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Texas Instruments DIX9210PTR
- Part No.:
- DIX9210PTR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- -
- Datasheet:
-
DIX9210PTR.pdf
- Description:
- 192KHZ DIX, V
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Inventory:54,000
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Product details
Overview
DIX9210PTR from Texas Instruments is a 216-kHz digital audio interface transceiver (DIX) integrating S/PDIF receiver (DIR), transmitter (DIT), and multi-source PCM routing logic. It supports 12 S/PDIF inputs (2 coaxial + 10 optical), 3x PCM inputs, and dual PCM outputs plus DIT output - all operating asynchronously up to 216 kHz with 50-ps ultralow jitter on recovered clocks. It serves as the front-end audio interface in high-fidelity home theater AVRs.
For engineers reviewing the DIX9210PTR datasheet, DIX9210PTR pinout, DIX9210PTR application, or DIX9210PTR equivalent, key selection criteria include its 48-pin LQFP package, triple power domains (VCC/VDD/VDDRX), I²C/SPI control interface, 24-bit/216-kHz DIR/DIT capability, and integrated 48-bit channel status buffer for IEC61937-compliant compressed audio detection.
Technical Context
The DIX9210PTR implements a dual-domain PLL architecture: one for DIR clock recovery (locking to biphase input with ±100 ppm crystal tolerance) and another for DIT synchronization, enabling independent asynchronous operation between receiver and transmitter paths. Its DIR module detects non-PCM formats (IEC61937, DTS-CD/LD) via preamble and channel status analysis, while the DIT embeds user/channel status bits into compliant S/PDIF frames.
Routing is implemented via configurable multiplexers selecting among 12 S/PDIF inputs, 3x AUXIN PCM streams, and DIR output - directing to Main Port (SCKO/BCK/LRCK/DOUT), Aux Out (MPIO_B), or DIT. All digital I/O supports I²S, left/right-justified, and 16-/24-bit formats with MSB-first twos-complement encoding.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sampling Rate | 7–216 kHz for DIR, DIT, and routing - enables compatibility with legacy CD (44.1 kHz), DVD-Audio (96 kHz), and high-res audio (192/216 kHz) sources. |
| DIR Input Count | 12 single-ended S/PDIF inputs: RXIN0–RXIN11 - includes two integrated coaxial amplifiers (RXIN0/RXIN1) and ten CMOS/optical-capable inputs. |
| Jitter Performance | 50 ps RMS system clock jitter - ensures low-noise clock recovery critical for high-SNR DAC interfaces in premium audio systems. |
| Channel Status Buffer | 48-bit deep buffer per frame - captures full IEC60958 channel status words for format identification, copy protection, and metadata parsing. |
| Power Domains | Three independent supplies: VCC (analog PLL), VDD (digital core), VDDRX (coax amps) - allows selective power-down without disrupting analog lock or register state. |
| Control Interface | I²C (up to 400 kHz) or SPI mode - enables flexible host integration with microcontrollers or DSPs without requiring dedicated audio-aware peripherals. |
| Operating Temperature | –40°C to +85°C - validated for deployment in consumer AV receivers, soundbars, and broadcast equipment with extended thermal envelopes. |
Pinout & Package
Package: 48-pin LQFP (PT), 7 mm × 7 mm, 0.5 mm pitch, exposed pad not specified. Thermal resistance θJA = 61.0°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RXIN0, RXIN1 | Coaxial S/PDIF input with integrated amplifier | Accepts TTL-level coax signals directly; powered by VDDRX; internally pulled high when disabled via Register 34h. |
| RXIN2–RXIN7 | Biphase S/PDIF input / AUXIN auxiliary clock/data | Shared pins: RXIN4/ASCKI0 = system clock input or AUXIN0 SCK; supports optical or CMOS sources up to +5 V. |
| SCKO, BCK, LRCK, DOUT | Main PCM output port | Provides synchronous 24-bit I²S or justified audio stream at 128fS/256fS/512fS system clock rates - directly drives DSP or DAC. |
| ERROR/INT0, NPCM/INT1 | Configurable interrupt/status outputs | Signal DIR error lock loss or non-PCM detection; programmable polarity and source mapping via Registers 20h/2Bh. |
| MDO/ADR0, MDI/SDA, MC/SCL, MS/ADR1 | I²C/SPI control interface | I²C uses open-drain SDA/SCL; SPI uses push-pull data/clock; ADR0/ADR1 set I²C slave address (0x48–0x4F). |
| XTI, XTO | Crystal oscillator interface | Drives 24.576 MHz fundamental-mode crystal; XTI is CMOS Schmitt trigger input; XTO is buffered output - enables precise clock synthesis. |
Key Features
| Feature | Design Value |
|---|---|
| Asynchronous DIR/DIT operation | Enables simultaneous 48 kHz S/PDIF input and 96 kHz PCM output without sample-rate conversion hardware. |
| Integrated 48-bit channel status capture | Eliminates need for external status FIFO; supports real-time decoding of Dolby Digital, DTS, and MPEG metadata. |
| 12-input S/PDIF multiplexer with coax amplifiers | Reduces external components in multi-source AVRs - accepts both optical TOSLINK and RCA coax inputs on same IC. |
| Selective register-based power-down | Per-module shutdown (DIR/DIT/coax/oscillator) preserves configuration state - avoids reinitialization during standby transitions. |
| Auto-detecting sample rate calculator | Reads incoming fS from biphase stream and channel status bits - enables seamless source switching without host intervention. |
Applications
| Home Theater AV Receiver | High-End Soundbar |
|---|---|
|
Use Scenario: Aggregating audio from Blu-ray player (S/PDIF coax), streaming stick (optical), game console (I²S), and TV (PCM) into single DSP path. IC Role / Device Role / Timing Role: Digital audio front-end transceiver performing format-agnostic input demux, clock recovery, and synchronized routing. Use Value: Eliminates discrete S/PDIF receivers and level translators; 50-ps jitter preserves dynamic range in 24-bit/192-kHz playback. |
Use Scenario: Supporting multiple HDMI ARC, optical, and Bluetooth audio sources with automatic format detection and seamless switching. IC Role / Device Role / Timing Role: Central audio router with non-PCM detection (DTS-CD/LD) and embedded channel status parsing for metadata-aware processing. Use Value: Enables "one-button" source selection with zero audible glitch via PLL continuity management during clock source transitions. |
| Professional Audio Interface | Digital Broadcast Encoder |
|
Use Scenario: Routing 8-channel PCM from ADAT or AES3 inputs alongside S/PDIF monitor feeds into FPGA-based mixing engine. IC Role / Device Role / Timing Role: Multi-format digital audio switch with independent DIR/DIT clocks and configurable MPIO routing. Use Value: Provides 24-bit/216-kHz capability and 48-bit channel status access - meets EBU Tech 3250 and AES3 timing compliance. |
Use Scenario: Embedding Dolby E or MPEG-H metadata into broadcast S/PDIF streams while maintaining IEC61937 framing integrity. IC Role / Device Role / Timing Role: S/PDIF transmitter with full channel status/user data buffer and IEC61937 burst preamble generation. Use Value: Guarantees bit-accurate transmission of encoded multi-channel content with validated jitter tolerance per IEC60958-3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital audio transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AK4118VN | 8-channel S/PDIF receiver only (no DIT or routing); 192-kHz max; no coax amplifiers; QFN48 package. | Lacks transmitter and multiplexer - requires external DIT and glue logic for bidirectional or multi-source designs. | Choose for cost-sensitive, receive-only applications where routing and transmit functions are handled elsewhere. |
| Cirrus Logic CS8406-DZZ | DIT-only (no DIR); 24-bit/100-kHz; I²C/SPI; SOIC28 package; no channel status buffer or non-PCM detection. | Cannot replace DIX9210PTR's receiver functionality - only suitable as DIT supplement in hybrid architectures. | Select when adding S/PDIF output to existing DIR-equipped systems, not as full DIX replacement. |
Compared with AK4118VN and CS8406-DZZ, the DIX9210PTR uniquely integrates full transceiver, 12-input multiplexing, and intelligent routing in one LQFP-48 device - reducing BOM count and PCB area while enabling autonomous format-aware switching without host CPU involvement.
Availability
DIX9210PTR is available at Aetrix Electronics and suitable for home theater AV receivers, professional audio interfaces, and broadcast encoders requiring stable component supply across extended product lifecycles.
Supply support for DIX9210PTR 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 connectivity technologies for industrial, automotive, and consumer applications.
The DIX9210PTR belongs to TI's high-performance audio interface product line, designed specifically for multiformat, multichannel digital audio routing in premium consumer and pro-audio equipment.
FAQ
What is the maximum supported sampling frequency for the DIX9210PTR DIR and DIT modules?
The DIX9210PTR supports up to 216 kHz for both its digital audio interface receiver (DIR) and transmitter (DIT) modules, as confirmed in the SBAS519 datasheet under Recommended Operating Conditions and Electrical Characteristics. This enables compatibility with high-resolution audio formats including DSD over PCM and studio-grade 192/216 kHz PCM streams. The DIX9210PTR maintains full 24-bit resolution and 50-ps jitter performance across this entire range.
Does the DIX9210PTR include built-in coaxial S/PDIF input amplifiers?
Yes, the DIX9210PTR integrates two dedicated coaxial S/PDIF input amplifiers on pins RXIN0 and RXIN1, each powered by the separate VDDRX supply rail. These amplifiers accept standard 75-Ω coax signals and are enabled/disabled independently via Register 34h (RX0DIS/RX1DIS). When disabled, RXIN0 and RXIN1 are internally pulled high - eliminating need for external biasing circuitry.
How does the DIX9210PTR handle non-PCM audio formats like Dolby Digital or DTS?
The DIX9210PTR detects non-PCM audio (e.g., Dolby Digital, DTS-CD/LD) through its DIR module by analyzing IEC61937 burst preambles, channel status bits, and frame synchronization patterns. Detection status is signaled via the NPCM/INT1 pin (pin 2), configurable through Register 2Bh. The full 48-bit channel status buffer is accessible via I²C/SPI for host-side metadata extraction and format-specific processing.
Can the DIX9210PTR operate with asynchronous sampling rates on its DIR and DIT ports simultaneously?
Yes, the DIX9210PTR supports fully asynchronous operation: its DIR and DIT modules each have independent PLLs and clock domains, allowing concurrent reception at 48 kHz and transmission at 96 kHz without sample-rate conversion. This is explicitly documented in the Overview and Block Diagram sections of the SBAS519 datasheet and enables seamless multi-source audio aggregation in AV receivers.
What package type and pin count does the DIX9210PTR use?
The DIX9210PTR is packaged in a 48-pin LQFP (PT designation), measuring 7 mm × 7 mm with 0.5 mm lead pitch. This matches the pinout and thermal characteristics of the DIX9211PT family, as verified in the PACKAGE/ORDERING INFORMATION table of SBAS519. The LQFP-48 footprint supports standard reflow assembly and provides adequate thermal dissipation (θJA = 61.0°C/W) for continuous audio processing.
DIX9210PTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- -
- Sampling Rate (Per Second):
- -
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- -
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- -
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -
- Supplier Device Package:
- -
- Mounting Type:
- -
- Grade:
- -
- Qualification:
- -
DIX9210PTR FAQ
1.How can I place an order for DIX9210PTR through Aetrix?
Please submit a Request for Quotation (RFQ) for DIX9210PTR 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 DIX9210PTR reliable?
The price and inventory of DIX9210PTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DIX9210PTR is usually 5 days.
3.What payment methods are accepted for DIX9210PTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DIX9210PTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DIX9210PTR?
DIX9210PTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DIX9210PTR 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 DIX9210PTR?
For technical support, including DIX9210PTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DIX9210PTR requirements.
6.How does Aetrix verify that DIX9210PTR is sourced from the original manufacturer or authorized distributors?
All DIX9210PTR 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 DIX9210PTR meets industry standards.
7.What is the process for return or replacement of DIX9210PTR?
All DIX9210PTR units undergo pre-shipment inspection (PSI). If there is an issue with DIX9210PTR, 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 DIX9210PTR part is unused and in its original packaging.
Return procedure for DIX9210PTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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