My Inquiry
My Account
Analog Devices Inc. ADSST-21065LKS-240
- Part No.:
- ADSST-21065LKS-240
- Manufacturer:
- Analog Devices Inc.
- Category:
- DSP (Digital Signal Processors)
- Package:
- 208-BFQFP
- Datasheet:
-
ADSST-21065LKS-240.pdf
- Description:
- 32-BIT AUDIO PROCESSOR
- Quantity:
- Payment:
- Shipping:
Inventory:705
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADSST-21065LKS-240 from Analog Devices is a 32-bit floating-point audio DSP processor optimized for multichannel decoding and post-processing in home theater AV receivers and automotive audio systems. It delivers 66 MIPS, 198 MFLOPS peak performance, features 544 Kbits of user-configurable on-chip SRAM, supports I²S with 8 simultaneous receive/transmit channels, and operates at 60 MHz with 3.3 V supply across 0°C to +85°C case temperature.
For engineers reviewing the ADSST-21065LKS-240 datasheet, ADSST-21065LKS-240 pinout, ADSST-21065LKS-240 application, or ADSST-21065LKS-240 equivalent, key selection considerations include its SHARC architecture, Dolby/DTS/THX codec support, SDRAM interface capability, dual serial port DMA, and 208-lead MQFP package compatibility with industrial thermal requirements.
Technical Context
The ADSST-21065LKS-240 implements the Super Harvard Architecture Computer (SHARC) with four independent buses enabling dual data, instruction, and I/O fetch per cycle. Its 32-bit fixed-point and 32-/40-bit floating-point arithmetic units support real-time multichannel audio processing at 96 kHz sampling rates.
It integrates dedicated hardware accelerators for industry-standard codecs including Dolby Digital AC-3, DTS 5.1, THX Ultra2, and SRS Circle Surround II, alongside configurable serial ports (TFSx/RFSx/DTxX/DRxX), SDRAM controller (RAS/CAS/SDWE/SDCLKx), and JTAG debug interface (TCK/TMS/TDI/TDO/TRST).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | Super Harvard Architecture Computer (SHARC) with 4 independent buses for concurrent instruction/data/I/O fetch |
| Processing Performance | 66 MIPS, 198 MFLOPS peak, 132 MFLOPS sustained - enables real-time 7.1-channel audio decoding and post-processing |
| On-Chip Memory | 544 Kbits SRAM - fully user-configurable for program, data, or cache allocation in multichannel audio pipelines |
| Audio Interface | I²S-compatible with 8 simultaneous Rx/Tx channels - supports direct connection to multichannel audio codecs without external glue logic |
| Operating Voltage | 3.3 V ±0.235 V - compatible with standard low-voltage digital audio subsystems and LDO-regulated power domains |
| Temperature Range | 0°C to +85°C case operating temperature - validated for use in consumer AV receivers and automotive infotainment head units |
| Clock Frequency | 60 MHz instruction rate - derived from 30 MHz CLKIN via internal 2× PLL, enabling deterministic timing for audio sample synchronization |
Pinout & Package
ADSST-21065LKS-240 is housed in a 208-lead MQFP (S-208-2) package with 33 VDD pins, 37 GND pins, and 7 NC pins. Thermal design requires exposed pad soldering per Analog Devices' recommended layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADDR23–0 | External Bus Address | 32-bit address bus for external memory and peripheral access; supports multiprocessor address arbitration via ID1–0 configuration |
| DATA31–0 | External Bus Data | 32-bit bidirectional data path for instructions, floating-point samples, and control registers; no pull-ups required on unused lines |
| RFS0/RFS1, TFS0/TFS1 | Serial Frame Sync | Frame synchronization signals for dual 4-channel I²S streams - enables simultaneous 8-channel audio input/output |
| DR0A/DR0B, DT0A/DT0B | Serial Data Receive/Transmit | Dual serial port A/B channels supporting time-division multiplexed audio streams up to 96 kHz sampling rate |
| RAS/CAS/SDWE | SDRAM Control | Direct interface to external SDRAM for large buffer storage - eliminates need for external memory controllers in multichannel delay applications |
| TCK/TMS/TDI/TDO/TRST | JTAG Boundary Scan | Fully compliant IEEE 1149.1 interface for production test, emulation, and in-circuit debugging of audio firmware |
Key Features
| Feature | Design Value |
|---|---|
| Real-time multichannel decoding | Hardware-accelerated decode of Dolby Digital EX, DTS-ES Discreet 6.1, THX Ultra2, and SRS Circle Surround II - reduces host CPU load and enables feature-rich UI responsiveness |
| Configurable on-chip SRAM | 544 Kbits partitioned across program/data/cache banks - allows dynamic allocation for variable-latency audio algorithms like bass management or virtualization |
| Dual high-speed serial ports | Two independent I²S-capable ports with DMA support - enables simultaneous connection to ADC and DAC arrays without CPU intervention |
| SDRAM interface | Integrated RAS/CAS/SDWE/SDCLKx controller - supports up to 128 MB external memory for extended audio buffering and multi-zone playback |
| Automatic stream detection | On-the-fly identification of incoming bitstream format (AC-3, DTS, PCM, AAC) - eliminates manual format switching and improves end-user experience |
Applications
| Home Theater AVR Systems | Automotive Audio Receivers |
|---|---|
Use Scenario: Integrated 7.1-channel surround sound decoding and post-processing in premium AV receivers supporting HDMI, optical, and coaxial inputs. IC Role / Device Role / Timing Role: Primary audio DSP executing real-time Dolby/DTS/THX decoding, bass management, and speaker calibration algorithms at 96 kHz sample rate. Use Value: Enables single-chip implementation of theater-grade audio with <10 µs latency between input and decoded output channels. | Use Scenario: In-dash infotainment system delivering multichannel audio from Bluetooth, USB, and radio sources with cabin-specific equalization. IC Role / Device Role / Timing Role: Central audio processor handling format auto-detection, 5.1 upmixing, and vehicle-specific acoustic compensation using onboard SRAM buffers. Use Value: Supports concurrent decoding of two audio streams (e.g., navigation voice + music) with zero cross-talk due to hardware-isolated processing paths. |
| DVD/Blu-ray Players | Video Game Consoles |
Use Scenario: High-fidelity audio output from DVD-Video, SACD, and DVD-Audio discs with support for MLP lossless decoding and HDCD enhancement. IC Role / Device Role / Timing Role: Dedicated audio co-processor synchronizing PCM, DTS, and Dolby bitstreams with video frame timing via precise clock domain crossing. Use Value: Delivers bit-perfect 24-bit/96 kHz audio playback with <±1 sample jitter - meets studio master reproduction requirements. | Use Scenario: Real-time 3D positional audio rendering for immersive gaming experiences using head-related transfer function (HRTF) convolution. IC Role / Device Role / Timing Role: Low-latency audio engine performing dynamic channel routing, reverb, and Doppler shift calculations synchronized to game physics engine interrupts. Use Value: Achieves <15 ms end-to-end audio pipeline latency - critical for competitive gaming responsiveness and spatial accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSST-21065LCS-240 | Same core, 544 Kbits SRAM, 60 MHz, but rated for –40°C to +100°C case temperature | Required for under-hood automotive modules or industrial enclosures with extended thermal cycling | Select when ambient operating temperature exceeds +85°C or requires automotive AEC-Q100 alignment |
| ADSST-21065LKS-264 | Same package and temperature grade, but 66 MHz instruction rate and 198 MFLOPS peak performance | Suitable for higher channel count (e.g., 11.2) or additional post-processing (e.g., object-based audio rendering) | Select when application demands >66 MIPS sustained throughput or tighter real-time deadlines |
Compared with ADSST-21065LKS-240, the LCS-240 variant provides extended thermal robustness for harsh environments, while the LKS-264 offers higher computational headroom for future-proofing multichannel audio pipelines - both retain identical pinout, memory map, and software compatibility.
Availability
ADSST-21065LKS-240 is available at Aetrix Electronics and suitable for home theater AV receivers, automotive infotainment systems, and professional audio equipment requiring stable component supply and long-term manufacturing continuity.
Supply support for ADSST-21065LKS-240 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 digital signal processing semiconductors, serving precision instrumentation, industrial automation, and audio markets since 1965.
The SST-Melody-SHARC product line was designed specifically for high-fidelity, multichannel digital audio systems - integrating hardware-accelerated codecs, flexible memory architecture, and real-time I/O to replace discrete DSP + ASIC solutions in premium consumer and automotive audio platforms.
FAQ
What is the primary function of the ADSST-21065LKS-240 in an audio system?
The ADSST-21065LKS-240 serves as a dedicated 32-bit floating-point audio DSP processor that performs real-time multichannel decoding (Dolby, DTS, THX), post-processing (equalization, virtualization), and I/O interfacing. Its SHARC architecture enables deterministic execution of complex audio algorithms with sub-millisecond latency, making it ideal for premium AV receivers and automotive head units where timing-critical audio fidelity is essential. The ADSST-21065LKS-240 integrates all necessary peripherals to eliminate external glue logic in production designs.
Does the ADSST-21065LKS-240 support external SDRAM, and what is the interface capability?
Yes, the ADSST-21065LKS-240 includes a full SDRAM controller with dedicated RAS, CAS, SDWE, SDCLK0/1, SDCKE, and SDA10 pins. It supports standard x16/x32 SDRAM devices up to 128 MB, enabling large audio buffers for multizone playback, karaoke effects, or extended delay lines. The controller handles refresh cycles autonomously and supports burst reads/writes aligned to audio sample boundaries. This capability is confirmed in the functional block diagram and pin descriptions for ADSST-21065LKS-240.
What audio formats does the ADSST-21065LKS-240 natively decode in hardware?
The ADSST-21065LKS-240 provides hardware-accelerated decoding for Dolby Digital AC-3, Dolby Digital EX, Dolby Pro Logic II, DTS 5.1, DTS-ES Discreet 6.1, DTS NEO:6, THX Ultra2, HDCD, MPEG AAC, and MLP (implemented, not certified). These codecs are explicitly listed in the FEATURES section of the datasheet and supported via dedicated instruction sets and memory-mapped accelerators - not software-only emulation. The ADSST-21065LKS-240 achieves real-time decode without host CPU intervention.
Is the ADSST-21065LKS-240 pin-compatible with other members of the SST-Melody-SHARC family?
ADSST-21065LKS-240 shares the same 208-lead MQFP (S-208-2) package and pinout with ADSST-21065LCS-240 and ADSST-21065LKS-264, as confirmed by identical pin configuration diagrams and ordering guide entries. All three variants use identical ADDR23–0, DATA31–0, serial port, and SDRAM control pin assignments. However, thermal specifications and maximum clock frequency differ - requiring validation of timing margins and power delivery when substituting across speed grades.
What development resources are available for the ADSST-21065LKS-240?
Analog Devices provides evaluation boards, sample applications, drivers, and an optimized library of routines for ADSST-21065LKS-240 - including full Dolby and DTS codec suites, multichannel AAC, and WaveSurround implementations. The EZ-ICE emulator interface (TCK/TMS/TDI/TDO/TRST) enables real-time debugging, and the ADREDY-controlled REDY signal supports host processor integration. These resources are documented in the GENERAL DESCRIPTION and APPLICATIONS sections of the official datasheet for ADSST-21065LKS-240.
ADSST-21065LKS-240 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 208-BFQFP
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Audio Processor, Floating Point
- Interface:
- DMA, I2S, SPI
- Clock Rate:
- 60MHz
- Non-Volatile Memory:
- Boot ROM (1MB)
- On-Chip RAM:
- 68kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 3.30V
- Operating Temperature:
- 0°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 208-MQFP (28x28)
ADSST-21065LKS-240 FAQ
1.How can I place an order for ADSST-21065LKS-240 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADSST-21065LKS-240 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 ADSST-21065LKS-240 reliable?
The price and inventory of ADSST-21065LKS-240 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADSST-21065LKS-240 is usually 5 days.
3.What payment methods are accepted for ADSST-21065LKS-240?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADSST-21065LKS-240 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADSST-21065LKS-240?
ADSST-21065LKS-240 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADSST-21065LKS-240 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 ADSST-21065LKS-240?
For technical support, including ADSST-21065LKS-240 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADSST-21065LKS-240 requirements.
6.How does Aetrix verify that ADSST-21065LKS-240 is sourced from the original manufacturer or authorized distributors?
All ADSST-21065LKS-240 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 ADSST-21065LKS-240 meets industry standards.
7.What is the process for return or replacement of ADSST-21065LKS-240?
All ADSST-21065LKS-240 units undergo pre-shipment inspection (PSI). If there is an issue with ADSST-21065LKS-240, 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 ADSST-21065LKS-240 part is unused and in its original packaging.
Return procedure for ADSST-21065LKS-240:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADSST-21065LKS-240 Tags
-
TMS320C5535AZAY10
Texas Instruments
-
TMS320VC5501PGF300
Texas Instruments
-
ADSP-BF592KCPZ
Analog Devices Inc.
-
ADAU1463WBCPZ150
Analog Devices Inc.
-
TMS320VC5402PGE100
Texas Instruments
-
ADAU1701JSTZ-RL
Analog Devices Inc.
-
ADAU1701JSTZ
Analog Devices Inc.
-
TMS320VC5502PGF300
Texas Instruments
-
ADAU1462WBCPZ300RL
Analog Devices Inc.
-
ADAU1452KCPZRL
Analog Devices Inc.
-
ADAU1452WBCPZ-RL
Analog Devices Inc.
-
TMS320C6747DZKB3
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
