DSPB56720CAG - 200MHz Multi-Core Audio DSP | NXP | 144-LQFP
MPN： DSPB56720CAG ✗ 停產DSPB56720CAG 概覽
A digital signal processor (DSP) is a specialized microprocessor architecture optimized for real-time mathematical operations such as FIR/IIR filtering, FFTs, and sample-accurate audio processing. The DSPB56720CAG belongs to the NXP Symphony DSP5672x family of programmable CMOS DSPs, positioned within the broader hierarchy of embedded processors -> digital signal processors -> audio DSPs, designed specifically to support multiple high-definition (HD) audio decoding standards in consumer and professional audio products.
Key features include dual-core processing at 200MHz for demanding HD audio codec stacks, 744kB of on-chip RAM minimizing external memory traffic, multiple SAI ports enabling multi-channel I2S/TDM audio streams, and a gull-wing 144-lead LQFP package that simplifies inspection and rework compared to BGA alternatives. The industrial temperature grade supports a broad range of deployment environments.
Architecturally, the DSP56720 combines Scipro-based DSP cores with a rich peripheral set, allowing simultaneous decode of multiple HD audio channels while performing post-processing such as bass management, room equalization, and Dolby/DTS-class algorithms. On-chip RAM partitions code and data across cores to reduce bus contention, and the host interface permits external application processors to load firmware and stream control commands.
Typical applications include AV receivers, soundbars, digital audio preamplifiers, professional mixing consoles, and automotive infotainment amplifiers where multi-channel HD audio decode is required.
Important design consideration: NXP has marked the DSPB56720CAG as End of Life (EOL) on its official product page. New designs should evaluate family variants such as DSPB56721 or secure last-time-buy stock, and firmware toolchain availability should be confirmed before committing to new production.
直接替換替代品，適用於 DSPB56720CAG — 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。
此系列的變體
與下列產品可直接替換的同系列型號： DSPB56720CAG （相同外形與佔位） — 差異在於 Interfaces, Product Type, Temperature Grade.
DSPB56721CAG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPB56720AG
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →DSPB56724CAG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPB56721AG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPB56723CAG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
DSPB56720CAG 規格
| Product Type | Audio Processor DSP (Symphony DSP56720) |
| Core Frequency | 200 MHz |
| Number of Cores | Multi-core (DSP5672x family) |
| On-Chip RAM | 744 kB |
| Non-Volatile Memory | External |
| Interfaces | Host Interface, I2C, SAI, SPI |
| 封裝 / 外殼 | 144-LQFP (20x20 mm) |
| Terminal Form | Gull Wing |
| Package Code | LFQFP, Square |
| Number of Terminals | 144 |
| 安裝類型 | Surface Mount |
| Temperature Grade | Industrial |
| Packaging | Tray |
| Process Technology | CMOS |
| 生命週期狀態 | End of Life (per NXP product page) |
DSPB56720CAG lfqfp, square 腳位配置指南
DSPB56720CAG（lfqfp, square 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： DSPB56720CAG.
請參閱 資料表 以查看完整腳位配置。
典型應用
DSPB56720CAG 適用於 6 應用s: AV Receivers, Soundbars, Professional Audio Consoles, Automotive Amplifiers (legacy), Digital Preamplifiers / Processors, Networked Audio / Installation Amps.
AV Receivers
The DSPB56720CAG fits AV receiver architectures because its 200MHz multi-core Symphony engine and 744kB on-chip RAM can simultaneously decode multiple HD audio standards while running bass management and room correction. SAI ports deliver multi-channel I2S/TDM streams to DACs, while the Host Interface lets the main SoC load firmware and issue control commands. Being EOL, new receiver designs should plan last-time-buy stock.
推薦
Soundbars
In soundbar platforms the DSPB56720CAG performs audio decode plus spatial processing in a single 200MHz multi-core device, reducing BOM count versus a general-purpose SoC plus separate DSP. Its 744kB on-chip RAM holds decode buffers and filter states locally, and multiple SAI ports drive several amplifier channels over TDM, simplifying board routing in the narrow soundbar enclosure typical of this product category.
推薦
Professional Audio Consoles
Digital mixing consoles benefit from the DSPB56720CAG's deterministic DSP cores for low-latency EQ, dynamics, and routing at 200MHz, with 744kB on-chip RAM minimizing external memory latency in the signal path. SPI and I2C handle fader/encoder control boards while SAI links multiple DSPs for expanded channel counts. Industrial temperature grade suits touring equipment exposed to variable environments, a common requirement in professional live-sound deployments.
推薦
Automotive Amplifiers (legacy)
Legacy automotive external amplifier platforms used Symphony DSPs for surround decode and speaker EQ. The DSPB56720CAG's multi-core 200MHz throughput handled HD decode plus per-channel DSP filters, and its SAI ports interfaced with automotive audio DACs. Note this device is industrial-grade and EOL, so new automotive designs must move to AEC-Q100 qualified audio DSPs rather than continuing on this part.
推薦
Digital Preamplifiers / Processors
High-end digital preamplifiers and processors use the DSPB56720CAG as the central audio engine: it accepts multi-channel streams over SAI, applies room EQ, crossovers, and volume control with 32-bit precision at 200MHz, and outputs to DAC stages. The 744kB on-chip RAM keeps filter coefficient sets resident, and the Host Interface connects to the front-panel controller for user preset switching and firmware updates.
推薦
Networked Audio / Installation Amps
Commercial installation amplifiers and networked audio endpoints leverage the DSPB56720CAG's I2C/SPI/Host interfaces for Ethernet-module integration while its cores run DSP loudspeaker processing and multiple decode streams. The 200MHz dual-core headroom supports Dante-class module companioning plus local processing, and industrial temperature rating suits 19-inch rack equipment. EOL status requires stock planning for service-replacement volumes in installed bases.
推薦
推薦產品摘要
工程參考資料，適用於 DSPB56720CAG — 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 | DSPB56721CAG | DSPB56720AG | DSPB56724CAG |
|---|---|---|---|---|
| Package | 144-LQFP (20x20 mm) | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same | 144-LQFP (20x20 mm) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Interfaces | Host Interface, I2C, SAI, SPI | Host Interface, I2C, SAI, SPI | Host Interface, I2C, SAI, SPI | Host Interface, I2C, SAI, SPI |
| Product Family | Symphony DSP56720 | Symphony DSP56721 | Symphony DSP56720 | Symphony DSP5672x |
主要差異化特點
- Purpose-built HD audio decode architecture (對比TMS320F28335)
- Gull-wing LQFP inspectability (對比BGA-packaged audio SoCs)
- Large on-chip RAM reduces external memory dependency (對比DSPB56721CAG)
設計說明
The DSPB56720CAG is EOL per NXP's official product page. For any design still using this part, execute a last-time-buy covering projected service lifetime plus attrition (typically 5-10 years of field service stock), and qualify a same-family variant such as DSPB56721 as a second source before existing stock depletes. Verify date codes on broker stock to avoid reclaimed or counterfeit units, which are common for EOL audio DSPs.
The DSP5672x family uses multiple supply rails (core and I/O) requiring sequenced power-up; follow the NXP DSP56720/21 datasheet power-supply sequencing section and implement reset supervision. Decouple each 144-LQFP supply pin group with 100nF ceramics placed within 2mm of the pin, plus bulk 10uF per rail. Confirm exact rail voltages and current figures against the datasheet electrical characteristics table before regulator selection.
For the 20x20mm 144-LQFP, route SAI audio clock lines away from the crystal and host-interface buses to minimize jitter-induced spurs in the audio band. Use a solid ground plane under the package and keep SAI traces length-matched within 5mm for multi-channel TDM integrity. Boot firmware resides in external non-volatile memory, so keep boot flash/SPI traces short and add series termination on host interface lines exceeding 50mm.
合規資訊
Compliance details not present in verified web data. Environmental quality information is referenced on the NXP product page (Environmental Quality section) but specific RoHS/REACH status must be confirmed there. Industrial temperature grade; no AEC-Q100 qualification found in data.
