STMicroelectronics B-LCDAD-HDMI1

Overview

B-LCDAD-HDMI1 from STMicroelectronics is a DSI-to-HDMI adapter board built around the Analog Devices ADV7533 bridge IC, enabling MIPI DSI video input (up to 4 lanes @ 800 Mbps) and HDMI 1.3 output (up to 80 MHz pixel clock), with dual-channel I2S and S/PDIF audio support. It is designed for integration with STM32 evaluation and discovery boards to demonstrate embedded video playback and display solutions.

For engineers reviewing the B-LCDAD-HDMI1 datasheet, B-LCDAD-HDMI1 pinout, B-LCDAD-HDMI1 application, or B-LCDAD-HDMI1 equivalent, key selection criteria include DSI lane count compatibility, HDMI timing compliance (e.g., 80 MHz pixel clock limit), CEC/HPD/I²C 5 V-tolerance, and co-design readiness with STM32-based DSI sources.

Technical Context

The board implements a fixed-function DSI-to-HDMI protocol translation using the ADV7533, which accepts non-burst DSI video streams (2–4 lanes) and embeds stereo audio via I2S or S/PDIF into HDMI TMDS output. Video mode synchronization relies on DSI's dedicated sync pulse, not escape mode.

It provides hardware-level ESD protection on HDMI I/Os (CEC, HPD, I²C), common-mode filtering, and 5 V-tolerant I²C interfaces for direct connection to STM32 development platforms without level-shifting. No firmware or configuration software is required for basic operation.

Key Specifications

Availability

B-LCDAD-HDMI1 is available at Aetrix Electronics and suitable for STM32-based display prototyping, embedded multimedia demos, and industrial HMI development requiring stable component supply and documented reference design integration.

Supply support for B-LCDAD-HDMI1 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

STMicroelectronics is a global semiconductor leader specializing in microcontrollers, analog ICs, power management, and embedded solutions for automotive, industrial, and consumer applications.

The B-LCDAD-HDMI1 belongs to ST's STM32 Development Tools ecosystem, designed specifically to extend display capabilities of STM32 evaluation platforms by bridging DSI outputs to standard HDMI monitors without custom PCB design.

FAQ

Does B-LCDAD-HDMI1 require firmware or driver installation?

No. The board uses the ADV7533 as a fixed-function bridge with no programmable logic or host-side drivers. It operates transparently when connected between an STM32 DSI source and an HDMI display, relying solely on hardware-level DSI packet parsing and HDMI TMDS encoding.

Can B-LCDAD-HDMI1 support DSI command mode or burst mode?

No. Per ST's data brief, the board supports video mode only - specifically non-burst mode with synchronization pulse. Command mode, burst mode, and DSI escape mode are not implemented or electrically supported.

What is the maximum resolution supported by B-LCDAD-HDMI1?

The board supports resolutions with pixel clocks up to 80 MHz. Verified examples include 1280×720@60Hz (74.25 MHz) and 1024×768@60Hz (65 MHz). Higher resolutions like 1920×1080 require >148 MHz pixel clock and exceed its capability.

Is the HDMI output CEC-enabled and fully compliant?

Yes. The board routes CEC signals directly from the ADV7533 to the HDMI connector and supports CEC command transmission/reception. All HDMI I/Os - including CEC, HPD, and I²C - are 5 V-tolerant and include common-mode filtering and ESD protection per IEC 61000-4-2 Level 4.