The phrase "CM4 94V-0" is actually a combination of two entirely separate industry terms. Tech builders frequently search for them together because they are printed right next to each other on the PCB. 1. CM4 (Raspberry Pi Compute Module 4)
, use 94V-0 rated materials to meet international safety and insurance standards. 2. Status of Official CM4 Schematics
. This means your schematic doesn't need a complex PHY chip—just a transformer-integrated RJ45 MagJack connecting to the CM4 differential pair pins. Crucial Schematic Interfacing Requirements cm4 94v0 schematics
The is the powerhouse of modern embedded Linux development. Unlike its single-board computer (SBC) cousin, the Raspberry Pi 4 Model B, the CM4 is designed specifically for industrial, commercial, and professional integration.
: Essential for pinout definitions and electrical specifications. Available at the official Raspberry Pi site 2. Understanding "94V-0" in PCB Design When you see stamped on a CM4 or its carrier board, it refers to the safety standard for flammability of plastic materials. V-0 Rating The phrase "CM4 94V-0" is actually a combination
Because thousands of different electronic devices use 94V-0 rated circuit boards, searching for "94V-0 schematics" alone will not yield the correct technical drawings. You must identify the specific manufacturer and model of the baseboard (or "carrier board") that the CM4 plugs into. 2. Identifying Your Specific CM4 Carrier Board
| Interface | Typical Use in 94V0 Designs | |-----------|-----------------------------| | Gigabit Ethernet | RTL8211F or LAN7518 (USB hub + Ethernet) | | USB 3.0 | VL805 (if CM4 lacks onboard USB 3.0) | | PCIe | M.2 Key M slot for NVMe SSD | | HDMI | ESD protection arrays (e.g., TPD4E02B04) | | MicroSD | Level shifters for 1.8V/3.3V (TXS02612) | CM4 (Raspberry Pi Compute Module 4) , use
Trace from DC jack → voltage regulator (e.g., AOZ1284 or MP9943) → 5V net → CM4 connectors (pins 2, 4, 6… for 5V). Check if 3.3V for I/O is LDO or buck.