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Texas Instruments DS90UB949ATRGCTQ1
- Part No.:
- DS90UB949ATRGCTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Serializers, Deserializers
- Package:
- 64-VFQFN Exposed Pad
- Datasheet:
-
DS90UB949ATRGCTQ1.pdf
- Description:
- POWER MANAGEMENT
- Quantity:
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- Shipping:
Inventory:507
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Product details
Overview
DS90UB949ATRGCTQ1 from Texas Instruments is an AEC-Q100 Grade 2 automotive HDMI-to-FPD-Link III bridge serializer supporting TMDS clock frequencies up to 210 MHz, 2-lane FPD-Link III output (3.675 Gbps aggregate), and HDMI 1.4b/DP++ input compatibility for 2K (2880×1080@60 Hz) video with 24-bit color depth - deployed in head units and rear-seat displays.
For engineers reviewing the DS90UB949ATRGCTQ1 datasheet, DS90UB949ATRGCTQ1 pinout, DS90UB949ATRGCTQ1 application, or DS90UB949ATRGCTQ1 equivalent, key selection criteria include HDMI input jitter tolerance (0.3 UITMDS), dual-lane FPD-Link III differential output compliance (900–1200 mVp-p), I²C master/slave + SPI pass-through control, and automotive-grade thermal performance (RθJA = 25.8 °C/W).
Technical Context
The DS90UB949ATRGCTQ1 implements a parallel-to-serial conversion architecture that accepts HDMI v1.4b TMDS inputs (IN_CLK±, IN_D0±–IN_D2±) and embeds video, audio, and control data into two synchronized FPD-Link III differential streams (DOUT0±, DOUT1±) with embedded clock recovery. It integrates dual PLLs: one for HDMI RX clock tracking (supports spread-spectrum reduction) and another for FPD-Link III TX line-rate generation (3.675 Gbps).
Control path integration includes three independent interfaces: a 1-Mbps I²C master/slave bus (SCL/SDA, configurable for 1.8 V or 3.3 V via I2CSEL), SPI pass-through (MOSI/MISO/SPLK/SS shared with D_GPIO[0:3]), and bidirectional high-speed GPIO channel (2 Mbps forward, lower-speed reverse). Audio extraction supports up to 8-channel I²S via dedicated pins (I2S_WC/I2S_DA/etc.) and optional auxiliary I²S.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| TMDS Input Frequency | Up to 210 MHz - enables 2880×1080@60 Hz or 1920×1200@60 Hz HDMI video with full 24-bit RGB color fidelity. |
| FPD-Link III Output Rate | 3.675 Gbps aggregate (1.8375 Gbps per lane) - supports STP/STQ/coax cabling with AC-coupling (0.1 µF) and EMI-reduced scrambling. |
| HDMI Jitter Tolerance | 0.3 UITMDS - ensures robust lock under HDMI CTS v1.4b jitter stress conditions (BER ≤1E−10 with CDR filter @4 MHz). |
| I²C Interface Speed | 1 Mbps Fast-Mode Plus - allows high-speed configuration of registers and companion deserializers (e.g., DS90UB948-Q1) over same link. |
| Supply Voltages | VDD18 = 1.71–1.89 V (IO/analog), VDD11 = 1.045–1.155 V (core/PLL), VTERM = 1.8 V or 3.3 V - enables flexible termination for AC/DC-coupled HDMI inputs. |
| Thermal Resistance | RθJA = 25.8 °C/W (64-pin VQFN) - validated for continuous operation at 105°C ambient in automotive infotainment enclosures. |
| AEC-Q100 Grade | Grade 2 (−40°C to +105°C TA) - qualified for front-panel head units, center displays, and commercial vehicle instrument clusters. |
Pinout & Package
DS90UB949ATRGCTQ1 is housed in a thermally enhanced 64-pin VQFN package (9.0 mm × 9.0 mm, 0.5 mm pitch) with exposed thermal pad requiring ≥9 vias to ground plane for thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN_CLK± (Pins 49,50) | HDMI TMDS Clock Input | Differential reference for video timing capture; supports 25–210 MHz with ±400 mV common-mode range and 90–110 Ω internal termination. |
| IN_D0±–IN_D2± (Pins 55,56;59,60;62,63) | HDMI TMDS Data Inputs | Three differential video/data channels accepting 150–1200 mVp-p signals; each pair internally terminated to VTERM (1.8 V or 3.3 V). |
| DOUT0±, DOUT1± (Pins 26,27;22,23) | FPD-Link III Serial Outputs | Two high-speed differential lanes (900–1200 mVp-p, 80 ps transition time); require AC coupling (0.1 µF) to DS90UB94x-Q1 deserializers. |
| SCL/SDA (Pins 15,14) | I²C Control Bus | Open-drain interface supporting 1-Mbps Fast-Mode Plus; voltage level set by I2CSEL (1.8 V or 3.3 V) at power-up. |
| D_GPIO0–D_GPIO3 (Pins 8,10,11,12) | High-Speed Bidirectional GPIO | 2 Mbps forward-channel GPIO shared with SPI signals; used for remote register access, status reporting, and sideband control. |
| HPD, DDC_SDA/SC L, CEC (Pins 42,44,45,1) | HDMI Auxiliary Interfaces | Hot-plug detect (open-drain, 1-kΩ pullup), DDC slave interface (47-kΩ pullup to RX_5V), and CEC I/O (27-kΩ pullup) - fully compliant with HDMI v1.4b section 4.2. |
Key Features
| Feature | Design Value |
|---|---|
| HDMI 1.4b & DP++ Input Support | Accepts native HDMI sources and DisplayPort++ (DP++) sources without external level-shifting or protocol translation hardware. |
| Backward Compatibility | Interoperates with legacy DS90UB92x-Q1 deserializers (e.g., DS90UB926Q-Q1) in single-lane mode up to 1920×720@60 Hz. |
| Embedded Audio Extraction | Extracts up to 8-channel PCM audio via integrated I²S interface (I2S_WC/I2S_DA/etc.), eliminating need for external audio codecs in display systems. |
| Spread-Spectrum Tracking | Adaptively tracks spread-spectrum HDMI clocks to suppress EMI peaks without sacrificing video integrity or lock stability. |
| Multi-Interface Control Plane | Simultaneous I²C master/slave, SPI pass-through, and BCC GPIO enable concurrent configuration, diagnostics, and firmware updates across the serial link. |
| Automotive Thermal Robustness | Validated for continuous operation at 105°C ambient with RθJB = 5.1 °C/W - optimized for compact, fanless automotive display modules. |
Applications
| Automotive Head Unit | Rear-Seat Entertainment Display |
|---|---|
Use Scenario: Central infotainment system receiving HDMI video/audio from navigation, media, or smartphone mirroring sources. IC Role / Device Role / Timing Role: HDMI-to-FPD-Link III serializer bridging high-bandwidth video to long-reach display panels via coax or STP cable. Use Value: Enables 2880×1080@60 Hz resolution over 15 m coax with <0.3 UI jitter tolerance and integrated audio extraction - reducing BOM count vs. discrete HDMI PHY + serializer solutions. |
Use Scenario: Passenger-facing display in SUV or minivan, driven by HDMI source behind seat or overhead console. IC Role / Device Role / Timing Role: Serializer converting HDMI signal to dual-lane FPD-Link III for low-EMI transmission to remote LCD driver IC. Use Value: Supports dual-lane 3.675 Gbps output with AC-coupled termination, enabling lightweight cabling and simplified EMC filtering in constrained vehicle zones. |
| Center Information Display | Commercial Vehicle Instrument Cluster |
Use Scenario: Driver-centric digital dashboard integrating video feeds from backup camera, ADAS, and telematics. IC Role / Device Role / Timing Role: Automotive-grade serializer providing deterministic latency (<145×Tchar) and AEC-Q100 Grade 2 reliability. Use Value: Meets automotive thermal requirements (−40°C to +105°C) while delivering sub-15 ns jitter transfer peaking (δSTX = 0.1 dB) for stable display timing. |
Use Scenario: Heavy-duty truck or bus instrument cluster requiring ruggedized video interface between MCU and TFT panel. IC Role / Device Role / Timing Role: Bridge device enabling HDMI input compatibility with existing FPD-Link III display subsystems. Use Value: Backward compatibility with DS90UB92x-Q1 deserializers allows reuse of legacy display modules - accelerating platform migration without PCB redesign. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI-to-FPD-Link III bridge applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS90UB949AQRCRQ1 | Same silicon, 64-pin WQFN (5 mm × 5 mm) package - smaller footprint but higher RθJA (32.5 °C/W) and reduced thermal mass. | Preferred for space-constrained modules where board area is critical and ambient temperature stays ≤85°C. | Select DS90UB949AQRCRQ1 only when layout density outweighs thermal derating needs; DS90UB949ATRGCTQ1 remains optimal for 105°C environments. |
| DS90UB953TRGCRQ1 | Next-generation 3-lane serializer supporting 4K@30 Hz (3840×2160), higher TMDS frequency (340 MHz), and enhanced HDCP 2.3 support. | Required for future-proof 4K displays; not backward compatible with DS90UB94x-Q1 deserializers due to protocol changes. | Choose DS90UB953TRGCRQ1 only for new 4K designs; DS90UB949ATRGCTQ1 remains correct for 2K/1080p systems using DS90UB948-Q1 or DS90UB940-Q1. |
Compared with DS90UB949AQRCRQ1, DS90UB949ATRGCTQ1 delivers superior thermal performance (25.8 vs. 32.5 °C/W) and mechanical robustness for high-vibration automotive mounting; compared with DS90UB953TRGCRQ1, it offers proven interoperability with legacy DS90UB92x-Q1 deserializers and lower system cost for 2K applications.
Availability
DS90UB949ATRGCTQ1 is available at Aetrix Electronics and suitable for automotive head units, rear-seat entertainment displays, and commercial vehicle instrument clusters requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for DS90UB949ATRGCTQ1 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 automotive ICs, with decades of automotive qualification expertise and ISO/TS 16949-certified manufacturing.
The DS90UB949ATRGCTQ1 belongs to TI's FPD-Link III automotive serializer family, designed specifically to replace bulky LVDS interfaces in next-generation automotive displays while maintaining HDMI source compatibility and EMI resilience.
FAQ
What is the maximum supported HDMI resolution and refresh rate for DS90UB949ATRGCTQ1?
The DS90UB949ATRGCTQ1 supports up to 2880×1080@60 Hz with 24-bit color depth using dual-lane FPD-Link III output at 3.675 Gbps aggregate. It also supports 1920×1200@60 Hz and 1080p60, all compliant with HDMI v1.4b timing and jitter specifications. Resolution capability is limited by the 210 MHz TMDS clock ceiling and serializer's internal packetization engine - no external scaling or frame buffering is performed by DS90UB949ATRGCTQ1.
Does DS90UB949ATRGCTQ1 support both AC-coupled and DC-coupled HDMI inputs?
Yes, DS90UB949ATRGCTQ1 supports both configurations via the VTERM pin: 1.8 V supply enables AC-coupled internal termination (for standard HDMI sources), while 3.3 V supply enables DC-coupled termination (for certain non-standard or legacy sources). The device automatically adapts common-mode range (VICM1 = VTERM ±37.5 mV) and differential input sensitivity (150–1200 mVp-p) to match the selected VTERM setting - confirmed in Section 6.5 of the SNLS650 datasheet.
Can DS90UB949ATRGCTQ1 be used with DS90UB926Q-Q1 deserializers?
Yes, DS90UB949ATRGCTQ1 is explicitly backward-compatible with DS90UB926Q-Q1, DS90UB928Q-Q1, and DS90UB924-Q1 deserializers in single-lane mode, supporting resolutions up to 1920×720@60 Hz with 24-bit color. This compatibility is enabled by matching FPD-Link III protocol framing, clock recovery behavior, and control channel handshake - documented in Section 7.4 (Device Functional Modes) and Feature List of the DS90UB949A-Q1 datasheet.
What audio interfaces does DS90UB949ATRGCTQ1 provide?
DS90UB949ATRGCTQ1 provides two audio paths: (1) HDMI audio extraction supporting up to 8-channel PCM via integrated I²S interface (pins I2S_WC, I2S_DA, I2S_DB, I2S_DC, I2S_DD), and (2) optional auxiliary I²S channel (MCLK, SCLK, SDIN, SWC) for secondary audio sources. Both interfaces operate in slave mode synchronized to HDMI clock - no external audio codec is required for basic HDMI audio transport.
How is the I²C voltage level selected on DS90UB949ATRGCTQ1?
I²C voltage level is selected at power-up via the I2CSEL pin (Pin 6): tying I2CSEL to VDDIO with a 10-kΩ resistor configures 1.8-V I²C operation; leaving I2CSEL floating selects 3.3-V I²C. This setting is latched during initialization and cannot be changed dynamically. External pullups on SCL/SDA must match the selected level (4.7-kΩ recommended), and issuing a digital reset (register 0x01) reverts I2C_VSEL to 3.3-V default - per Pin Functions table in Section 5 of SNLS650.
DS90UB949ATRGCTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Serializer
- Data Rate:
- 3.675Gbps
- Input Type:
- HDMI
- Output Type:
- FPD-Link III, LVDS
- Number of Inputs:
- 4
- Number of Outputs:
- 2
- Voltage - Supply:
- 1.045V ~ 1.155V, 1.71V ~ 1.89V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 64-VQFN (9x9)
DS90UB949ATRGCTQ1 FAQ
1.How can I place an order for DS90UB949ATRGCTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS90UB949ATRGCTQ1 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 DS90UB949ATRGCTQ1 reliable?
The price and inventory of DS90UB949ATRGCTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS90UB949ATRGCTQ1 is usually 5 days.
3.What payment methods are accepted for DS90UB949ATRGCTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS90UB949ATRGCTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS90UB949ATRGCTQ1?
DS90UB949ATRGCTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS90UB949ATRGCTQ1 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 DS90UB949ATRGCTQ1?
For technical support, including DS90UB949ATRGCTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS90UB949ATRGCTQ1 requirements.
6.How does Aetrix verify that DS90UB949ATRGCTQ1 is sourced from the original manufacturer or authorized distributors?
All DS90UB949ATRGCTQ1 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 DS90UB949ATRGCTQ1 meets industry standards.
7.What is the process for return or replacement of DS90UB949ATRGCTQ1?
All DS90UB949ATRGCTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with DS90UB949ATRGCTQ1, 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 DS90UB949ATRGCTQ1 part is unused and in its original packaging.
Return procedure for DS90UB949ATRGCTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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