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Texas Instruments DIX4192IPFBR
- Part No.:
- DIX4192IPFBR
- Manufacturer:
- Texas Instruments
- Category:
- Audio Special Purpose
- Package:
- 48-TQFP
- Datasheet:
-
DIX4192IPFBR.pdf
- Description:
- IC AUDIO TRANSCEIVER 48TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,213
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Product details
Overview
DIX4192IPFBR from Texas Instruments is a dual-function CMOS digital audio interface IC integrating a receiver (DIR) and transmitter (DIT) compliant with AES3, S/PDIF, IEC 60958, and EIAJ CP-1201 standards. It supports sampling rates up to 216 kHz, features four differential line receivers and one differential line driver, and operates from 1.8-V core and 3.3-V I/O supplies - enabling use in professional audio routers, A/V receivers, and broadcast studio equipment.
For engineers reviewing the DIX4192IPFBR datasheet, DIX4192IPFBR pinout, DIX4192IPFBR application, or DIX4192IPFBR equivalent, key selection considerations include DIR PLL lock range (20–216 kHz), recovered clock jitter (250 ps RMS), dual audio serial ports (A/B) supporting 24-bit data, I²C/SPI host interface flexibility, and TQFP-48 package compatibility with SRC4382/SRC4392.
Technical Context
The DIX4192IPFBR implements a fully integrated DIR/DIT architecture with independent PLL-based clock recovery and generation. Its DIR block includes a 1-of-4 input multiplexer feeding a decoder that extracts PCM, channel status, user data, validity, and parity - while supporting automatic detection of non-PCM streams (IEC 61937, DTS CD/LD) and Q-channel sub-code decoding.
The DIT block encodes PCM into AES3 format with selectable input sources (encoder output or bypass path), dual outputs (differential TX+/TX− and CMOS-buffered AESOUT), and block-sized buffers for channel status/user data. Both DIR and DIT support 24-bit word length, and the two audio serial ports operate synchronously in master or slave mode up to 216 kHz with left/right-justified and I²S formats.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sampling Rate Support | Up to 216 kHz - enables high-resolution audio transport in studio-grade systems and Blu-ray playback. |
| DIR PLL Lock Range | 20 kHz to 216 kHz - ensures robust synchronization across consumer, pro-audio, and broadcast source formats. |
| Recovered Clock Jitter | 250 ps RMS cycle-to-cycle - meets low-jitter requirements for DAC clocking in high-fidelity audio paths. |
| DIT Output Jitter | 200 ps RMS cycle-to-cycle - preserves timing integrity when transmitting to downstream receivers or ADCs. |
| Audio Serial Ports | Two (Port A & B), each supporting I²S, left/right-justified, up to 24-bit data - allows simultaneous interfacing with multiple converters or DSPs. |
| Host Interface | Configurable SPI (≤40 MHz) or I²C (Standard/Fast mode) - enables flexible microcontroller integration without protocol lock-in. |
| Power Supplies | 1.8-V core (VDD18), 3.3-V analog/driver (VDD33/VCC), 1.65–3.6-V I/O (VIO) - supports mixed-voltage system design and low-power operation. |
Pinout & Package
TQFP-48 package (7.00 mm × 7.00 mm), lead-free, pin-compatible with TI's SRC4382 and SRC4392.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RX1+ / RX1− to RX4+ / RX4− | Differential line receiver inputs | Accept balanced AES3/S/PDIF signals; enable multi-source routing via internal 1-of-4 multiplexer. |
| TX+ / TX− | Differential DIT line driver outputs | Drive 110-Ω balanced cables directly; meet AES3 electrical compliance without external components. |
| AESOUT | CMOS-buffered DIT output | Interfaces with optical transmitters or logic-level receivers; selectable via bypass multiplexer. |
| SDINA / SDINB, SDOUTA / SDOUTB | Audio serial port data I/O | Support full-duplex PCM transfer at up to 216 kHz; configurable as master/slave with programmable word length. |
| MCLK / RXCKI / RXCKO | Master, reference, and recovered clock I/O | Enable flexible clock domain management: RXCKO provides low-jitter system clock derived from incoming stream. |
| CCLK/SCL, CDIN/A1, CDOUT/SDA, CS/A0, CPM | Configurable SPI/I²C host interface | Allow register access, buffer reads/writes, and interrupt handling; CPM selects interface mode at power-up. |
| GPO1–GPO4 | Programmable general-purpose outputs | Can mirror internal status (e.g., LOCK, error flags) or serve as logic-level control signals for external circuitry. |
| INT | Open-drain interrupt output | Signals error conditions (e.g., PLL unlock, parity failure); maskable per register to reduce host polling overhead. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic non-PCM stream detection | Identifies IEC 61937 and DTS CD/LD frames without host intervention - simplifies firmware for multi-format playback systems. |
| Bypass multiplexer path | Routes raw line receiver output directly to DIT outputs - enables transparent pass-through of encoded streams without decoding latency. |
| Q-channel sub-code decoding | Extracts CD subcode data (track number, index, time) from S/PDIF streams - essential for CD transport and metadata-aware players. |
| Per-block channel status & user data buffers | 256-byte buffers accessible via SPI/I²C - allow host to read/write full channel status frames or embed custom metadata. |
| Individual functional block power-down | Each major block (DIR, DIT, Port A, Port B) can be disabled independently - reduces dynamic current by up to 85% in idle configurations. |
Applications
| Digital Audio Router | Broadcast Studio Interface |
|---|---|
Use Scenario: Aggregating and switching between multiple AES3/S/PDIF sources (microphones, playback decks, network streams) before distribution to recorders or monitors. IC Role / Device Role / Timing Role: DIR receives and validates incoming streams; DIT retransmits selected stream; RXCKO provides low-jitter sync clock for downstream devices. Use Value: Eliminates need for discrete receiver/transmitter pairs and external clock cleaners - reduces BOM count and PCB area by >40%. |
Use Scenario: Interfacing legacy analog consoles with modern digital audio workstations (DAWs) and IP-based transport systems. IC Role / Device Role / Timing Role: DIR recovers clock and decodes channel status from analog-to-digital converter outputs; Port A feeds DAW via I²S; GPO pins flag lock loss or format mismatch. Use Value: Maintains sample-accurate synchronization across hybrid analog/digital signal chains - prevents dropouts during live broadcast transitions. |
| A/V Receiver Digital Hub | Car Audio DSP Gateway |
Use Scenario: Centralizing digital audio inputs (Blu-ray, streaming box, game console) and routing decoded PCM to multi-channel DACs and HDMI audio extractors. IC Role / Device Role / Timing Role: DIR handles multiple S/PDIF inputs; DIT drives HDMI audio extractor; Port B feeds surround processor via I²S with 24-bit resolution. Use Value: Supports simultaneous 7.1 PCM + Dolby TrueHD passthrough using single IC - avoids timing skew between decoded and passthrough paths. |
Use Scenario: Bridging infotainment head unit outputs (S/PDIF) to automotive-grade DSPs requiring I²S or left-justified interfaces. IC Role / Device Role / Timing Role: DIR locks to factory head unit S/PDIF; Port A outputs 24-bit I²S to DSP; RST and INT enable fail-safe reset on bus errors. Use Value: Enables seamless integration with automotive-grade power sequencing and diagnostics - meets AEC-Q100 Class 2 thermal requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital audio interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SRC4382IPFBR | Pin- and register-compatible; lacks Q-channel decoding and non-PCM auto-detection; identical DIR/DIT specs and package. | Targeted at cost-sensitive pro-audio gear where CD subcode or DTS passthrough is unnecessary. | Select SRC4382IPFBR only if Q-channel and IEC 61937 support are excluded from system requirements. |
| PCM9211PWR | Multi-channel PCM-focused; supports up to 12 single-ended S/PDIF inputs; no DIR/DIT dual-mode operation; different pinout and power architecture. | Designed for high-density audio I/O in mixing consoles and recording interfaces - not a drop-in replacement. | Choose PCM9211PWR when scaling beyond 4 S/PDIF inputs or requiring native multi-channel PCM routing over discrete interfaces. |
Compared with SRC4382IPFBR, DIX4192IPFBR adds critical broadcast and CD transport features (Q-channel, DTS detection) without sacrificing compatibility; versus PCM9211PWR, it delivers tighter integration and lower system-level jitter but with fixed 4-input topology.
Availability
DIX4192IPFBR is available at Aetrix Electronics and suitable for digital audio routers, broadcast studio interfaces, and A/V receiver designs requiring stable component supply, long-term lifecycle assurance, and TI-authorized traceability.
Supply support for DIX4192IPFBR 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and digital signal technologies for industrial, automotive, and communications markets.
The DIX4192IPFBR belongs to TI's professional digital audio interface product line, engineered specifically for high-fidelity, low-jitter transport and conversion in broadcast, studio, and consumer A/V systems.
FAQ
What is the primary function of the DIX4192IPFBR?
The DIX4192IPFBR is an integrated digital audio interface receiver and transmitter (DIR/DIT) that decodes and encodes AES3/S/PDIF streams while providing two synchronous audio serial ports (A/B). It performs clock recovery, channel status parsing, Q-channel subcode extraction, and low-jitter clock generation - all within a single TQFP-48 package. The DIX4192IPFBR enables compact, high-performance digital audio interconnects in professional and consumer equipment.
Does the DIX4192IPFBR support both I²C and SPI host interfaces?
Yes, the DIX4192IPFBR supports both I²C (Standard and Fast mode, up to 400 kHz) and SPI (up to 40 MHz) host interfaces, selected via the CPM pin at power-up. Both interfaces provide full access to control registers, status flags, and 256-byte channel status/user data buffers. The DIX4192IPFBR does not require external level shifters for either interface, as VIO supports 1.65–3.6 V logic levels.
What sampling rates does the DIX4192IPFBR support in DIR and DIT modes?
The DIX4192IPFBR DIR supports PLL lock across 20 kHz to 216 kHz, covering CD (44.1 kHz), DVD (48 kHz), SACD (88.2/176.4 kHz), and high-res formats (192/216 kHz). The DIT and audio serial ports operate up to 216 kHz in both master and slave modes. All blocks support 16-, 20-, and 24-bit audio word lengths, with the DIX4192IPFBR maintaining full functionality across this entire range without configuration changes.
How does the bypass multiplexer in the DIX4192IPFBR improve system design?
The bypass multiplexer in the DIX4192IPFBR routes raw line receiver outputs directly to the DIT's differential driver (TX+/TX−) and CMOS buffer (AESOUT), enabling transparent pass-through of AES3-encoded streams without decoding or re-encoding. This eliminates latency, preserves embedded metadata, and reduces power consumption - making the DIX4192IPFBR ideal for digital audio distribution amplifiers and format-transparent routing switches where bit-identical transport is required.
Is the DIX4192IPFBR pin-compatible with other TI audio interface ICs?
Yes, the DIX4192IPFBR is pin- and register-compatible with the TI SRC4382 and SRC4392, sharing identical TQFP-48 footprint, power pin assignments, and register map structure. This allows direct hardware substitution in existing designs - though the DIX4192IPFBR adds Q-channel decoding, non-PCM auto-detection, and enhanced interrupt reporting not present in those predecessors. Firmware updates may be needed to leverage new features.
DIX4192IPFBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Audio Transceiver
- Applications:
- Audio
- Number of Channels:
- 4
- Interface:
- I2C, SPI
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Specifications:
- Differential Output
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
DIX4192IPFBR FAQ
1.How can I place an order for DIX4192IPFBR through Aetrix?
Please submit a Request for Quotation (RFQ) for DIX4192IPFBR 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 DIX4192IPFBR reliable?
The price and inventory of DIX4192IPFBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DIX4192IPFBR is usually 5 days.
3.What payment methods are accepted for DIX4192IPFBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DIX4192IPFBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DIX4192IPFBR?
DIX4192IPFBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DIX4192IPFBR 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 DIX4192IPFBR?
For technical support, including DIX4192IPFBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DIX4192IPFBR requirements.
6.How does Aetrix verify that DIX4192IPFBR is sourced from the original manufacturer or authorized distributors?
All DIX4192IPFBR 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 DIX4192IPFBR meets industry standards.
7.What is the process for return or replacement of DIX4192IPFBR?
All DIX4192IPFBR units undergo pre-shipment inspection (PSI). If there is an issue with DIX4192IPFBR, 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 DIX4192IPFBR part is unused and in its original packaging.
Return procedure for DIX4192IPFBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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