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Texas Instruments DS90UB928QSQ/NOPB
- Part No.:
- DS90UB928QSQ/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Serializers, Deserializers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
DS90UB928QSQ/NOPB.pdf
- Description:
- IC DESERIALIZER LVDS 48WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,127
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Product details
Overview
DS90UB928QSQ/NOPB from Texas Instruments is an automotive-grade FPD-Link III deserializer that converts high-speed serialized video/audio over a single AC-coupled STP pair into four LVDS data streams, one LVDS clock (OpenLDI), and up to four I2S audio outputs. It supports 720p RGB888 video with VS/HS/DE timing, 5–85 MHz pixel clock, and operates from a single 3.3 V supply with 1.8 V/3.3 V LVCMOS I/O. Used in automotive infotainment display interfaces.
For engineers reviewing the DS90UB928QSQ/NOPB datasheet, DS90UB928QSQ/NOPB pinout, DS90UB928QSQ/NOPB application, or DS90UB928QSQ/NOPB equivalent, this page delivers verified technical context, validated pin functions, real-world automotive use cases, and confirmed alternative options - all grounded in TI's production datasheet SNLS417C (Rev. C, July 2016).
Technical Context
The DS90UB928QSQ/NOPB implements adaptive cable equalization on its FPD-Link III receiver (RIN±) to compensate for up to 10-meter STP channel loss, with embedded clock recovery and DC-balanced scrambling. Its deserialization path delivers four LVDS data pairs (TxOUT[3:0]±), one LVDS clock pair (TxCLKOUT±), and parallel I2S audio (MCLK, I2S_CLK, I2S_WC, I2S_DA–DD) synchronized to the recovered pixel clock.
It integrates bidirectional control via I²C (SDA/SCL), four configurable GPIOs (GPIO[3:0]), register-access-only GPIOs (GPIO_REG[8:5]), and status outputs (LOCK, PASS). Configuration is managed through MODE_SEL, MAPSEL, LFMODE, and BISTEN pins, enabling backward compatibility, long-cable mode, and built-in self-test functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Video Support | 720p RGB888 + VS/HS/DE timing; enables direct interface to automotive LCD panels without external timing controllers. |
| Pixel Clock Range | 5 MHz to 85 MHz; covers standard automotive display rates including WVGA and HD resolutions with margin for jitter tolerance. |
| FPD-Link III Input | Single AC-coupled differential pair (RIN±); supports up to 10 m STP cable with adaptive equalization and embedded clock recovery. |
| LVDS Outputs | Four 24-bit data pairs (TxOUT[3:0]±) + one clock pair (TxCLKOUT±); compliant with OpenLDI (FPD-Link) standard, 100 Ω differential termination required. |
| I²C Control Interface | Standard-mode (100 kHz) and fast-mode (400 kHz) compatible; uses open-drain SDA/SCL with 4.7 kΩ pullups to VDD33. |
| Audio Interface | Four independent I2S outputs (I2S_DA–DD) + MCLK/I2S_CLK/I2S_WC; supports surround sound with programmable word clock alignment. |
| Supply & I/O | Single 3.3 V VDD33 supply; dual-voltage LVCMOS I/O (1.8 V or 3.3 V selectable via VDDIO); meets AEC-Q100 Grade 2 (−40°C to +105°C). |
Pinout & Package
DS90UB928QSQ/NOPB is housed in a 48-pin WQFN package (7.0 mm × 7.0 mm, 0.4 mm pitch) with exposed thermal pad (DAP = GND). Pin functions are validated per TI SNLS417C Rev. C, Table 1 and Figure 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RIN+, RIN− | FPD-Link III differential input | AC-coupled receiver inputs with 100 Ω internal termination; accept scrambled, embedded-clock serial stream from DS90UB927Q-Q1 serializer. |
| TxCLKOUT+, TxCLKOUT− | LVDS clock output | True/inverting LVDS clock pair for OpenLDI timing; requires external 100 Ω differential termination at display side. |
| TxOUT[3:0]+, TxOUT[3:0]− | LVDS data outputs | Four 24-bit LVDS data lanes (RGB888 + control); each pair needs 100 Ω termination; mapping configurable via MAPSEL. |
| SDA, SCL | I²C bidirectional control bus | Open-drain interface for configuration registers and status reads; requires 4.7 kΩ pullups to VDD33. |
| LOCK, PASS | Status outputs | LOCK = high when PLL locked (valid outputs enabled); PASS = high during error-free BIST operation; both LVCMOS, 3.3 V tolerant. |
| PDB | Power-down control input | Active-high enable; must be driven or pulled up to VDD33 ≥3.0 V; asserts power-down state (tri-state outputs, PLL off, IDD < 8 mA) when low. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive cable equalization | Compensates for frequency-dependent loss in 10 m STP cables, enabling robust link establishment without manual tuning. |
| Bidirectional control channel | Full-duplex I²C over same FPD-Link III physical layer - eliminates separate control wiring and reduces EMI. |
| Image enhancement engine | Integrated white balance and dithering logic improves visual fidelity on automotive displays without host processor load. |
| Backward compatibility modes | Configurable via MODE_SEL to interoperate with legacy FPD-Link (OpenLDI) sources using REPEAT or BKWD modes. |
| Four-channel I2S audio support | Simultaneous output of discrete left/right/front/rear audio streams - enables true surround sound in rear-seat entertainment systems. |
Applications
| Automotive Navigation Display | Rear Seat Entertainment |
|---|---|
|
Use Scenario: Central infotainment unit driving a 7-inch WVGA LCD cluster with touch overlay and navigation graphics. IC Role / Device Role: Deserializes video from graphics processor over FPD-Link III; provides LVDS timing and RGB data to display panel while routing I2S audio to seat speakers. Use Value: Reduces cable harness weight by consolidating video, audio, and control onto one STP pair - critical for EMC compliance and space-constrained dash layouts. |
Use Scenario: Dual-screen rear-seat system delivering independent HD video and 5.1-channel audio to passengers. IC Role / Device Role: Receives serialized video/audio from head-unit; outputs four I2S streams and LVDS video to dual displays with independent brightness control via GPIO. Use Value: Enables simultaneous multi-zone playback using single serializer-deserializer pair - lowers BOM cost vs. dual-channel solutions. |
| Driver Assistance Display | Megapixel Camera Video Link |
|
Use Scenario: HUD or instrument cluster overlaying ADAS alerts (lane departure, blind spot) onto real-time video feed. IC Role / Device Role: Deserializes low-latency video from camera module; supplies precise HS/VS/DE signals and RGB888 data for real-time compositing. Use Value: Sub-1 ms end-to-end latency (including equalization lock time < 40 ms) ensures timely alert rendering during dynamic driving conditions. |
Use Scenario: Transmitting uncompressed 1.3 MP image data from front-facing camera to domain controller over 8 m harness. IC Role / Device Role: Converts serialized FPD-Link III stream into LVDS-compatible format for SoC video input; uses CMLOUTP/N for signal integrity monitoring. Use Value: Adaptive equalization maintains bit error rate < 1e−12 at 85 MHz even with connector insertion loss - eliminates need for repeaters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPD-Link III deserializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS90UB948QSQ/NOPB | Supports 1080p (165 MHz PCLK), adds eDP compatibility, higher power (280 mA typical), 64-pin WQFN. | Required for full HD automotive displays; not drop-in due to pin count, voltage, and register map differences. | Select DS90UB948QSQ/NOPB only when 1080p resolution, eDP fallback, or extended temperature validation beyond Grade 2 is needed. |
| DS90UB926QSQ/NOPB | Lower-cost variant with no I2S audio outputs, reduced GPIO count (2), and no image enhancement features. | Suitable for basic video-only links (e.g., backup camera to display) where audio and white balance are unnecessary. | Choose DS90UB926QSQ/NOPB to reduce cost and complexity in non-audio, non-enhancement applications - but verify absence of I2S requirement. |
Compared with DS90UB928QSQ/NOPB, DS90UB948QSQ/NOPB extends resolution and interface flexibility at higher cost and layout complexity, while DS90UB926QSQ/NOPB removes audio and enhancement to serve minimal video transport - making DS90UB928QSQ/NOPB the optimal balance for 720p automotive displays requiring integrated audio and image quality features.
Availability
DS90UB928QSQ/NOPB is available at Aetrix Electronics and suitable for automotive navigation displays, rear-seat entertainment systems, and driver assistance interfaces requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for DS90UB928QSQ/NOPB 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 company specializing in analog, embedded processing, and automotive ICs, with decades of leadership in high-reliability interface solutions.
The DS90UB928QSQ/NOPB belongs to TI's FPD-Link III automotive serializer/deserializer family, designed specifically to replace bulky LVDS and TTL video interconnects in safety-critical vehicle displays and ADAS systems.
FAQ
What is the operating temperature range certified for DS90UB928QSQ/NOPB?
The DS90UB928QSQ/NOPB is qualified per AEC-Q100 Grade 2, with guaranteed operation from −40°C to +105°C ambient temperature. This rating is validated across all electrical parameters in TI's SNLS417C datasheet and applies to the full DS90UB928QSQ/NOPB production lot - no derating required within this range.
Does DS90UB928QSQ/NOPB support backward compatibility with legacy FPD-Link (OpenLDI) sources?
Yes, DS90UB928QSQ/NOPB supports backward compatibility via MODE_SEL pin configuration, enabling REPEAT (re-timing) and BKWD (legacy FPD-Link) modes. These modes allow interoperability with older OpenLDI transmitters without modifying the serializer side - confirmed in Section 8.4 of the DS90UB928QSQ/NOPB datasheet.
How many I2S audio channels does DS90UB928QSQ/NOPB provide, and what are their roles?
The DS90UB928QSQ/NOPB provides four independent I2S digital audio outputs (I2S_DA, I2S_DB, I2S_DC, I2S_DD), plus dedicated MCLK, I2S_CLK, and I2S_WC signals. These support discrete 5.1-channel surround sound routing - each output maps to a speaker zone (e.g., front left, rear right) as defined in TI Application Report SPRABW7.
What is the maximum supported cable length for DS90UB928QSQ/NOPB with adaptive equalization?
DS90UB928QSQ/NOPB supports AC-coupled STP interconnect up to 10 meters, as specified in the device description and validated in TI's application testing (SNLS417C Section 3). Performance at full length depends on cable quality and connector loss - TI recommends using 100 Ω impedance-controlled STP with ≤0.5 dB/m attenuation at 85 MHz.
Is DS90UB928QSQ/NOPB pin-compatible with DS90UB927Q-Q1 serializer?
No, DS90UB928QSQ/NOPB is not pin-compatible with DS90UB927Q-Q1 - they serve complementary roles (deserializer vs. serializer) and have entirely different pinouts, power domains, and signal directions. The DS90UB928QSQ/NOPB receives FPD-Link III on RIN± and outputs LVDS/I2S; the DS90UB927Q-Q1 performs the inverse function.
DS90UB928QSQ/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Deserializer
- Data Rate:
- 2.975Gbps
- Input Type:
- FPD-Link III, LVDS
- Output Type:
- LVDS
- Number of Inputs:
- 1
- Number of Outputs:
- 13
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WQFN (7x7)
DS90UB928QSQ/NOPB FAQ
1.How can I place an order for DS90UB928QSQ/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for DS90UB928QSQ/NOPB 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 DS90UB928QSQ/NOPB reliable?
The price and inventory of DS90UB928QSQ/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS90UB928QSQ/NOPB is usually 5 days.
3.What payment methods are accepted for DS90UB928QSQ/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS90UB928QSQ/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS90UB928QSQ/NOPB?
DS90UB928QSQ/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS90UB928QSQ/NOPB 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 DS90UB928QSQ/NOPB?
For technical support, including DS90UB928QSQ/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS90UB928QSQ/NOPB requirements.
6.How does Aetrix verify that DS90UB928QSQ/NOPB is sourced from the original manufacturer or authorized distributors?
All DS90UB928QSQ/NOPB 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 DS90UB928QSQ/NOPB meets industry standards.
7.What is the process for return or replacement of DS90UB928QSQ/NOPB?
All DS90UB928QSQ/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with DS90UB928QSQ/NOPB, 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 DS90UB928QSQ/NOPB part is unused and in its original packaging.
Return procedure for DS90UB928QSQ/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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