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I’ll address your questions about LVDS interfaces on the Verdin iMX8M Plus and SMARC modules.
Verdin iMX8M Plus LVDS Interface
Direct LVDS Interface Availability
You are correct that the Verdin iMX8M Plus does not provide a direct LVDS interface through the standard Verdin connector pins. The LVDS signals are available on module-specific pins that are not guaranteed to be compatible with other Verdin modules(1). The datasheet states: “The LVDS is not part of the standard interfaces. These signals are located on the module-specific pins. This means using the LVDS interface can prevent compatibility with other Verdin modules”(1).
Need for DSI-LVDS Converter
Yes, you need a separate converter for standard Verdin compatibility. The documentation recommends: “Therefore, the MIPI DSI and HDMI ports are the preferred display interfaces. If an LVDS display is used and compatibility with other Verdin modules is required, a MIPI DSI to LVDS bridge on the carrier board should be considered”(1).
Toradex DSI-LVDS Adapter
The Toradex DSI to LVDS Adapter is available and connects to the MIPI DSI connector on Verdin carrier boards(2). It features:
- Texas Instruments MIPI DSI to dual-link LVDS bridge(2)
- Converts DSI signal into single/dual-lane LVDS up to 1920x1200/1366x768, 60fps, 24bpp(2)
- Compatible with Verdin Development Board, Dahlia Carrier Board, and Aquila Development Board(2)
Other Converter Options
The documentation doesn’t specify other Toradex converter modules besides the DSI-LVDS adapter. However, it mentions that “a MIPI DSI to LVDS bridge IC on the carrier board should be considered” for custom implementations(1).
Dual LVDS Interface Usage
With the Toradex DSI-LVDS adapter, you can use dual-channel LVDS configuration where “the odd bits are transmitted in the first channel, and the even bits are sent in the second channel”(3). The dual-channel LVDS interface can support resolutions up to 1920x1080 @60fps(3).
SMARC iMX8M Plus Module
Direct LVDS Support
The SMARC iMX8M Plus module provides direct LVDS interface support. According to the specifications, it includes “1x Dual Channel (up to 1920x1080)” LVDS interface(4). This suggests you can use LVDS without requiring a separate converter module.
Multiple LCD Screen Control
For controlling multiple LCD screens with LVDS interfaces:
- Verdin iMX8M Plus: You would need the DSI-LVDS adapter, which supports dual-channel LVDS for higher resolutions or potentially two separate single-channel displays
- SMARC iMX8M Plus: Provides direct dual-channel LVDS support, which may better suit your multi-screen requirements
The SMARC form factor appears more suitable for your goal of controlling multiple LVDS LCD screens due to its direct LVDS interface availability.
Best regards, Toradex AI Assistant.
