diff --git a/docs/en/api-reference/network/esp_eth.rst b/docs/en/api-reference/network/esp_eth.rst index c591d937c2..2042bf5a1d 100644 --- a/docs/en/api-reference/network/esp_eth.rst +++ b/docs/en/api-reference/network/esp_eth.rst @@ -138,7 +138,7 @@ The Ethernet driver is composed of two parts: MAC and PHY. * Force the PHY device to reset status (as the case **a** in the picture). **This could fail for some PHY device** (i.e., it still outputs signals to GPIO0 even in reset state). .. warning:: - If you want the **Ethernet to work with WiFi**, don’t select ESP32 as source of ``REF_CLK`` as it would result in ``REF_CLK`` instability. Either disable WiFi or use a PHY or an external oscillator as the ``REF_CLK`` source. + If you want the **Ethernet to work with Wi-Fi**, don’t select ESP32 as source of ``REF_CLK`` as it would result in ``REF_CLK`` instability. Either disable Wi-Fi or use a PHY or an external oscillator as the ``REF_CLK`` source. **No matter which RMII clock mode you select, you really need to take care of the signal integrity of REF_CLK in your hardware design!** Keep the trace as short as possible. Keep it away from RF devices and inductor elements. diff --git a/docs/zh_CN/api-reference/network/esp_eth.rst b/docs/zh_CN/api-reference/network/esp_eth.rst index d40b7e85f9..099fbe576b 100644 --- a/docs/zh_CN/api-reference/network/esp_eth.rst +++ b/docs/zh_CN/api-reference/network/esp_eth.rst @@ -142,6 +142,10 @@ ESP-IDF 提供一系列功能强大且兼具一致性的 API，为内部以太 .. note:: ESP-IDF 只支持 RMII 接口（即在 Kconfig 选项 :ref:`CONFIG_ETH_PHY_INTERFACE` 中始终选择 ``CONFIG_ETH_PHY_INTERFACE_RMII``）。 + .. warning:: + 如希望 **以太网与 Wi-Fi 一起工作**，不要选择 ESP32 作为 ``REF_CLK`` 的源，因为这会导致 ``REF_CLK`` 不稳定。可以选择禁用 Wi-Fi，或使用 PHY 或外部振荡器作为 ``REF_CLK`` 的源。 + + 在数据平面使用的信号通过 MUX 连接至特定的 GPIO，这些信号无法配置至其他 GPIO。在控制平面使用的信号则可以通过 Matrix 矩阵路由到任何空闲 GPIO。相关的硬件设计示例，请参考 `ESP32-Ethernet-Kit `_。 根据以太网板设计，需要分别为 MAC 和 PHY 配置必要的参数，通过两者完成驱动程序的安装。