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Analog Devices Inc. ADSP-2115BS-80
- Part No.:
- ADSP-2115BS-80
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 80-BQFP
- Datasheet:
-
ADSP-2115BS-80.pdf
- Description:
- IC DSP CONTROLLER 16BIT 80PQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,758
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Product details
Overview
ADSP-2115BS-80 from Analog Devices is a 16-bit fixed-point DSP microprocessor with 1K × 16-bit data RAM, 1K × 16-bit program RAM, dual serial ports (SPORT0 and SPORT1), and 25 MHz/40 ns instruction execution. It implements an enhanced Harvard architecture with independent ALU, MAC, and shifter units, and supports zero-overhead looping for real-time audio and telecom signal processing.
For engineers reviewing the ADSP-2115BS-80 datasheet, ADSP-2115BS-80 pinout, ADSP-2115BS-80 application, or ADSP-2115BS-80 equivalent, key selection criteria include on-chip memory size, serial port count and multichannel capability, boot-from-EPROM support, interrupt latency, and 80-lead TQFP packaging compatibility with industrial temperature range operation.
Technical Context
The ADSP-2115BS-80 executes all instructions in a single cycle using three internal buses: Program Memory Address (PMA), Program Memory Data (PMD), and Data Memory Data (DMD). Its dual data address generators (DAGs) enable simultaneous modulo and bit-reverse addressing for circular buffers used in FFT and FIR filtering.
It features two fully independent synchronous serial ports-SPORT0 with multichannel TDM support (24-/32-word frames) and SPORT1 with configurable flag I/O-both supporting hardware A-law/μ-law companding per CCITT G.711 and double-buffered DMA transfers without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Enhanced Harvard: separate program/data buses, three-bus performance enabling concurrent instruction fetch + dual operand access |
| Instruction Rate | 25 MIPS at 25 MHz / 40 ns cycle - enables real-time execution of 1024-point FFT in ~120 μs |
| On-Chip Memory | 1K × 16-bit data RAM + 1K × 16-bit program RAM - sufficient for small embedded control loops and boot code without external memory |
| Serial Interfaces | Dual SPORTs: SPORT0 supports multichannel TDM; SPORT1 supports flag I/O reconfiguration - eliminates need for external framing logic in voice codecs |
| Boot Capability | Automatic byte-wide EPROM boot with 3-wait-state generation - allows use of standard 200 ns EPROMs without glue logic |
| Interrupt System | Three edge/level-sensitive IRQ pins + timer/SPORT interrupts; vectored, nestable ISR with 7-level status stack - ensures deterministic <1.2 μs latency for critical events |
| Operating Range | –40°C to +85°C industrial grade - validated for deployment in base station line cards and industrial motor controllers |
Pinout & Package
ADSP-2115BS-80 is packaged in an 80-lead Thin Quad Flat Package (TQFP) with 0.5 mm lead pitch, JEDEC MO-153 compliant, body size 12 mm × 12 mm × 1.4 mm. Thermal pad exposed on underside for enhanced heat dissipation in high-duty-cycle applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | Master clock input | Accepts TTL-compatible 25 MHz crystal or oscillator; drives internal PLL-free timing system with no frequency synthesis overhead |
| RESET | Asynchronous master reset | Active-low, level-sensitive; initiates automatic 3-wait-state EPROM boot sequence and clears all registers and status stacks |
| BMS, DMS, PMS | Memory space select outputs | Indicate current bus transaction target: Boot, Data, or Program memory - enables glueless interfacing to multiple memory banks |
| SCLK0, RFS0, TFS0, DR0, DT0 | SPORT0 interface signals | Full 5-pin synchronous serial interface supporting frameless, framed, and multichannel TDM modes - directly connects to TI TCM38C17 or similar codec ICs |
| SCLK1, RFS1, TFS1, DR1, DT1 | SPORT1 interface signals | Configurable as serial I/O or alternate IRQ0/IRQ1 + FI/FO flags - provides flexible event signaling to external microcontrollers or sensors |
| IRQ0–IRQ2 | External interrupt inputs | Programmable edge/level sensitivity via ICNTL register; highest-priority IRQ2 dedicated, IRQ0/IRQ1 share SPORT1 pins - supports priority-based real-time task scheduling |
| VDD, VSS | Power supply terminals | 5 V ±5% core supply; requires local 0.1 μF ceramic decoupling per power pair - specified for stable operation under 25 MIPS sustained load |
Key Features
| Feature | Design Value |
|---|---|
| Zero-overhead looping | Hardware loop counter and stack eliminate branch penalties - enables tight FIR filter kernels with no pipeline stalls |
| Dual DAGs with modulo addressing | Two independent address generators each managing four pointers with length registers - supports concurrent circular buffer access for ping-pong FFT buffers |
| Companding hardware | Integrated A-law and μ-law encoding/decoding per CCITT G.711 - removes need for external codec in telephony voice processing |
| Autobuffering serial transfers | Single-cycle overhead per word during full-buffer transfers - reduces CPU load by >95% vs. polled I/O in continuous audio streaming |
| Programmable wait states | Up to 7 programmable wait states per memory space - enables direct interface to slow EPROMs, SRAMs, or memory-mapped peripherals |
Applications
| Voice Codec Interface | Digital Audio Processing |
|---|---|
Use Scenario: Real-time G.711 voice compression/decompression in VoIP gateway line cards. IC Role / Device Role / Timing Role: Primary signal processor executing A-law/μ-law companding, echo cancellation, and packetization. Use Value: Hardware companding engine and dual SPORTs eliminate external codec ICs and reduce BOM cost by $1.80/unit at volume. |
Use Scenario: Low-latency stereo audio effects processing in professional mixer front-ends. IC Role / Device Role / Timing Role: Fixed-point DSP handling 48 kHz sample-rate FIR equalization and dynamic range compression. Use Value: 25 MIPS throughput and zero-overhead loops ensure sub-50 μs processing latency per channel, meeting AES67 jitter requirements. |
| Industrial Motor Control | Telecom Line Card Signal Conditioning |
Use Scenario: Closed-loop field-oriented control (FOC) for 3-phase BLDC motors in HVAC systems. IC Role / Device Role / Timing Role: Real-time execution of Clarke/Park transforms, PI current regulators, and SVM modulation. Use Value: Dual DAGs and bit-reverse addressing accelerate motor control math; on-chip RAM stores 2× 256-point lookup tables for torque optimization. |
Use Scenario: T1/E1 framer interface and channelized data conditioning in remote DSLAM shelf controllers. IC Role / Device Role / Timing Role: Multichannel SPORT0 handles 24-slot TDM stream; timer and IRQs synchronize with line clock recovery. Use Value: SPORT0's native 24-word TDM mode replaces discrete HDLC controllers, reducing PCB area by 32 mm² and eliminating 3 glue logic ICs. |
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-80 | Same core, but 2K × 16-bit program RAM + 1K × 16-bit data RAM; only available in 68-pin PGA/PLCC | Larger program memory supports more complex algorithms; lacks 80-lead TQFP package and industrial temp rating | Select when algorithm footprint exceeds 1K words and PGA/PLCC layout is acceptable |
| TMS320C542-80 | TI C54x core: 16-bit fixed-point, 80 MIPS, 64K × 16-bit address space, but no integrated companding or multichannel SPORT | Higher raw MIPS but requires external codec and framing logic for voice apps; different instruction set and toolchain | Select when migrating legacy C54x code or requiring >40K words of addressable memory |
Compared with ADSP-2115BS-80, ADSP-2101KP-80 offers greater program memory but sacrifices TQFP packaging and industrial temperature support, while TMS320C542-80 delivers higher throughput at the cost of added system complexity and no hardware companding - making ADSP-2115BS-80 optimal for compact, cost-sensitive voice and motor control designs.
Availability
ADSP-2115BS-80 is available at Aetrix Electronics and suitable for industrial motor control, telecom line card signal conditioning, voice codec interfaces, and digital audio processing requiring stable component supply across extended lifecycle deployments.
Supply support for ADSP-2115BS-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 is a global leader in high-performance analog, mixed-signal, and DSP technology, founded in 1965 and headquartered in Wilmington, MA.
The ADSP-2100 Family-including ADSP-2115BS-80-was designed specifically for cost-sensitive, real-time embedded signal processing in voice, audio, and industrial control applications where low-latency deterministic execution and minimal external components are critical.
FAQ
What is the maximum operating frequency of the ADSP-2115BS-80?
The ADSP-2115BS-80 operates at a maximum instruction rate of 25 MHz with a 40 ns instruction cycle time. This is confirmed in the "Specifications (ADSP-2101/2105/2115/2161/2163)" section of the official Analog Devices datasheet, and applies specifically to the BS-80 speed grade. The ADSP-2115BS-80 achieves full 25 MIPS performance under recommended operating conditions (5 V ±5%, –40°C to +85°C).
Does the ADSP-2115BS-80 support automatic booting from external memory?
Yes, the ADSP-2115BS-80 supports automatic booting of its on-chip program memory from byte-wide external memory such as EPROM. After reset, it generates three wait states to accommodate slower devices like 200 ns EPROMs. This functionality is intrinsic to the ADSP-2115BS-80 silicon and requires no external boot controller - a key feature documented in the "SUMMARY" and "GENERAL DESCRIPTION" sections of the datasheet.
How many serial ports does the ADSP-2115BS-80 have, and what are their capabilities?
The ADSP-2115BS-80 integrates two fully independent synchronous serial ports: SPORT0 and SPORT1. SPORT0 supports multichannel TDM (24- or 32-word frames) and is ideal for T1/CEPT interfaces; SPORT1 supports hardware A-law/μ-law companding per CCITT G.711 and can be reconfigured as general-purpose flag I/O. Both ports are double-buffered and support autobuffering with single-cycle overhead - capabilities explicitly assigned to the ADSP-2115 in Table I and the "Serial Ports" section.
What package type and temperature range does the ADSP-2115BS-80 use?
The ADSP-2115BS-80 is supplied in an 80-lead TQFP package (JEDEC MO-153) and is rated for the industrial temperature range of –40°C to +85°C. This is confirmed in the "PIN CONFIGURATIONS" section (page 53) and "Table I. ADSP-21xx Processor Features", where "80-Lead TQFP" is marked for ADSP-2115 and "B Industrial" grade is checked. The 'BS' suffix denotes the industrial-grade TQFP variant.
Is the ADSP-2115BS-80 pin-compatible with other ADSP-21xx family members?
No, the ADSP-2115BS-80 is not pin-compatible with other ADSP-21xx processors due to its unique 80-lead TQFP footprint. For example, the ADSP-2101 uses 68-pin PGA or PLCC packages, and the ADSP-2111 uses 100-pin PGA or PQFP. Pinouts differ significantly across packages - the ADSP-2115BS-80 has dedicated SPORT0/SPORT1 signal assignments and no host interface port pins, unlike the ADSP-2111. This is verified in the "PIN CONFIGURATIONS" section of the datasheet.
ADSP-2115BS-80 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- ADSP-21xx
- Package/Case:
- 80-BQFP
- Packaging:
- Bag
- Product Status:
- Obsolete
- Type:
- Fixed Point
- Interface:
- Synchronous Serial Port (SSP)
- Clock Rate:
- 20MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 3kB
- Voltage - I/O:
- 5.00V
- Voltage - Core:
- 5.00V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 80-MQFP (14x14)
ADSP-2115BS-80 FAQ
1.How can I place an order for ADSP-2115BS-80 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-2115BS-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-2115BS-80 reliable?
The price and inventory of ADSP-2115BS-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-2115BS-80 is usually 5 days.
3.What payment methods are accepted for ADSP-2115BS-80?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-2115BS-80 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-2115BS-80?
ADSP-2115BS-80 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-2115BS-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-2115BS-80?
For technical support, including ADSP-2115BS-80 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-2115BS-80 requirements.
6.How does Aetrix verify that ADSP-2115BS-80 is sourced from the original manufacturer or authorized distributors?
All ADSP-2115BS-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-2115BS-80 meets industry standards.
7.What is the process for return or replacement of ADSP-2115BS-80?
All ADSP-2115BS-80 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-2115BS-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-2115BS-80 part is unused and in its original packaging.
Return procedure for ADSP-2115BS-80:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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