ADSP-21992BSTZ 160MHz 16-Bit DSP with CAN | Analog Devices
MPN： ADSP-21992BSTZ ✓ 啟用中ADSP-21992BSTZ 概覽
A digital signal processor, or DSP, is a semiconductor optimized for arithmetic operations used in filtering, modulation, control, audio, and communications. The ADSP-21992 belongs to the fixed-point ADSP-2199x family and combines a dedicated signal-processing core with serial communications, SPI-compatible I/O, DMA, timers, programmable flag pins, interrupts, and embedded control peripherals. This hierarchy places the device between a general-purpose microcontroller and a high-performance system processor.
Key features include a 160 MHz maximum clock, full CAN 2.0B support, 16 configurable CAN mailboxes, and individual acceptance filters. Its on-chip program and data RAM eliminate external memory requirements for many moderate-size embedded applications. Additional integrated resources include a serial port, an SPI-compatible port, a DMA controller, three programmable timers, general-purpose programmable flag pins, and extensive interrupt capabilities.
The fixed-point architecture is suitable for real-time filtering, industrial motor and power control, automotive body electronics, communications gateways, and embedded CAN nodes. Its dedicated arithmetic resources execute signal-processing algorithms efficiently while the CAN peripheral handles network messaging. The 176-lead LQFP package supports broad external connectivity and is intended for leaded-board assembly rather than the smallest surface-mount designs.
Designers should account for the processor’s external clock, reset, program-memory execution, and I/O requirements when laying out the PCB. Because the ADSP-21992BSTZ is a mixed-signal controller, stable supply distribution, correct decoupling, and controlled clock routing are essential for repeatable real-time performance. The integrated CAN, DMA, timers, serial port, and SPI-compatible interface reduce the need for external peripheral ICs in connected embedded systems.
This page combines manufacturer specifications, package information, application guidance, verified-source references, and a drop-in replacement assessment. It also distinguishes true pin-compatible options from DSPs that are only functionally similar, helping engineers avoid redesigns based on speed or instruction-set differences.
直接替換替代品，適用於 ADSP-21992BSTZ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
ADSP-21992BST
✅ 直接替換📋 參考替代品（不在目錄中）
ADSP-21992BSTZ 規格
| Processor Type | Fixed-point mixed-signal digital signal processor |
| Instruction Set Width | 16-bit |
| 最大時脈頻率 | 160 MHz |
| Program Memory | 32K words on-chip RAM |
| Data Memory | 16K words on-chip RAM |
| CAN Support | CAN 2.0B |
| CAN Mailboxes | 16 configurable mailboxes |
| CAN Acceptance Filters | Individual acceptance filters |
| Serial Port | 1 integrated serial port |
| SPI-Compatible Port | Integrated SPI-compatible port |
| DMA Controller | 1 integrated DMA controller |
| Programmable Timers | 3 integrated timers |
| Programmable Flag Pins | General-purpose programmable flag pins |
| 工作溫度 | -40 °C to +85 °C |
| 封裝 | 176-lead LQFP (24 x 24 mm) |
| 安裝類型 | Surface mount |
| Process Technology | CMOS |
| RoHS 狀態 | Compliant |
| REACH Status | Compliant |
ADSP-21992BSTZ 176-lead lqfp (24 x 24 mm) 腳位配置指南
ADSP-21992BSTZ（176-lead lqfp (24 x 24 mm) 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： ADSP-21992BSTZ.
請參閱 資料表 以查看完整腳位配置。
典型應用
ADSP-21992BSTZ 適用於 6 應用s: CAN-Connected Industrial Motor Control, Automotive Body and Chassis Control, Digital Filtering and Signal Conditioning, Communications Gateway and Protocol Bridge, Power and Energy Control Subsystem, Embedded Audio and Communications Processing.
CAN-Connected Industrial Motor Control
The ADSP-21992BSTZ fits real-time motor-control nodes because its 160 MHz fixed-point DSP core provides computational headroom for feedback algorithms, current and position loops, and digital filtering. Its integrated CAN 2.0B controller, 16 configurable mailboxes, and individual acceptance filters allow the controller to exchange commands and diagnostics with a fieldbus or supervisory network. The three programmable timers support periodic control and timing tasks, while DMA reduces processor involvement in block transfers. With 32K words of program RAM and 16K words of data RAM, moderate-size algorithms can execute from internal memory, reducing external-bus contention during time-critical loops.
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Automotive Body and Chassis Control
The ADSP-21992BSTZ is applicable to automotive body-control modules that combine responsive signal processing with networked control. Its -40 °C to +85 °C operating range, 160 MHz fixed-point processing, and integrated CAN 2.0B interface support tasks such as actuator coordination, switch-state processing, and diagnostic messaging. Sixteen configurable CAN mailboxes and individual acceptance filters help separate traffic classes and control urgent messages. The three timers and DMA controller assist with periodic sampling and efficient data movement, while internal program and data RAM supports compact, deterministic firmware without requiring a separate memory bus for every access.
推薦
Digital Filtering and Signal Conditioning
The ADSP-21992BSTZ is well suited to fixed-point filtering, signal conditioning, and embedded measurement nodes because its DSP core is designed for high-rate arithmetic rather than general-purpose control. The 160 MHz clock supports deterministic implementation of FIR and IIR processing, while 16K words of data RAM provide working space for samples and filter states. The serial port and SPI-compatible port allow external converters or sensors to feed the processor, and DMA can transfer sample blocks with reduced CPU overhead. Three timers support deterministic sampling intervals, making the device suitable for measurement, instrumentation, and embedded waveform-processing subsystems.
推薦
Communications Gateway and Protocol Bridge
The ADSP-21992BSTZ can serve as the central processor in an embedded communications gateway when deterministic control and CAN connectivity are required together. Its fixed-point core can handle framing, filtering, and protocol transformation, while the CAN 2.0B peripheral with 16 mailboxes supports multiple message queues and acceptance filters. The serial port and SPI-compatible interface provide paths to additional transceivers or storage, and DMA handles repetitive data movement. Internal program RAM of 32K words supports a substantial embedded protocol stack, while the 16K-word data-memory area can accommodate packet buffers and working state.
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Power and Energy Control Subsystem
The ADSP-21992BSTZ is appropriate for a dedicated power-control or energy-monitoring subsystem that requires both signal processing and structured real-time behavior. At 160 MHz, the fixed-point core can execute current-control, harmonic, or compensation algorithms, while timers establish repeatable sampling and update periods. The integrated DMA controller improves data-transfer efficiency, and the serial and SPI-compatible ports can connect converters or measurement components. CAN communication allows the subsystem to report operating states, accept setpoints, and participate in coordinated plant control without requiring a separate communication controller.
推薦
Embedded Audio and Communications Processing
The ADSP-21992BSTZ can support embedded audio, communications, or modulation tasks where fixed-point throughput and low-latency peripheral access matter. The 160 MHz DSP architecture executes filtering and signal transformations, while 32K words of program RAM can hold specialized routines and the 16K words of data RAM can hold sample buffers. The serial port and SPI-compatible port provide flexible links to codecs, converters, or radio interfaces. Its timers support periodic frame handling, and CAN offers a separate channel for control, status, or networked synchronization in industrial communication equipment.
推薦
推薦產品摘要
工程參考資料，適用於 ADSP-21992BSTZ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADSP-21992BST |
|---|---|---|
| Brand | Analog Devices | Analog Devices |
| Package | 176-LQFP (24 x 24 mm) | 176-LQFP (24 x 24 mm) |
| Processor Type | Fixed-point mixed-signal DSP | Fixed-point mixed-signal DSP |
| Maximum Clock Frequency | 160 MHz | 160 MHz |
| Instruction Set Width | 16-bit | 16-bit |
| Program Memory | 32K words on-chip RAM | 32K words on-chip RAM |
| Data Memory | 16K words on-chip RAM | 16K words on-chip RAM |
| CAN Support | CAN 2.0B with 16 configurable mailboxes | CAN 2.0B with 16 configurable mailboxes |
主要差異化特點
- Integrated CAN 2.0B controller for network-connected real-time control (對比ADSP-BF533SKSTZ-5V)
- Dedicated ADSP-2199x fixed-point architecture with integrated real-time peripherals (對比ADSP-2186MBSTZ-266)
- 176-LQFP footprint with the same-family ADSP-21992BST alternative (對比ADSP-21992BST)
設計說明
Place all required decoupling capacitors close to their corresponding power and ground pins, following the exact connection and capacitance recommendations in the manufacturer datasheet. Keep the 160 MHz clock route short and return the clock reference through a continuous, low-impedance ground path. The 176-LQFP footprint has a 0.5 mm lead pitch, so use a PCB assembly process and land pattern capable of supporting fine-pitch leaded LQFP soldering.
Separate clock, serial, SPI-compatible, and CAN routing from sensitive analog or high-impedance inputs wherever the board layout permits. Avoid long parallel traces that can increase coupling, and provide a direct ground reference beneath critical clock routes. If external clocks or converters are used, terminate and level-shift their interfaces according to the datasheet rather than relying on general-purpose I/O assumptions.
Do not treat processors with the same 176-lead package count as interchangeable. ADSP-2186MBSTZ-266 and ADSP-BF533SKSTZ-5V use different processor families, instruction sets, memory maps, and peripheral arrangements, and the comparison record explicitly states that ADSP-2186MBSTZ-266 is not package- or pin-compatible. Verify the complete pin table, clock requirements, reset behavior, and firmware target before approving any substitution.
Reserve a dedicated CAN routing region with a controlled-impedance path to the external transceiver and protection network. Keep the CAN interface routing short and isolate it from switching supplies and high-current motor outputs. Although the ADSP-21992 includes CAN protocol logic, the physical bus still depends on an appropriate transceiver, protection components, grounding strategy, and compliant network implementation.
合規資訊
RoHS and REACH compliance are identified in the comparison information. AEC-Q100 status is not stated and is recorded as not applicable because the device is not identified as an automotive-qualified variant.
