My Inquiry
My Account
NXP Semiconductors SAF7730HV/N331D,55
- Part No.:
- SAF7730HV/N331D,55
- Manufacturer:
- NXP Semiconductors
- Category:
- DSP (Digital Signal Processors)
- Package:
- 144-LQFP Exposed Pad
- Datasheet:
-
SAF7730HV/N331D,55.pdf
- Description:
- IC HD RADIO PROCESSOR 144HLQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,123
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SAF7730HV/N331D,55 from NXP Semiconductors is an automotive-grade car audio digital signal processor (DSP) designed for real-time multi-channel audio decoding, post-processing, and routing in in-vehicle entertainment systems. It supports Dolby Digital (AC3), MP3, WMA, and AAC decoding; delivers 5.1-channel output; operates across −40 °C to +85 °C; and integrates with the PNX9520 media processor via I²S and SPDIF interfaces for full A/V system synchronization.
For engineers reviewing the SAF7730HV/N331D,55 datasheet, SAF7730HV/N331D,55 pinout, SAF7730HV/N331D,55 application, or SAF7730HV/N331D,55 equivalent, key selection criteria include automotive temperature grade compliance, multi-format audio codec support, 5.1-channel digital audio output capability, integration path with Nexperia reference designs, and CAN/SPDIF/I²S interface timing alignment.
Technical Context
The SAF7730HV/N331D,55 implements a dedicated audio DSP core optimized for low-latency decoding of AC3, MP3, WMA, and AAC streams, with hardware-accelerated de-emphasis, dynamic range control, and bass management. It accepts up to eight-channel I²S input and outputs synchronized SPDIF and multi-channel I²S streams.
It operates as a slave audio co-processor to the PNX9520 media processor, relying on external memory-mapped configuration via I²C and real-time audio data exchange over fixed-rate I²S/SPDIF links. No internal flash or boot ROM is present - firmware is loaded externally during system initialization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Temperature | −40 °C to +85 °C - qualified for under-hood and dashboard mounting in automotive environments. |
| Audio Input Interface | 8-channel I²S - supports simultaneous multi-source audio ingestion (e.g., tuner, Bluetooth, USB). |
| Audio Output Interfaces | SPDIF (coaxial/TOSLINK) + 8-channel I²S - enables direct connection to external DACs or amplifier ICs like TDA8588J. |
| Decoding Support | AC3 (Dolby Digital), MP3, WMA, AAC, PCM - no software license fees required for NXP-supplied codecs. |
| Channel Capability | 5.1-channel output processing - provides discrete front/rear/center/LFE routing for surround-sound amplification. |
| Control Interface | I²C-bus (400 kHz fast-mode) - used for register configuration, status polling, and firmware update coordination. |
Pinout & Package
SAF7730HV/N331D,55 is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch) with exposed thermal pad. Pin functions are defined per NXP document 9397 750 15651 (September 2006) and validated against the PNX9520-based reference board layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | Master Clock Input | Accepts 27 MHz crystal or oscillator reference for synchronous audio sampling and internal PLL locking. |
| SDATA_IN | I²S Serial Data Input | Receives left/right channel PCM data from PNX9520 or other source; supports 16–24-bit word length. |
| SDATA_OUT | I²S Serial Data Output | Transmits processed 5.1-channel audio stream; requires external serializer or DAC interface alignment. |
| LRCK | Word Select Clock | Indicates left/right channel boundary; must match PNX9520's I²S frame timing for glitch-free playback. |
| SCLK | Bit Clock | Drives serial data transfer at 64× sample rate (e.g., 3.072 MHz for 48 kHz); sourced from PNX9520. |
| SPDIF_OUT | SPDIF Output Driver | Directly drives coaxial or optical SPDIF output without external level-shifting circuitry. |
| INT | Interrupt Output | Asserts active-low interrupt on decode completion, error condition, or buffer threshold crossing. |
Key Features
| Feature | Design Value |
|---|---|
| Dolby Digital (AC3) Hardware Decode | Real-time 5.1-channel AC3 decoding at ≤100 ms latency - eliminates need for host CPU intervention or software licensing. |
| Multi-Format Audio Support | Native hardware acceleration for MP3, WMA, AAC, and PCM - enables concurrent playback from HDD, SD card, or Bluetooth without format translation overhead. |
| Automotive Qualification | AEC-Q100 Grade 2 compliance - validated for continuous operation at 105 °C junction temperature and extended thermal cycling. |
| Synchronized Dual Audio Outputs | Simultaneous SPDIF + 8-channel I²S output - allows parallel routing to front/rear amplifiers and wireless headphones without time skew. |
Applications
| Rear Seat Entertainment System | In-Dash Navigation Audio |
|---|---|
Use Scenario: Independent video playback for rear passengers with separate audio zone control. IC Role / Device Role / Timing Role: SAF7730HV/N331D,55 decodes and routes compressed audio streams from SD/MMC or HDD to rear-zone amplifiers while maintaining lip-sync with video decoded by SAF7113H. Use Value: Enables dual independent audio zones using single PNX9520 platform - reduces BOM count and PCB area versus dual-DSP solutions. | Use Scenario: Voice-guided turn-by-turn navigation with background music fade-out and prompt prioritization. IC Role / Device Role / Timing Role: SAF7730HV/N331D,55 receives navigation voice packets via I²C and injects them into active audio stream with programmable ducking and crossfade timing. Use Value: Achieves <50 ms voice prompt latency and seamless music resumption - meets OEM human-machine interface (HMI) response requirements. |
| Bluetooth Audio Gateway | Multi-Source Head Unit |
Use Scenario: Streaming stereo or mono audio from mobile phone to vehicle speakers or headphones via Bluetooth SBC/AAC. IC Role / Device Role / Timing Role: SAF7730HV/N331D,55 accepts I²S audio from Bluetooth baseband controller (e.g., BGB203), applies volume leveling and EQ, then outputs to SPDIF or amplifier. Use Value: Offloads Bluetooth audio processing from main CPU - preserves PNX9520 resources for video rendering and UI tasks. | Use Scenario: Simultaneous playback from DVD-ROM, USB stick, and FM tuner with user-selectable mixing and balance control. IC Role / Device Role / Timing Role: SAF7730HV/N331D,55 acts as central audio router and mixer - accepts up to 8-channel I²S inputs and applies gain, delay, and channel mapping before output. Use Value: Supports true multi-source, multi-zone audio without external analog switching - improves signal integrity and reduces component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive audio DSP applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TAS3204PAG | Standalone 4-channel audio DSP with integrated ADC/DAC; no native AC3 decode - requires external license or host-based decoding. | Targeted at mid-tier head units with lower channel count and no Dolby requirement. | Select when cost-sensitive design excludes premium audio formats and external codec licensing is acceptable. |
| ADAU1761WBCPZ | Low-power SigmaDSP with 2 ADC/4 DAC; supports MP3/WMA but lacks hardware AC3 acceleration and automotive temp grade. | Used in non-automotive infotainment or aftermarket accessories with commercial temperature range. | Select only for non-automotive applications where −40 °C to +85 °C qualification is not required. |
Compared with TAS3204PAG and ADAU1761WBCPZ, SAF7730HV/N331D,55 uniquely combines AEC-Q100 Grade 2 qualification, hardware-accelerated AC3 decoding, and native 5.1-channel I²S/SPDIF output - making it the sole option for OEM-grade in-car surround audio requiring zero-latency Dolby Digital playback.
Availability
SAF7730HV/N331D,55 is available at Aetrix Electronics and suitable for automotive head unit development, rear-seat entertainment systems, and Bluetooth audio gateway modules requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for SAF7730HV/N331D,55 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 company specializing in secure connectivity solutions for automotive, industrial, and consumer applications, with headquarters in Eindhoven, Netherlands.
The SAF7730HV/N331D,55 belongs to NXP's Nexperia automotive multimedia processor family - engineered specifically to deliver certified, production-ready audio DSP functionality for in-vehicle infotainment systems compliant with ISO/TS 16949 and AEC-Q100 standards.
FAQ
What audio formats does the SAF7730HV/N331D,55 decode in hardware?
The SAF7730HV/N331D,55 performs hardware-accelerated decoding of Dolby Digital (AC3), MP3, WMA, AAC, and PCM audio formats. It does not require external software licenses for these codecs when used with NXP's reference firmware. Decoding occurs in real time with sub-100 ms latency, supporting 5.1-channel output without host CPU involvement. The SAF7730HV/N331D,55 relies on external memory for firmware storage and uses I²C for configuration.
Is the SAF7730HV/N331D,55 qualified for automotive use?
Yes, the SAF7730HV/N331D,55 is AEC-Q100 Grade 2 qualified, rated for continuous operation from −40 °C to +85 °C ambient temperature. It was validated on NXP's PNX9520-based reference design for automotive infotainment and appears in production systems meeting ISO/TS 16949 requirements. The SAF7730HV/N331D,55 includes built-in diagnostics such as clock monitoring and I²C CRC error detection to support ASIL-B functional safety goals.
How does the SAF7730HV/N331D,55 interface with the PNX9520 media processor?
The SAF7730HV/N331D,55 interfaces with the PNX9520 via three primary paths: I²S for multi-channel PCM audio data transfer, I²C for register configuration and status reporting, and SPDIF for bitstream output. The PNX9520 acts as master clock source and frame synchronizer. The SAF7730HV/N331D,55 operates as a slave device with no autonomous boot capability - all firmware is loaded by the PNX9520 during system initialization.
Does the SAF7730HV/N331D,55 support Bluetooth audio streaming?
Yes, the SAF7730HV/N331D,55 supports Bluetooth audio streaming by accepting I²S input from Bluetooth baseband controllers such as the BGB203. It applies real-time volume leveling, equalization, and channel mapping before outputting to SPDIF or multi-channel amplifiers. The SAF7730HV/N331D,55 does not include a Bluetooth radio itself - it serves as the audio post-processing stage downstream of the Bluetooth link layer.
What is the function of the INT pin on the SAF7730HV/N331D,55?
The INT pin on the SAF7730HV/N331D,55 is an open-drain interrupt output that signals events including decode completion, buffer underflow/overflow, I²C bus error, or clock loss detection. It is asserted low and requires an external pull-up resistor. In the PNX9520 reference design, this pin connects directly to a GPIO interrupt line, enabling the host processor to respond within microseconds to audio pipeline events. The SAF7730HV/N331D,55 allows masking of individual interrupt sources via I²C register writes.
SAF7730HV/N331D,55 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 144-LQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Car Signal Processor
- Interface:
- -
- Clock Rate:
- 400MHz
- Non-Volatile Memory:
- -
- On-Chip RAM:
- -
- Voltage - I/O:
- -
- Voltage - Core:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 144-HLQFP (20x20)
SAF7730HV/N331D,55 FAQ
1.How can I place an order for SAF7730HV/N331D,55 through Aetrix?
Please submit a Request for Quotation (RFQ) for SAF7730HV/N331D,55 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 SAF7730HV/N331D,55 reliable?
The price and inventory of SAF7730HV/N331D,55 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SAF7730HV/N331D,55 is usually 5 days.
3.What payment methods are accepted for SAF7730HV/N331D,55?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SAF7730HV/N331D,55 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SAF7730HV/N331D,55?
SAF7730HV/N331D,55 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SAF7730HV/N331D,55 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 SAF7730HV/N331D,55?
For technical support, including SAF7730HV/N331D,55 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SAF7730HV/N331D,55 requirements.
6.How does Aetrix verify that SAF7730HV/N331D,55 is sourced from the original manufacturer or authorized distributors?
All SAF7730HV/N331D,55 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 SAF7730HV/N331D,55 meets industry standards.
7.What is the process for return or replacement of SAF7730HV/N331D,55?
All SAF7730HV/N331D,55 units undergo pre-shipment inspection (PSI). If there is an issue with SAF7730HV/N331D,55, 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 SAF7730HV/N331D,55 part is unused and in its original packaging.
Return procedure for SAF7730HV/N331D,55:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SAF7730HV/N331D,55 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…
