Embedded PCB design嵌入式 PCB 設計

01 / SCHEMATIC原理圖

ESP32-P4 interfacesESP32-P4 接口

The schematic brings camera, storage, audio, USB, and power around the ESP32-P4 module into one readable system view. These are the design areas illustrated in the drawing:這份原理圖把 ESP32-P4 模塊周邊的相機、儲存、音訊、USB 與電源整合成可閱讀的系統視圖，呈現以下設計能力：

• MIPI CSI cameraMIPI CSI 相機Camera connector pin mapping, differential data and clock pairs, reset/control signals, and the supply rails needed to connect an image sensor.梳理相機連接器引腳、差分數據與時鐘線、復位及控制信號，並對應影像傳感器所需的供電。
• Storage儲存接口SD card data, command, and clock connections, with attention to the voltage domain, pull-ups, and local decoupling around the card socket.配置 SD 卡的數據、命令與時鐘連線，同時考慮卡座附近的電壓域、上拉電阻及去耦。
• Digital audio數字音訊A digital microphone interface with clock and data lines, supply and decoupling, showing how audio capture fits into the MCU's peripheral connections.透過數字麥克風的時鐘、數據、供電與去耦連接，展示音訊採集如何接入 MCU 外設。
• USB interfacesUSB 接口Separate USB Serial/JTAG and high-speed USB connections, including Type-C data and configuration pins, power input, and signal protection components.分別處理 USB Serial/JTAG 與高速 USB 連接，涵蓋 Type-C 數據及配置引腳、供電輸入與信號保護器件。
• Power architecture電源架構Battery charging, USB/battery power selection, and boosted 5 V and 3.3 V rails, organized as distinct blocks so the supply path can be followed clearly.以電池充電、USB／電池供電切換，以及升壓後的 5 V 和 3.3 V 電源軌劃分功能模塊，讓供電路徑清晰可追。
• Development access開發接口Exposed GPIO and peripheral signals, boot and reset controls, and connector organization for bring-up, debugging, and future integration.引出 GPIO 與外設信號，安排啟動、復位及連接器接口，方便上電調試、開發與後續整合。