Overview
The TMDS181RGZEVM is an evaluation module (EVM) designed by Texas Instruments to facilitate the evaluation and implementation of the TMDS181 device. The TMDS181 is a digital video interface (DVI) or high-definition multimedia interface (HDMI) retimer and redriver. It supports four TMDS channels, an audio return channel (SPDIF_IN/ARC_OUT), and digital display control (DDC) interfaces. This module is particularly useful for systems requiring high-resolution video transmission, such as 4k2k60p with 24 bits per pixel or WUXGA with 16-bit color depth, and it can be configured to support the HDMI 2.0a standard.
The EVM includes standard HDMI source and sink connectors, DC power regulators, an I2C programming interface, and a USB interface for accessing registers. It also features various configuration options, including jumper settings and external I2C host connections, to accommodate different system requirements.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | 48-Pin 7-mm × 7-mm 0.5-mm Pitch VQFN |
| Signaling Rate | Up to 6 Gbps |
| Supported Resolutions | 4k2k60p 24 bits per pixel, WUXGA 16-bit color depth, 1080p with higher refresh rates |
| Operating Modes | Redriver at < 1.0 Gbps, Retimer at > 1.0 Gbps, Configurable via I2C or pin strap |
| Temperature Range | 0°C to 85°C (Commercial), –40°C to 85°C (Industrial) |
| Power Supply | Dual power supply rails: 1.2 V on VDD, 3.3 V on VCC |
| I2C Interface | Programmable via I2C or pin strap, Target I2C Address: 0x5Eh |
Key Features
- Supports four TMDS channels, audio return channel (SPDIF_IN/ARC_OUT), and digital display control (DDC) interfaces.
- Inter-Pair Skew Compensation of 5+ Bits.
- Single-Ended Mode ARC Support.
- Link Debug Tools Including Eye Diagram After the RX Equalizer.
- Adaptive Receiver Equalizer or Programmable Fixed Equalizer.
- I2C and Pin Strap Programmable.
- HPD Snoop and DDC Snoop modes for system compatibility.
- USB interface for accessing registers and utility functions.
Applications
- High-definition multimedia interface (HDMI) systems.
- Digital video interface (DVI) systems.
- 4K and high-resolution display systems.
- Audio-visual equipment requiring high-speed video transmission.
- Consumer electronics such as TVs, monitors, and projectors.
- Professional video equipment and broadcast systems.
Q & A
- What is the TMDS181RGZEVM?
The TMDS181RGZEVM is an evaluation module designed to evaluate and implement the TMDS181 device, a digital video interface (DVI) or HDMI retimer and redriver.
- What are the key features of the TMDS181?
The TMDS181 supports four TMDS channels, audio return channel, DDC interfaces, and operates up to 6 Gbps. It also features inter-pair skew compensation, single-ended mode ARC support, and link debug tools.
- What are the operating modes of the TMDS181?
The TMDS181 can operate as a redriver at data rates below 1.0 Gbps and as a retimer at data rates above 1.0 Gbps. These modes can be configured via I2C or pin strap.
- What is the temperature range of the TMDS181?
The TMDS181 operates within a temperature range of 0°C to 85°C for commercial versions and –40°C to 85°C for industrial versions.
- How is the TMDS181 powered?
The TMDS181 uses dual power supply rails: 1.2 V on VDD and 3.3 V on VCC.
- What is the purpose of the HPD Snoop and DDC Snoop modes?
These modes are implemented to accommodate systems that do not properly support clock stretching on the DDC lines or resend DDC commands after HPD goes low, allowing the TMDS181 to snoop the state of these signals.
- How can the TMDS181 be configured?
The TMDS181 can be configured via I2C or pin strap settings, and it also supports external I2C host connections for debug and control purposes.
- What are the key components included in the TMDS181RGZEVM?
The EVM includes the TMDS181 device, standard HDMI source and sink connectors, DC power regulators, an I2C programming interface, and a USB interface.
- What are the typical applications of the TMDS181?
The TMDS181 is used in high-definition multimedia interface (HDMI) systems, digital video interface (DVI) systems, 4K and high-resolution display systems, and various consumer and professional video equipment.
- How do I power the TMDS181RGZEVM?
The EVM can be powered using a 5-V wall power adapter or through a micro-USB connection, with careful attention to voltage configurations to avoid back driving.
