPS @ 25 MHz; 40 ns cycle enables real-time 16-bit fixed-point filtering with deterministic latency |
| On-Chip Memory | 1K × 16-bit data RAM + 1K × 16-bit program RAM - sufficient for compact control-loop or voice codec firmware without external memory |
| Serial Interfaces | Dual synchronous serial ports (SPORT0 with multichannel T1/CEPT support; SPORT1 with flag I/O alternate mode) |
| Interrupt System | Three edge-/level-sensitive external IRQs + internal timer/serial interrupts; vectored priority scheme with 7-level status stack |
| Timing Control | Programmable wait-state generation and bus request/grant for interfacing to slow peripherals or external memory |
| Power Supply | 5 V ± 5%; CMOS process ensures low active power dissipation suitable for industrial temperature-grade operation |
Pinout & Package
ADSP-2115KS-66 is packaged in an 80-lead TQFP (Thin Quad Flat Package) with 0.5 mm pitch, optimized for automated assembly and thermal performance in dense PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | Clock Input | Accepts TTL-compatible external clock or crystal; drives internal PLL-free timing system at 25 MHz |
| RESET | Master Reset | Active-low asynchronous reset initiating boot sequence and clearing all registers and memory |
| IRQ0–IRQ2 | External Interrupt Inputs | Configurable as level- or edge-sensitive; IRQ0/IRQ1 share pins with SPORT1 data flags when not used as interrupts |
| SPORT0: SCLK0, RFS0, TFS0, DR0, DT0 | Serial Port 0 Interface | Full-duplex synchronous interface supporting multichannel framing (24/32-word TDM) for telephony interfaces |
| SPORT1: SCLK1, RFS1, TFS1, DR1, DT1 | Serial Port 1 Interface | Independent full-duplex port; DR1/DT1 pins configurable as general-purpose flag input/output (FI/FO) |
| BMS, DMS, PMS | Memory Space Select | Decode signals indicating active memory space (boot, data, or program) on shared external bus |
| BR/BG | Bus Request/Grant | Enables external DMA controller to seize external address/data buses while ADSP-2115KS-66 continues executing from on-chip memory |
Key Features
| Feature | Design Value |
|---|---|
| Zero-overhead looping | Hardware loop counters eliminate branch penalty - critical for tight FIR/IIR filter kernels |
| Bit-reverse addressing | Direct hardware support for FFT bit-reversal indexing without software overhead |
| Double-buffered serial ports | Automatic data buffering enables continuous streaming without CPU intervention during buffer swaps |
| Companding hardware | Integrated A-law and µ-law encoding/decoding per CCITT G.711 - eliminates external codec IC in voice systems |
| Automatic EPROM boot | On-reset loading of program memory from byte-wide external EPROM simplifies system initialization |
Applications
| Voice Codec System | Telecom Line Card |
|---|---|
Use Scenario: Real-time G.711 PCM encoding/decoding with echo cancellation in VoIP gateway hardware. IC Role / Device Role / Timing Role: Primary signal processor executing fixed-point adaptive filters and companding in deterministic sub-125 µs frame intervals. Use Value: On-chip companding and dual SPORTs eliminate external codec and simplify TDM routing between FXS/FXO interfaces. |
Use Scenario: Channelized T1/E1 line interface card performing CAS/CCS signaling, HDLC framing, and jitter buffering. IC Role / Device Role / Timing Role: Multichannel DSP handling 24/32 time slots per SPORT0 with precise frame sync alignment and low-latency interrupt response. Use Value: SPORT0 multichannel mode directly supports T1 (24-slot) or E1 (32-slot) bit streams without FPGA glue logic. |
| Industrial Motor Controller | Audio Effects Processor |
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase PMSM motors using space-vector PWM and current sensing. IC Role / Device Role / Timing Role: Real-time computation engine executing Clarke/Park transforms, PI regulators, and PWM update within 50 µs control cycles. Use Value: Single-cycle MAC and zero-overhead loops ensure deterministic execution timing for safety-critical motor torque regulation. |
Use Scenario: Low-latency digital effects unit (reverb, chorus, equalization) in professional audio mixing consoles. IC Role / Device Role / Timing Role: Dedicated audio DSP handling multiple concurrent 48 kHz stereo channels with sample-accurate I/O synchronization. Use Value: Dual SPORTs enable simultaneous input/output streaming while on-chip RAM stores coefficient tables and delay lines. |
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-2101KP-66 | Same 25 MHz speed grade but larger on-chip memory (2K program RAM + 1K data RAM); PGA-68 package | Higher memory headroom for larger algorithm footprints; less suitable for high-density surface-mount layouts | Select when firmware exceeds 1K program RAM and PGA packaging is acceptable |
| ADSP-2111KS-66 | Includes 16-bit host interface port (HIP), same memory size, identical pinout except HIP signal additions on 100-pin packages | Enables direct host microcontroller co-processing (e.g., 8051 or 68K) - ADSP-2115KS-66 lacks HIP entirely | Select only if host-DSP communication via parallel memory-mapped interface is required |
Compared with ADSP-2115KS-66, ADSP-2101KP-66 offers more on-chip RAM but requires PGA socketing and occupies more board area, while ADSP-2111KS-66 adds host interface functionality at the cost of larger package and higher BOM complexity - neither is pin-compatible nor drop-in replaceable.
Availability
ADSP-2115KS-66 is available at Aetrix Electronics and suitable for voice codec systems, telecom line cards, and industrial motor controllers requiring stable component supply across extended product lifecycles.
Supply support for ADSP-2115KS-66 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 since 1965.
The ADSP-2100 Family - including ADSP-2115KS-66 - was designed specifically for cost-sensitive, real-time embedded DSP applications demanding deterministic 16-bit fixed-point performance with minimal external components.
FAQ
What is the maximum operating frequency of the ADSP-2115KS-66?
The ADSP-2115KS-66 operates at a maximum instruction rate of 25 MHz, corresponding to a 40 ns instruction cycle time. This speed grade is confirmed in Table I of the ADSP-2100 Family datasheet and applies specifically to the KS-66 speed variant. The device achieves 25 MIPS throughput with single-cycle instruction execution across its ALU, MAC, and shifter units.
Does the ADSP-2115KS-66 include a host interface port (HIP)?
No, the ADSP-2115KS-66 does not include a host interface port. The HIP is exclusive to the ADSP-2111 variant within the ADSP-2100 Family. The ADSP-2115KS-66 retains dual serial ports, timer, and memory configuration of the base ADSP-21xx series but omits the 16-bit parallel HIP interface and associated flag registers found only on ADSP-2111 devices.
What package type is used for the ADSP-2115KS-66?
The ADSP-2115KS-66 is supplied in an 80-lead TQFP (Thin Quad Flat Package) with 0.5 mm lead pitch, as explicitly stated in the "PIN CONFIGURATIONS" section under "80-Lead TQFP (ADSP-2115)" on page 53 of the datasheet. This package replaces PLCC variants for improved thermal performance and surface-mount compatibility.
How much on-chip memory does the ADSP-2115KS-66 have?
The ADSP-2115KS-66 integrates 1K × 16-bit (2048 bytes) of on-chip program memory RAM and 1K × 16-bit (2048 bytes) of on-chip data memory RAM, as specified in Table I of the ADSP-2100 Family datasheet. This memory configuration is fixed for the ADSP-2115 variant and differs from ADSP-2101 (2K program RAM) and ADSP-2105 (512-word program RAM).
Can the ADSP-2115KS-66 boot from external memory?
Yes, the ADSP-2115KS-66 supports automatic booting from byte-wide external memory such as EPROM. Upon reset, it generates three wait states and loads program code into on-chip program memory via the external data bus. This feature is documented in the "SUMMARY" and "GENERAL DESCRIPTION" sections and enables standalone operation without external ROM shadowing logic.
ADSP-2115KS-66 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 80-BQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Fixed Point
- Interface:
- Host Interface, Synchronous Serial Port (SSP)
- Clock Rate:
- 16.67MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 1.5kB
- 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:
- 80-MQFP (14x14)
ADSP-2115KS-66 FAQ
1.How can I place an order for ADSP-2115KS-66 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2115KS-66 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-2115KS-66 reliable?
The price and inventory of ADSP-2115KS-66 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-2115KS-66 is usually 5 days.
3.What payment methods are accepted for ADSP-2115KS-66?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2115KS-66 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2115KS-66?
ADSP-2115KS-66 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2115KS-66 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-2115KS-66?
For technical support, including ADSP-2115KS-66 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2115KS-66 requirements.
6.How does Aetrix verify that ADSP-2115KS-66 is sourced from the original manufacturer or authorized distributors?
All ADSP-2115KS-66 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-2115KS-66 meets industry standards.
7.What is the process for return or replacement of ADSP-2115KS-66?
All ADSP-2115KS-66 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2115KS-66, 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-2115KS-66 part is unused and in its original packaging.
Return procedure for ADSP-2115KS-66:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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