This is tedious but useful for one-off repairs.
: This is not a specific board model but a standard marking found on many CM4-compatible carrier boards, ensuring they meet strict fire safety requirements for commercial products. 2. Finding Boardview & Design Files cm4 94v0 boardview new
| Ref Des | Function | Common Net Names | |----------|----------|------------------| | | BCM2711 SoC | ETH_TXP , HDMI0_SCL , GPIOx | | U2/U3 | DDR4 RAM (2 or 4 chips) | DDR0_DQ0 , DDR0_CK_T | | U4 | PMIC (DA9090) | VDD_CORE , VDD_IO , 3V3 | | J1 | DDR2-SODIMM edge connector | PCIe_CLK_N , USB_D_P , HDMI_CEC | | X1 | 27MHz crystal | XIN , XOUT | | U6 | eMMC (if populated) | EMMC_D0 ... D7 , EMMC_CMD | This is tedious but useful for one-off repairs
: High-speed signals like PCIe Gen 2.0 x1 , Dual HDMI 2.0 , and USB 2.0 require controlled impedance routing (e.g., 90Ω for USB, 100Ω for HDMI). Key Hardware Specifications Finding Boardview & Design Files | Ref Des
: Websites like Boardviewer.net or specialized Telegram archives often host "new" collections of motherboard and SBC boardviews. Software Recommendations
: Raspberry Pi provides KiCad schematic and PCB layout files for their official CM4 IO Board .
BoardView alone is incomplete. You use it together with: