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Analog Devices Inc. ADSP-2115KS-80
- Part No.:
- ADSP-2115KS-80
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 80-BQFP
- Datasheet:
-
ADSP-2115KS-80.pdf
- Description:
- 16-BIT DIGITAL SIGNAL PROCESSOR
- Quantity:
- Payment:
- Shipping:
Inventory:108
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Product details
Overview
ADSP-2115KS-80 from Analog Devices is a 16-bit fixed-point DSP microprocessor with on-chip 1K × 16-bit data RAM and 1K × 16-bit program RAM, 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-80 datasheet, ADSP-2115KS-80 pinout, ADSP-2115KS-80 application, or ADSP-2115KS-80 equivalent, key selection criteria include its 25 MIPS throughput, dual-data-address-generator support for circular buffering, hardware companding (A-law/µ-law), zero-overhead looping, and 80-lead TQFP package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The ADSP-2115KS-80 implements a dedicated ADSP-2100 Family core with independent ALU, multiplier/accumulator, and shifter units interconnected via the internal 16-bit R bus. Its dual data address generators (DAG1/DAG2) support modulo and bit-reverse addressing essential for FFT and filter implementations.
It executes all instructions in a single cycle-including simultaneous program fetch, dual data moves, address pointer updates, and computation-enabled by separate program and data memory buses sharing external address/data lines under BMS/DMS/PMS control signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Enhanced Harvard with three-bus performance: instruction bus + dual data buses for concurrent fetch/move/compute |
| Instruction Rate | 25 MIPS at 25 MHz; 40 ns single-cycle execution enables deterministic real-time loop timing |
| On-Chip Memory | 1K × 16-bit data RAM + 1K × 16-bit program RAM - sufficient for boot code and small algorithm kernels without external memory |
| Serial Interfaces | Dual synchronous serial ports (SPORT0 multichannel-capable, SPORT1 configurable as flags) with hardware A-law/µ-law companding per CCITT G.711 |
| Timing Control | Programmable 16-bit timer with TSCALE/TPERIOD registers generating precise periodic interrupts for sample-rate synchronization |
| Interrupt System | Three external IRQ pins (IRQ0–IRQ2), level/edge-selectable; vectored priority-based handling with seven-level status stack |
| Operating Range | Industrial grade: –40°C to +85°C; 5 V ± 5% supply; compatible with standard TTL/CMOS logic levels |
Pinout & Package
ADSP-2115KS-80 is housed in an 80-lead Thin Quad Flat Package (TQFP) with 0.5 mm lead pitch, thermally enhanced for sustained 25 MHz operation in embedded signal-processing environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power Supply / Ground | Separate analog/digital power domains not implemented; single 5 V rail powers entire core and I/O |
| CLKIN | Master Clock Input | Accepts crystal (1–25 MHz) or TTL clock; drives internal PLL-free timing system with no frequency change tolerance |
| RESET | Asynchronous Reset | Active-low signal initializing PC to 0x0000, clearing registers, and initiating automatic EPROM boot sequence |
| BMS, DMS, PMS | Memory Space Select | Three-state outputs indicating current bus usage: Boot, Data, or Program memory space during external access |
| SCLK0/RFS0/TFS0/DR0/DT0 | SPORT0 Interface | Five-pin synchronous serial interface supporting frameless or framed modes, 3–16-bit word lengths, and multichannel TDM (24/32-word) |
| SCLK1/RFS1/TFS1/DR1/DT1 | SPORT1 Interface | Independent serial port with identical framing flexibility; DR1/DT1 pins optionally remapped as FI/FO general-purpose flags |
| IRQ0, IRQ1, IRQ2 | External Interrupt Inputs | Configurable edge- or level-sensitive; IRQ0/IRQ1 share pins with SPORT1 functions; IRQ2 is dedicated |
| TCNT, TCLK, TOUT | Timer Signals | Timer count output, clock input, and pulse output - enable external event capture or waveform generation synchronized to internal clock |
Key Features
| Feature | Design Value |
|---|---|
| Zero-overhead looping | Hardware loop counter and stack eliminate branch penalties - critical for FIR/IIR filter kernels and FFT butterflies |
| Automatic EPROM boot | Loads program memory from byte-wide external EPROM after reset using three default wait states - eliminates boot loader firmware |
| Dual data address generators | Each maintains four pointers with modulo length registers - enables simultaneous circular buffer management for ping-pong I/O and coefficient tables |
| Companding hardware | Dedicated A-law/µ-law encoding/decoding in each SPORT - offloads CPU from voice codec processing in telephony systems |
| Double-buffered serial ports | Auto-switching between primary/secondary buffers on frame completion - prevents data loss during interrupt service routine execution |
Applications
| Voice Codec System | Telecom Line Card |
|---|---|
Use Scenario: Real-time G.711 PCM compression/decompression in VoIP gateways with echo cancellation. IC Role / Device Role / Timing Role: Primary signal processor executing adaptive filters and companding; 25 MHz clock ensures sub-125 µs frame latency. Use Value: On-chip companding hardware reduces host CPU load by >90% versus software-only implementation; dual SPORTs handle simultaneous upstream/downstream streams. | Use Scenario: Channelized T1/E1 interface card aggregating 24/32 voice channels with per-channel gain control. IC Role / Device Role / Timing Role: Multichannel DSP managing time-slot assignment, framing, and jitter buffering; SPORT0 configured for 24-word TDM. Use Value: Bit-reverse addressing accelerates FFT-based spectral analysis; 1K data RAM stores per-channel coefficients without external memory access. |
| Industrial Motor Controller | Audio Effects Processor |
Use Scenario: Closed-loop field-oriented control (FOC) of 3-phase AC motors with real-time current sensing and PWM modulation. IC Role / Device Role / Timing Role: Real-time computation engine performing Clarke/Park transforms and PI regulation; timer outputs synchronize ADC sampling and PWM edges. Use Value: Single-cycle MAC enables 20 kHz current loop update rate; zero-overhead loops maintain deterministic timing across variable load conditions. | Use Scenario: Low-latency digital reverb and equalization module in professional audio mixing consoles. IC Role / Device Role / Timing Role: Dedicated audio DSP executing FIR filter banks and delay-line networks; SPORT0/SPORT1 route I2S inputs/outputs. Use Value: Dual DAGs manage circular delay buffers and coefficient tables concurrently; 1K program RAM holds multiple effect presets with instant recall. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DSP microprocessor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-2115KS-66 | Same core, 16.67 MHz (60 ns) speed grade; lower power consumption at reduced throughput | Suitable for cost-sensitive audio playback systems where 25 MIPS is unnecessary | Select when thermal budget or supply current constraints outweigh peak performance needs |
| ADSP-2105KS-80 | Same 80-lead TQFP package but only 512-word data RAM and 1K program RAM; lacks SPORT0 | Targeted at single-channel voice applications with minimal memory footprint | Choose only if SPORT0 multichannel capability and full 1K data RAM are not required |
Compared with ADSP-2115KS-80, the ADSP-2115KS-66 trades 25 MIPS deterministic throughput for lower dynamic power, while ADSP-2105KS-80 sacrifices SPORT0 and half the data RAM to reduce silicon cost - neither offers pin-to-pin or functional equivalence without design revision.
Availability
ADSP-2115KS-80 is available at Aetrix Electronics and suitable for voice codec systems, telecom line cards, industrial motor controllers, and audio effects processors requiring stable component supply across extended product lifecycles.
Supply support for ADSP-2115KS-80 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 company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision instrumentation, communications, and industrial applications.
The ADSP-2100 Family - including ADSP-2115KS-80 - was designed for real-time embedded signal processing in resource-constrained systems where deterministic low-latency execution, compact memory footprint, and hardware-accelerated I/O are critical.
FAQ
What is the maximum operating frequency of the ADSP-2115KS-80?
The ADSP-2115KS-80 operates at a maximum frequency of 25 MHz, corresponding to a 40 ns instruction cycle time. This speed grade is confirmed in Table I of the ADSP-21xx datasheet and applies specifically to the KS-80 suffix variant. The device achieves 25 MIPS throughput with all instructions executing in a single cycle, enabling deterministic real-time signal processing in applications such as voice codecs and motor control.
Does the ADSP-2115KS-80 include a host interface port (HIP)?
No, the ADSP-2115KS-80 does not include a host interface port. The HIP is exclusive to the ADSP-2111 variant, as clearly stated in the datasheet's feature comparison table (Table I) and functional block diagram. ADSP-2115KS-80 provides two serial ports (SPORT0 and SPORT1), a timer, and interrupt inputs - but no parallel host interface. Systems requiring host-DSP communication must use serial port bridging or external glue logic.
What memory configuration does the ADSP-2115KS-80 provide on-chip?
The ADSP-2115KS-80 integrates 1K × 16-bit (2,048 words) of on-chip data RAM and 1K × 16-bit (2,048 words) of on-chip program RAM. This configuration is explicitly listed in Table I under the "2115" column and supports autonomous operation with no external memory required for basic algorithms. The memory map allocates distinct address spaces for program and data, enabled by the ADSP-2100 Family's enhanced Harvard architecture.
Which package type is used for the ADSP-2115KS-80?
The ADSP-2115KS-80 uses an 80-lead Thin Quad Flat Package (TQFP), as specified in the "PIN CONFIGURATIONS" section (page 53) and Table I of the datasheet. This package has a 0.5 mm lead pitch and is rated for industrial temperature range (–40°C to +85°C). It is distinct from the 68-lead PLCC used for earlier ADSP-2101 variants and the 100-pin packages reserved for the ADSP-2111 with HIP.
Can the ADSP-2115KS-80 perform hardware companding for voice processing?
Yes, the ADSP-2115KS-80 supports hardware A-law and µ-law companding in both serial ports (SPORT0 and SPORT1), as documented in the "FEATURES" section and "Serial Ports" chapter. This functionality complies with CCITT Recommendation G.711 and operates transparently during data transfer - eliminating the need for CPU cycles to perform software-based companding. It is particularly valuable in telephony and VoIP endpoint designs where real-time compression is mandatory.
ADSP-2115KS-80 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:
- 20MHz
- 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-80 FAQ
1.How can I place an order for ADSP-2115KS-80 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2115KS-80 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-80 reliable?
The price and inventory of ADSP-2115KS-80 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-80 is usually 5 days.
3.What payment methods are accepted for ADSP-2115KS-80?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2115KS-80 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2115KS-80?
ADSP-2115KS-80 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2115KS-80 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-80?
For technical support, including ADSP-2115KS-80 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2115KS-80 requirements.
6.How does Aetrix verify that ADSP-2115KS-80 is sourced from the original manufacturer or authorized distributors?
All ADSP-2115KS-80 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-80 meets industry standards.
7.What is the process for return or replacement of ADSP-2115KS-80?
All ADSP-2115KS-80 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2115KS-80, 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-80 part is unused and in its original packaging.
Return procedure for ADSP-2115KS-80:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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