Overview
The DS90UB928Q-Q1 is a FPD-Link III deserializer produced by Texas Instruments, designed for use in automotive infotainment systems. This device works in conjunction with the DS90UB925Q-Q1 or DS90UB927Q-Q1 serializer to distribute digital video and audio signals. It converts a high-speed serialized interface with an embedded clock, delivered over a single signal pair (FPD-Link III), into four LVDS data/control streams, one LVDS clock pair (OpenLDI), and I2S audio data. This solution reduces interconnect size and weight, eliminates skew issues, and simplifies system design by consolidating audio, video, and control data over a single differential pair.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | WQFN (RHS) | - |
| Pins | 48 | - |
| Operating Temperature Range | -40 to 105 | °C |
| Supply Voltage (VDD33) | 3.0 to 3.6 | V |
| Supply Voltage (VDDIO) | 1.71 to 3.6 | V |
| Pixel Clock Frequency | 5 to 85 | MHz |
| LVCMOS I/O Voltage | 1.8 V or 3.3 V | V |
| Junction Temperature | 150 | °C |
| ESD Ratings (HBM) | ±8 kV | - |
| ESD Ratings (CDM) | ±1250 V | - |
Key Features
- Qualified for Automotive Applications AEC-Q100
- Device Temperature Grade 2: -40°C to +105°C Ambient Operating Temperature Range
- Bidirectional Control Channel Interface with I2C Compatible Serial Control Bus
- Low EMI FPD-Link Video Output
- Supports High Definition (720p) Digital Video
- RGB888 + VS, HS, DE and I2S Audio Supported
- Up to 4 I2S Digital Audio Outputs for Surround Sound Applications
- 4 Bidirectional GPIO Channels with 2 Dedicated Pins
- Single 3.3 V supply with 1.8 V or 3.3 V Compatible LVCMOS I/O Interface
- AC-Coupled STP Interconnect Up to 10 Meters
- DC-Balanced and Scrambled Data with Embedded Clock
- Adaptive Cable Equalization
- Image Enhancement (White Balance & Dithering) and Internal Pattern Generation
- Backward Compatible Modes
Applications
- Automotive Displays for Navigation
- Rear Seat Entertainment Systems
- Automotive Driver Assistance
- Automotive Megapixel Camera Systems
Q & A
- What is the primary function of the DS90UB928Q-Q1?
The DS90UB928Q-Q1 is a deserializer that converts a high-speed serialized interface with an embedded clock into four LVDS data/control streams, one LVDS clock pair, and I2S audio data.
- What are the operating temperature ranges for the DS90UB928Q-Q1?
The device operates within a temperature range of -40°C to +105°C.
- What types of ESD protection does the DS90UB928Q-Q1 offer?
The device has ESD ratings of ±8 kV for Human Body Model (HBM) and ±1250 V for Charged Device Model (CDM).
- What is the maximum length of the AC-Coupled STP interconnect supported by the DS90UB928Q-Q1?
The device supports AC-Coupled STP interconnects up to 10 meters.
- Does the DS90UB928Q-Q1 support high-definition video?
Yes, it supports High Definition (720p) digital video.
- How many I2S digital audio outputs does the DS90UB928Q-Q1 support?
The device supports up to 4 I2S digital audio outputs for surround sound applications.
- What is the voltage range for the LVCMOS I/O interface?
The LVCMOS I/O interface is compatible with 1.8 V or 3.3 V.
- Does the DS90UB928Q-Q1 have adaptive cable equalization?
Yes, the device features adaptive cable equalization to compensate for transmission medium losses and deterministic jitter.
- What are some of the key applications for the DS90UB928Q-Q1?
Key applications include automotive displays for navigation, rear seat entertainment systems, automotive driver assistance, and automotive megapixel camera systems.
- Is the DS90UB928Q-Q1 backward compatible with other modes?
Yes, the device is backward compatible with other modes.
