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NXP Semiconductors DSPB56374AEC
- Part No.:
- DSPB56374AEC
- Manufacturer:
- NXP Semiconductors
- Category:
- DSP (Digital Signal Processors)
- Package:
- 52-LQFP
- Datasheet:
-
DSPB56374AEC.pdf
- Description:
- IC DSP 24BIT 150MHZ 52-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,228
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Product details
Overview
DSPB56374AEC from NXP Semiconductors (formerly Freescale) is a 24-bit programmable digital signal processor (DSP) optimized for real-time audio processing. It features a 150 MHz internal clock delivering 150 MIPS, 24×24-bit MAC with 56-bit barrel shifter, six-channel DMA, and dual 6K×24-bit X/Y data RAM blocks. It supports sound field processing and acoustic equalization in professional audio systems.
For engineers reviewing the DSPB56374AEC datasheet, DSPB56374AEC pinout, DSPB56374AEC application, or DSPB56374AEC equivalent, key selection criteria include ESAI interface channel count, 5 V-tolerant GPIO capability, PLL configuration flexibility, and 80-pin LQFP package compatibility with legacy DSP56300-family designs.
Technical Context
The DSPB56374AEC implements the DSP56300 core architecture with object-code compatibility to the 56K family. Its memory subsystem includes 20K×24-bit program/Bootstrap ROM, 6K×24-bit program RAM, and configurable X/Y data RAM/ROM banks controlled via MSW bits.
It integrates two independent Enhanced Serial Audio Interfaces (ESAI and ESAI_1), each supporting I2S, AC97, and Sony protocols with up to 6 transmitters and 4 receivers. The SHI supports both SPI and I2C modes with 10-word FIFO and three noise-reduction filter settings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | DSP56300 24-bit fixed-point core, 150 MIPS at 150 MHz internal clock |
| MAC Unit | 24×24-bit multiplier-accumulator with 56-bit barrel shifter and dual 56-bit accumulators |
| On-chip Memory | 20K×24-bit ROM (program/bootstrap), 6K×24-bit program RAM, 6K×24-bit X/Y data RAM, 4K×24-bit X/Y data ROM |
| ESAI Interface | Dual ESAI modules: ESAI (12 pins, full 80-pin package) and ESAI_1 (12 pins, 80-pin only); supports I2S, AC97, Sony, network protocols |
| GPIO Count | Up to 47 programmable GPIOs on 80-pin LQFP; 5 V-tolerant on MODx/IRx, SCL, SDA, HA0/HA2, RESET, EXTAL, and selected ESAI/SHI pins |
| Power Supply | 1.25 V core (CORE_VDD/PLLD_VDD), 3.3 V I/O (IO_VDD), with dedicated PLL power rails (PLLA_VDD/PLLP_VDD) |
| Package | 80-pin LQFP (12×12 mm, 0.5 mm pitch); DSPB56374AEC is the 80-pin variant with ESAI_1 enabled |
Pinout & Package
Package: 80-pin LQFP (12 mm × 12 mm, 0.5 mm pitch), RoHS-compliant, thermal pad exposed on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EXTAL | External Clock Input | Accepts 1–50 MHz crystal or external clock; drives internal PLL; 5 V tolerant |
| RESET | Active-Low Reset Input | Schmitt-triggered, internally pulled up; must be asserted during power-up with stable EXTAL |
| MODA/IRQA – MODD/IRQD | Mode Select / Interrupt Inputs | Four 5 V-tolerant pins selecting one of 16 boot modes; double-function as maskable interrupt sources or GPIO |
| HCKR / HCKT | ESAI High-Frequency Clock | Configurable as input (receiver/transmitter clock source) or output (sample clock for external DAC/ADC) |
| FSR / FST | ESAI Frame Sync | Bidirectional frame sync signals; support synchronous/asynchronous operation and serial flag modes per RCCR/TCCR register control |
| SCKR / SCKT | ESAI Serial Clock | Bidirectional bit clocks; used by all enabled receivers/transmitters in async mode, or as serial flags (OF0/IF0, OF1/IF1) in sync mode |
| SDI0–SDI1, SDO4–SDO5 | ESAI Data I/O | Five dedicated serial data paths: two inputs (SDI0/SDI1), three outputs (SDO4/SDO5 + one additional SDO); support TDM, I2S, AC97 framing |
| SCL / SDA / HA0 / HA2 | I²C Host Interface | Standard I²C bus signals with slave address bits HA0/HA2; Schmitt-trigger inputs; internal pull-ups; 5 V tolerant |
| PINIT/NMI | PLL Init / NMI Input | Latches PLL enable state at reset; serves as edge-triggered nonmaskable interrupt during runtime; 5 V tolerant |
Key Features
| Feature | Design Value |
|---|---|
| ESAI Dual-Interface Support | Independent ESAI and ESAI_1 modules enable simultaneous multi-zone audio routing (e.g., front/rear/center channels) without external multiplexing |
| Memory Switching Flexibility | MSW1/MSW0 bits allow dynamic reconfiguration of X/Y data RAM/ROM allocation (e.g., 6K/6K, 10K/4K, or 8K/4K) to match algorithm memory footprint |
| 5 V-Tolerant Mixed-Signal I/O | 20+ pins-including MODx, RESET, EXTAL, SCL, SDA, HA0/HA2-interface directly with 5 V logic without level shifters, simplifying mixed-voltage system design |
| Low-Power Operation Modes | STOP and WAIT standby modes reduce dynamic power; fully static CMOS core operates down to DC, enabling ultra-low idle current in battery-backed audio systems |
| Debug & Trace Infrastructure | OnCE port and JTAG (IEEE 1149.1) support real-time hardware/software debugging, instruction tracing, and boundary scan testing across production batches |
Applications
| Professional Audio Mixing Console | Automotive Infotainment Head Unit |
|---|---|
|
Use Scenario: Real-time multi-channel mixing, dynamic EQ, and spatial audio rendering for live sound reinforcement. IC Role / Device Role / Timing Role: Primary audio processing engine executing low-latency FIR/IIR filters, delay lines, and matrix mixers with deterministic 150 MIPS throughput. Use Value: Dual ESAI interfaces drive separate analog output stages (main monitor + stage wedge) while SHI configures external CODECs, eliminating inter-processor communication bottlenecks. |
Use Scenario: Integrated cabin audio processing including ANC (active noise cancellation), voice enhancement, and multi-zone playback. IC Role / Device Role / Timing Role: Central DSP handling concurrent audio streams from microphone arrays, Bluetooth A2DP, and HDMI ARC with synchronized sample-rate conversion. Use Value: 5 V-tolerant GPIOs interface directly with automotive body-control MCU I/O; STOP mode enables <10 µA sleep current during ignition-off periods. |
| Studio-Grade Digital Effects Processor | High-End Home Theater AV Receiver |
|
Use Scenario: Rack-mount hardware effects unit performing convolution reverb, pitch shifting, and harmonic synthesis. IC Role / Device Role / Timing Role: Dedicated DSP offloading CPU-intensive algorithms from host ARM controller; uses ESAI_1 for auxiliary I/O expansion (e.g., AES/EBU interface). Use Value: 20K×24-bit Bootstrap ROM stores factory calibration data and firmware patches; PROM patching mechanism enables field-upgradable algorithms without reflashing main program memory. |
Use Scenario: 9.2-channel surround sound decoding and room correction (e.g., Audyssey MultEQ) in premium home theater receivers. IC Role / Device Role / Timing Role: Co-processor managing real-time FIR-based room EQ, speaker time-alignment, and bass management alongside main SoC. Use Value: Six-channel DMA enables zero-CPU-overhead streaming of 24-bit/192 kHz audio across eight ESAI data lines; SHI I²C controls HDMI CEC and display status LEDs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC56F8323 | 16-bit DSC core (not 24-bit), 60 MIPS, no ESAI, single SPI/I²C, 48-pin LQFP | Limited to basic audio control (volume, tone) - lacks multi-channel real-time processing capability | Select only for cost-sensitive, low-channel-count applications where 24-bit precision and ESAI bandwidth are unnecessary |
| ADSP-21489 | SHARC 32-bit floating-point core, 400 MHz, 2500 MFLOPS, dual 24-bit ESAI, 100-pin CSPBGA | Higher precision for complex modeling (e.g., guitar amp simulation), but requires BGA assembly and higher power budget | Choose when floating-point arithmetic, >150 MIPS throughput, or >8-channel synchronous audio I/O is required |
Compared with MC56F8323 and ADSP-21489, the DSPB56374AEC delivers optimal balance of 24-bit fixed-point precision, dual ESAI bandwidth, 5 V-tolerant I/O, and LQFP manufacturability for mid-tier professional and automotive audio systems requiring deterministic real-time performance without floating-point overhead.
Availability
DSPB56374AEC is available at Aetrix Electronics and suitable for professional audio mixing consoles, automotive infotainment head units, and studio-grade digital effects processors requiring stable component supply and long-term industrial availability.
Supply support for DSPB56374AEC 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
NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with roots in Freescale's DSP heritage.
The DSPB56374AEC belongs to the DSP56300 family, designed specifically for high-fidelity, low-latency digital audio signal processing in resource-constrained embedded systems where deterministic timing and mixed-signal integration are critical.
FAQ
What is the maximum operating frequency of the DSPB56374AEC core?
The DSPB56374AEC core runs at a fixed internal clock frequency of 150 MHz, delivering 150 million instructions per second (MIPS). This frequency is generated by the on-chip PLL using an external crystal or clock applied to the EXTAL pin, and cannot be overclocked beyond the specified 150 MHz rating per the Rev. 4.2 datasheet.
Does the DSPB56374AEC support I²S protocol on its ESAI interface?
Yes, the DSPB56374AEC supports I²S protocol natively on both ESAI and ESAI_1 modules. Each ESAI block can be configured as master or slave and handles standard I²S timing, left-justified, right-justified, and PCM formats. Configuration is done via the ESAI control registers (RCCR, TCCR, SAICR) as documented in the DSP56374UM/D user manual.
Is the DSPB56374AEC pin-compatible with other devices in the DSP56300 family?
The DSPB56374AEC shares the same 80-pin LQFP footprint and core signal mapping with the DSP56374 series, but is not universally pin-compatible with earlier 563xx variants due to differences in peripheral pin allocation (e.g., ESAI_1 occupies pins not present on 52-pin versions). Board layout reuse is feasible only when matching the exact 80-pin package and verifying signal routing against the DSPB56374AEC-specific pinout table.
What power supply voltages does the DSPB56374AEC require?
The DSPB56374AEC requires three distinct supply domains: 1.25 V for CORE_VDD and PLLD_VDD (core logic and PLL digital), 3.3 V for IO_VDD (ESAI, SHI, GPIO, timers), and separate 3.3 V rails for PLLA_VDD and PLLP_VDD (analog PLL sections). Each domain needs dedicated low-ESR decoupling capacitors as specified in Section 4 of the DSP56374 datasheet.
Can unused ESAI pins on the DSPB56374AEC be repurposed as general-purpose I/O?
Yes, unused ESAI pins (e.g., PC0–PC7, PH0–PH4) can be individually configured as GPIO through the corresponding port control registers. Each pin supports input, output, or high-impedance disconnect states, and many-including PC1, PC4, PC0, PC3-are 5 V tolerant with internal pull-down or pull-up resistors, enabling direct interfacing with legacy 5 V peripherals without external level shifters.
DSPB56374AEC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- DSP56K/Symphony
- Package/Case:
- 52-LQFP
- Packaging:
- Tray
- Product Status:
- Obsolete
- Type:
- Audio Processor
- Interface:
- Host Interface, I2C, SAI, SPI
- Clock Rate:
- 150MHz
- Non-Volatile Memory:
- ROM (84kB)
- On-Chip RAM:
- 54kB
- Voltage - I/O:
- 3.30V
- Voltage - Core:
- 1.25V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 52-TQFP (10x10)
DSPB56374AEC FAQ
1.How can I place an order for DSPB56374AEC through Aetrix?
Please submit a Request for Quotation (RFQ) for DSPB56374AEC 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 DSPB56374AEC reliable?
The price and inventory of DSPB56374AEC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSPB56374AEC is usually 5 days.
3.What payment methods are accepted for DSPB56374AEC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSPB56374AEC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSPB56374AEC?
DSPB56374AEC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSPB56374AEC 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 DSPB56374AEC?
For technical support, including DSPB56374AEC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSPB56374AEC requirements.
6.How does Aetrix verify that DSPB56374AEC is sourced from the original manufacturer or authorized distributors?
All DSPB56374AEC 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 DSPB56374AEC meets industry standards.
7.What is the process for return or replacement of DSPB56374AEC?
All DSPB56374AEC units undergo pre-shipment inspection (PSI). If there is an issue with DSPB56374AEC, 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 DSPB56374AEC part is unused and in its original packaging.
Return procedure for DSPB56374AEC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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