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Analog Devices Inc. ADSP-21065LKSZ-264
- Part No.:
- ADSP-21065LKSZ-264
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 208-BFQFP
- Datasheet:
-
ADSP-21065LKSZ-264.pdf
- Description:
- IC DSP CONTROLL 544KBIT 208-MQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADSP-21065LKSZ-264 from Analog Devices is a 32-bit SHARC® floating-point DSP microcomputer optimized for real-time signal processing in audio, communications, and industrial systems. It delivers 66 MIPS, 198 MFLOPS peak performance, features 544 Kbits of configurable dual-ported on-chip SRAM, and supports I²S with eight simultaneous transmit/receive channels. Its 208-lead MQFP package operates at 3.3 V with a 15 ns instruction cycle (66 MHz core).
For engineers reviewing the ADSP-21065LKSZ-264 datasheet, ADSP-21065LKSZ-264 pinout, ADSP-21065LKSZ-264 application, or ADSP-21065LKSZ-264 equivalent, key selection criteria include sustained 132 MFLOPS compute throughput, SDRAM controller integration for glueless external memory, dual serial ports with hardware TDM/I²S support, and code compatibility across the ADSP-2106x family.
Technical Context
The ADSP-21065LKSZ-264 implements the Super Harvard Architecture with four independent buses enabling simultaneous instruction fetch, dual data read/write, and I/O access per cycle. Its core integrates parallel ALU, multiplier, and barrel shifter units supporting IEEE 32-bit single-precision and 40-bit extended-precision floating-point arithmetic alongside 32-bit fixed-point operations.
It includes two hardware DAGs for circular buffer management, an on-chip instruction cache for looped FFT/filter acceleration, and a ten-channel DMA controller-two dedicated to the external port and eight to serial ports-enabling background transfers at up to 264 Mbytes/sec without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Super Harvard Architecture (SHARC®) with four independent buses for concurrent instruction/data/I/O access |
| Processing Performance | 66 MIPS, 198 MFLOPS peak, 132 MFLOPS sustained - enables real-time execution of complex FIR/IIR filters and 1024-pt FFT in 0.274 ms |
| On-Chip Memory | 544 Kbits dual-ported SRAM (288 Kbits Block 0 + 256 Kbits Block 1), configurable as 16-/32-/48-bit words for flexible code/data partitioning |
| Serial Interfaces | Two SPORTs with I²S/TDM/mu-law/A-law support - provides eight simultaneous Tx/Rx channels for multi-codec audio systems |
| External Memory Interface | SDRAM controller supporting 66 MHz operation and glueless interface to 16/64/128 Mb SDRAM devices |
| Host & Multiprocessing | Asynchronous 8/16/32-bit host port + distributed bus arbitration - enables 132 Mbytes/sec interprocessor transfer in dual-SHARC systems |
| Clock & Power | 3.3 V operation with 33 MHz input clock (66 MHz instruction rate); 15 ns cycle time ensures deterministic real-time latency |
Pinout & Package
ADSP-21065LKSZ-264 is housed in a 208-lead plastic metric quad flat pack (MQFP) with 0.5 mm lead pitch, compliant with JEDEC MS-026D. The package supports surface-mount assembly and thermal dissipation suitable for industrial and audio processing applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR23–0 | External address bus | 24-bit multiplexed address output for 64M-word external memory space; tri-stated during host/DMA accesses |
| DATA31–0 | External data bus | 32-bit bidirectional data path supporting 32-bit FP/fixed-point transfers; 16-bit short words use bits 15–0 |
| RD / WR / SW | Memory control strobes | Synchronous read/write/select signals enabling glueless interfacing to SRAM, EPROM, and peripherals |
| SPORT0/1 DTxX, DRxX, TCLKx, RCLKx | Serial port I/O | Dual independent synchronous serial interfaces with programmable word length (3–32 bits) and frame sync polarity |
| HBR / HBG / REDY | Host bus interface | Asynchronous host arbitration signals allowing 8/16/32-bit microprocessors to directly access IOP registers and DMA setup |
| CPA / BR2–1 / ID1–0 | Multiprocessing control | Distributed bus arbitration logic enabling two ADSP-21065LKSZ-264 devices to share external memory without glue logic |
Key Features
| Feature | Design Value |
|---|---|
| Configurable dual-ported SRAM | 544 Kbits split into two independently accessible banks - allows simultaneous core execution and DMA I/O without contention |
| Enhanced serial ports | I²S + TDM + DSP modes with hardware mu/A-law companding - eliminates external codec interface logic in multi-channel audio systems |
| SDRAM controller | Glueless 66 MHz interface supporting pipelined addressing - reduces BOM cost and PCB area vs. discrete memory controllers |
| Parallel computation units | ALU + multiplier + shifter executing in parallel per cycle - enables single-instruction multiply-accumulate with add/subtract for FFT butterfly acceleration |
| JTAG emulation support | IEEE 1149.1-compliant test access port - enables non-intrusive in-circuit debugging via EZ-ICE without affecting real-time timing |
Applications
| Professional Audio Mixing Console | Telecom Voice Gateway |
|---|---|
|
Use Scenario: Real-time mixing, EQ, dynamics processing, and effects rendering across 32+ analog input channels before A/D conversion. IC Role / Device Role / Timing Role: Primary signal processor handling all sample-rate conversion, FIR filtering, and floating-point matrix math with deterministic sub-100 µs latency. Use Value: 132 MFLOPS sustained performance and dual SPORTs with eight I²S channels enable full-duplex 24-bit/96 kHz processing across multiple codec ICs without external FIFOs. |
Use Scenario: VoIP gateway aggregating 64 concurrent G.722/G.711 calls with echo cancellation, transcoding, and jitter buffering. IC Role / Device Role / Timing Role: Central DSP executing adaptive NLMS echo cancellers, packet loss concealment, and TDM-to-IP framing in a single chip. Use Value: Hardware TDM multichannel mode and integrated SDRAM controller allow direct connection to 64-channel T1/E1 framer and 128 MB external memory for large acoustic models. |
| Industrial Motor Control System | Medical Ultrasound Beamformer |
|
Use Scenario: Closed-loop field-oriented control (FOC) of three-phase PMSM motors with real-time current/voltage sensing and PWM generation. IC Role / Device Role / Timing Role: Real-time controller executing Park/Clarke transforms, PI regulators, and space-vector modulation at 20 kHz switching frequency. Use Value: Dual DAGs with automatic circular buffer wraparound simplify implementation of 128-sample current observer filters; 15 ns cycle time guarantees <500 ns control loop jitter. |
Use Scenario: Digital beamforming for phased-array ultrasound transducers requiring 128-channel receive channel processing and dynamic focusing. IC Role / Device Role / Timing Role: High-precision delay-and-sum engine performing 40-bit extended-precision complex arithmetic on RF echo samples. Use Value: 40-bit extended-precision IEEE floating-point format maintains SNR > 110 dB over 1024-point delay lines; dual-ported SRAM enables simultaneous acquisition and beamforming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar floating-point DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-21060KBC-133 | 133 MHz version in 256-ball BGA; lacks SDRAM controller and I²S support; 448 Kbits on-chip SRAM | Targeted at legacy high-clock-speed compute-only tasks; requires external memory controller and codec interface logic | Select when maximum raw MIPS (133) is prioritized over integrated peripherals and system-level cost reduction |
| TMS320C6713BZDP250 | 250 MHz C6000 VLIW DSP; 256K × 16-bit RAM; no native I²S/TDM; uses EMIF for external memory | Optimized for algorithmic throughput in telecom baseband; lacks hardware circular buffers and SHARC-style DAG flexibility | Select when C6000 toolchain familiarity exists and application relies on compiler-scheduled VLIW parallelism rather than explicit DAG control |
Compared with ADSP-21065LKSZ-264, the ADSP-21060KBC-133 trades integrated peripherals for higher clock speed and smaller footprint, while the TMS320C6713BZDP250 offers greater peak MFLOPS but requires external glue logic for audio interfaces and lacks SHARC's deterministic circular buffer addressing - making ADSP-21065LKSZ-264 optimal for cost-sensitive, peripheral-rich real-time audio and industrial control designs.
Availability
ADSP-21065LKSZ-264 is available at Aetrix Electronics and suitable for professional audio mixing consoles, telecom voice gateways, industrial motor control systems, and medical ultrasound beamformers requiring stable component supply and long-term industrial lifecycle support.
Supply support for ADSP-21065LKSZ-264 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-21065LKSZ-264 belongs to the SHARC® family - engineered specifically for demanding real-time signal processing applications where both floating-point precision and deterministic low-latency execution are mandatory, such as audio synthesis, radar, and medical imaging.
FAQ
What clock frequency does the ADSP-21065LKSZ-264 require to achieve its rated 66 MHz instruction rate?
The ADSP-21065LKSZ-264 requires a 33 MHz input clock on the CLKIN pin. Its internal clock generator doubles this frequency to produce a 66 MHz instruction rate with a 15 ns cycle time. This configuration is fixed and cannot be overridden by software; using a non-33 MHz crystal will result in incorrect timing and undefined behavior. The ADSP-21065LKSZ-264 does not support PLL-based frequency multiplication beyond this 2× ratio.
Does the ADSP-21065LKSZ-264 support direct I²S interface to common audio codecs without external level-shifting or protocol translation?
Yes, the ADSP-21065LKSZ-264 supports direct glueless I²S interface to industry-standard audio codecs. Its SPORT0 and SPORT1 each provide dedicated DTxX, DRxX, TCLKx, and RFSx pins with 3.3 V LVTTL-compatible signaling and built-in 50 kΩ pull-up resistors. The hardware I²S mode handles left/right channel framing, word length (16–32 bits), and MSB-first transmission natively - eliminating need for FPGA or level-shifter ICs in typical 24-bit/48 kHz audio paths.
Can the on-chip SRAM of the ADSP-21065LKSZ-264 be configured to hold both program instructions and data simultaneously?
Yes, the 544 Kbits of on-chip SRAM in the ADSP-21065LKSZ-264 is fully configurable across two dual-ported blocks (Block 0: 288 Kbits, Block 1: 256 Kbits). Each block can store combinations of 16-bit, 32-bit, or 48-bit words - allowing one block to hold 32-bit instructions while the other holds 40-bit floating-point data, or any mix up to the total bit capacity. Accesses to different blocks occur in parallel without contention due to separate PM/DM bus paths.
Is the ADSP-21065LKSZ-264 pin-compatible with other members of the ADSP-2106x family, such as the ADSP-21062?
No, the ADSP-21065LKSZ-264 is not pin-compatible with the ADSP-21062 or ADSP-21060. While it is code- and function-compatible with the ADSP-2106x family, the ADSP-21065LKSZ-264 uses a 208-lead MQFP package, whereas the ADSP-21062 uses a 256-ball BGA and the ADSP-21060 uses a 256-pin PGA. Pin assignments for memory control, serial ports, and multiprocessing differ significantly between packages - requiring unique PCB layouts for each variant.
What development tools are officially supported for firmware development on the ADSP-21065LKSZ-264?
Analog Devices officially supports the VisualDSP++ integrated development environment and EZ-ICE in-circuit emulator for the ADSP-21065LKSZ-264. VisualDSP++ includes a C compiler, assembler, linker, cycle-accurate simulator, and debugger with mixed C/assembly view. The EZ-ICE connects via the JTAG port to provide full-speed non-intrusive emulation, memory/register inspection, and breakpoint control - all verified for ADSP-21065LKSZ-264 operation at 66 MHz.
ADSP-21065LKSZ-264 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- SHARC®
- Package/Case:
- 208-BFQFP
- Packaging:
- Tray
- Product Status:
- Last Time Buy
- Type:
- Floating Point
- Interface:
- Host Interface, Serial Port
- Clock Rate:
- 60MHz
- Non-Volatile Memory:
- External
- On-Chip RAM:
- 64kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 3.30V
- Operating Temperature:
- 0°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 208-MQFP (28x28)
ADSP-21065LKSZ-264 FAQ
1.How can I place an order for ADSP-21065LKSZ-264 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSP-21065LKSZ-264 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-21065LKSZ-264 reliable?
The price and inventory of ADSP-21065LKSZ-264 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSP-21065LKSZ-264 is usually 5 days.
3.What payment methods are accepted for ADSP-21065LKSZ-264?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSP-21065LKSZ-264 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSP-21065LKSZ-264?
ADSP-21065LKSZ-264 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSP-21065LKSZ-264 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-21065LKSZ-264?
For technical support, including ADSP-21065LKSZ-264 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSP-21065LKSZ-264 requirements.
6.How does Aetrix verify that ADSP-21065LKSZ-264 is sourced from the original manufacturer or authorized distributors?
All ADSP-21065LKSZ-264 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-21065LKSZ-264 meets industry standards.
7.What is the process for return or replacement of ADSP-21065LKSZ-264?
All ADSP-21065LKSZ-264 units undergo pre-shipment inspection (PSI). If there is an issue with ADSP-21065LKSZ-264, 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-21065LKSZ-264 part is unused and in its original packaging.
Return procedure for ADSP-21065LKSZ-264:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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