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NXP Semiconductors DSPB56374AFC
- Part No.:
- DSPB56374AFC
- Manufacturer:
- NXP Semiconductors
- Category:
- DSP (Digital Signal Processors)
- Package:
- 80-LQFP
- Datasheet:
-
DSPB56374AFC.pdf
- Description:
- IC DSP 24BIT 150MHZ 80-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,154
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Product details
Overview
DSPB56374AFC from Freescale Semiconductor is a 24-bit programmable digital signal processor (DSP) built on the DSP56300 core architecture, operating at 150 MHz with 150 MIPS performance, 6K×24-bit X/Y data RAM, and integrated Enhanced Serial Audio Interface (ESAI) for multi-channel audio I/O. It targets real-time digital audio processing in automotive infotainment, professional audio mixers, and acoustic equalization systems.
For engineers reviewing the DSPB56374AFC datasheet, DSPB56374AFC pinout, DSPB56374AFC application, or DSPB56374AFC equivalent, key selection criteria include ESAI channel count (up to 4 receivers/6 transmitters), 5 V-tolerant GPIO capability (20 pins in 52-pin LQFP), PLL clock flexibility (1–255× multiplication), 1.25 V core / 3.3 V I/O supply separation, and OnCE/JTAG debug support.
Technical Context
The DSPB56374AFC implements the DSP56300 instruction-set-compatible 24-bit core with dual 56-bit accumulators, 24×24-bit MAC unit, and 56-bit barrel shifter. Its memory subsystem includes 20K×24-bit program ROM, 6K×24-bit program RAM, and configurable X/Y data RAM/ROM banks controlled by MSW bits.
It integrates three major peripheral domains: ESAI (supporting I2S, AC97, Sony protocols), SHI (dual-mode SPI/I²C with 10-word FIFO), and triple timer/WDT modules. All unused peripheral pins are reconfigurable as GPIO-20 pins available in the 52-pin LQFP package, each with internal pull-up/pull-down and 5 V tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | DSP56300 24-bit fixed-point core, object-code compatible with 56K family |
| Performance | 150 MIPS at 150 MHz internal clock; enables real-time execution of complex FIR/IIR filters and FFTs |
| On-chip Memory | 6K×24-bit X RAM + 6K×24-bit Y RAM + 20K×24-bit program ROM + 6K×24-bit program RAM |
| ESAI Interface | 4 receiver / 6 transmitter channels; supports I2S, AC97, Sony, network modes; not available in 52-pin package per datasheet note |
| Supply Voltages | 1.25 V core (CORE_VDD), 3.3 V I/O (IO_VDD); PLL rails (PLLD/PLLA/PLLP_VDD) require dedicated decoupling |
| Package & Pins | 52-pin LQFP; 20 GPIO-capable pins (MODx/IRQx, PHx, PCx groups), all 5 V tolerant |
| Debug Support | JTAG IEEE 1149.1 boundary scan + OnCE hardware/software debug interface |
Pinout & Package
Package: 52-pin LQFP (10 mm × 10 mm, 0.65 mm pitch), RoHS-compliant, thermal pad exposed on bottom.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RESET | Active-low Schmitt-trigger reset input | Must be asserted during power-up; latches MODA–MODD mode bits on de-assertion; 5 V tolerant |
| PINIT/NMI | PLL init / nonmaskable interrupt input | Determines PLL enable state at reset; functions as edge-triggered NMI during operation; 5 V tolerant |
| EXTAL | External clock/crystal input | Drives internal PLL clock generator; requires stable 1.25–150 MHz source; no internal oscillator bypass |
| MODA/IRQA–MODD/IRQD | Mode select / interrupt request inputs | Select one of 16 boot modes; configurable as maskable interrupts or GPIO; all 5 V tolerant |
| PC0–PC7, PH0–PH4 | Multi-function GPIO terminals | 20 total GPIO pins in 52-pin package; individually programmable input/output/disconnected; internal pull-up/down |
Key Features
| Feature | Design Value |
|---|---|
| ESAI Audio Interface | Configurable serial audio engine supporting up to 4 receivers and 6 transmitters with protocol agility (I2S/AC97/Sony) |
| SHI Dual-Protocol Host Interface | SPI or I²C selectable via configuration; 10-word receive FIFO reduces CPU overhead in host-controlled audio system updates |
| Power-Optimized Clock System | Programmable PLL with 1–255× multiplication, predivider (1–31), and output dividers (1/2/4) enables low-jitter, noise-aware clock synthesis |
| Memory Flexibility | MSW register controls X/Y data RAM/ROM partitioning (e.g., 6K/6K or 10K/4K), enabling dynamic allocation for algorithm buffers vs. coefficient tables |
| Robust Debug Infrastructure | OnCE + JTAG provides real-time trace, breakpoint, and memory inspection without halting real-time audio streams |
Applications
| Automotive Infotainment Head Unit | Professional Audio Mixer |
|---|---|
|
Use Scenario: Real-time multi-zone audio processing with surround sound decoding, parametric EQ, and speaker time-alignment. IC Role / Device Role / Timing Role: Primary audio DSP executing FIR-based room correction and dynamic range compression at 96 kHz sample rate. Use Value: 150 MIPS throughput and dual 56-bit accumulators enable concurrent 64-band EQ + 8-channel delay compensation within one frame. |
Use Scenario: Low-latency mixing of 16 analog input channels digitized via external ADCs, with real-time effects routing and monitor send processing. IC Role / Device Role / Timing Role: Central audio stream processor interfacing to multiple ESAI receivers/transmitters and SHI-configured control peripherals. Use Value: 4-receiver ESAI handles simultaneous AES/EBU, S/PDIF, and I2S inputs; SHI manages potentiometer and encoder feedback without CPU polling. |
| Home Theater AV Receiver | Acoustic Measurement System |
|
Use Scenario: Dolby Atmos and DTS:X object-based audio rendering with beamforming for front height speakers and subwoofer management. IC Role / Device Role / Timing Role: Dedicated DSP coprocessor handling spatial audio math, crossover filtering, and bass management in parallel with main controller. Use Value: 20K×24-bit ROM stores optimized filter coefficients; 6K×24-bit X/Y RAM buffers multi-channel impulse responses for real-time convolution. |
Use Scenario: Portable handheld analyzer capturing impulse response, THD+N, and frequency sweep data from loudspeakers and rooms. IC Role / Device Role / Timing Role: Standalone measurement engine performing real-time FFT, spectral averaging, and calibrated level detection using internal ADC/DAC interfaces. Use Value: Triple timer module synchronizes acquisition windows; watchdog ensures deterministic recovery from buffer overflow during long sweeps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADSP-21369 | 32-bit SHARC core, 400 MHz, 2.4 GFLOPS; lacks native ESAI but offers SPORTs + SPI/I²C | Better suited for floating-point audio algorithms (e.g., nonlinear modeling), less optimized for I2S/AC97 protocol stack | Choose ADSP-21369 when floating-point precision or higher compute density is required over protocol-native audio I/O. |
| DSP56367 | Same DSP56300 core, 100 MHz, 100 MIPS; 48-pin LQFP; only 2 ESAI receivers / 4 transmitters; no ESAI_1 | Lower channel count and reduced memory (4K×24 program RAM) limits multi-stream audio routing depth | Choose DSP56367 for cost-sensitive, lower-channel-count audio endpoints where 150 MIPS headroom is unnecessary. |
Compared with DSPB56374AFC, ADSP-21369 delivers superior floating-point throughput but requires external protocol translation for AC97/I2S, while DSP56367 offers pin-compatible footprint and software compatibility at reduced performance and I/O scale-making it suitable for derivative designs with relaxed audio channel requirements.
Availability
DSPB56374AFC is available at Aetrix Electronics and suitable for automotive infotainment, professional audio equipment, and acoustic test instrumentation requiring stable component supply across extended product lifecycles.
Supply support for DSPB56374AFC 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
Freescale Semiconductor (now part of NXP Semiconductors) is a fabless semiconductor company specializing in microcontrollers, analog, and digital signal processors for automotive, industrial, and consumer applications.
The DSP56374 product line was designed specifically for high-fidelity, low-latency digital audio signal processing in resource-constrained embedded systems with stringent real-time I/O requirements.
FAQ
What is the maximum operating frequency of the DSPB56374AFC core?
The DSPB56374AFC core operates at a maximum internal clock frequency of 150 MHz, delivering 150 million instructions per second (MIPS). This frequency is generated internally via the integrated PLL from an external EXTAL source, and the core logic supply (CORE_VDD) must be stabilized at 1.25 V to sustain this performance level. The DSPB56374AFC datasheet specifies timing margins and voltage tolerances required to maintain reliable operation at full speed.
Does the DSPB56374AFC support I²C communication natively?
Yes, the DSPB56374AFC supports I²C natively through its Serial Host Interface (SHI), which is configurable for either SPI or I²C protocol operation. In I²C mode, the SHI provides SCL and SDA signals with open-drain outputs, internal pull-up resistors, and full compliance with standard-mode (100 kbps) and fast-mode (400 kbps) I²C specifications. The DSPB56374AFC datasheet confirms tri-state behavior during reset and 5 V tolerance on both lines.
How many GPIO pins are available on the DSPB56374AFC in the 52-pin LQFP package?
The DSPB56374AFC provides 20 GPIO-capable pins in the 52-pin LQFP package, drawn from MODA/IRQA–MODD/IRQD, PH0–PH4, and PC0–PC7 signal groups. Each pin is individually configurable as input, output, or high-impedance disconnected, with internal pull-up or pull-down resistors. All 20 pins are explicitly documented as 5 V tolerant in the DSPB56374AFC datasheet's signal descriptions and DC electrical characteristics.
Is the Enhanced Serial Audio Interface (ESAI) available in the 52-pin package of the DSPB56374AFC?
No, the ESAI_1 interface is explicitly excluded from the 52-pin package per the DSPB56374AFC datasheet (Section 2.3, footnote *). However, the primary ESAI interface-with up to 4 receivers and 6 transmitters-is fully functional in the 52-pin variant and supports I2S, Sony, AC97, and network protocols. ESAI pin assignments (e.g., HCKR, FSR, SDO4) are present and usable; only ESAI_1 (dedicated Port E signals) is omitted.
What debug interfaces does the DSPB56374AFC support for firmware development?
The DSPB56374AFC supports two complementary debug interfaces: IEEE 1149.1-compliant JTAG for boundary-scan testing and low-level register access, and the OnCE (On-Chip Emulation) module for real-time hardware/software debugging-including breakpoints, watchpoints, memory inspection, and instruction trace-without disrupting real-time audio processing. Both interfaces are electrically and functionally validated in the DSPB56374AFC datasheet's timing and signal grouping sections.
DSPB56374AFC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- DSP56K/Symphony
- Package/Case:
- 80-LQFP
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- 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:
- 80-LQFP (14x14)
DSPB56374AFC FAQ
1.How can I place an order for DSPB56374AFC through Aetrix?
Please submit a Request for Quotation (RFQ) for DSPB56374AFC 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 DSPB56374AFC reliable?
The price and inventory of DSPB56374AFC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DSPB56374AFC is usually 5 days.
3.What payment methods are accepted for DSPB56374AFC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DSPB56374AFC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DSPB56374AFC?
DSPB56374AFC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DSPB56374AFC 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 DSPB56374AFC?
For technical support, including DSPB56374AFC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DSPB56374AFC requirements.
6.How does Aetrix verify that DSPB56374AFC is sourced from the original manufacturer or authorized distributors?
All DSPB56374AFC 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 DSPB56374AFC meets industry standards.
7.What is the process for return or replacement of DSPB56374AFC?
All DSPB56374AFC units undergo pre-shipment inspection (PSI). If there is an issue with DSPB56374AFC, 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 DSPB56374AFC part is unused and in its original packaging.
Return procedure for DSPB56374AFC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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