diff --git a/docs/en/api-reference/system/sleep_modes.rst b/docs/en/api-reference/system/sleep_modes.rst
index 254e54e167..5f32cc155b 100644
--- a/docs/en/api-reference/system/sleep_modes.rst
+++ b/docs/en/api-reference/system/sleep_modes.rst
@@ -254,7 +254,13 @@ RTC peripherals or RTC memories do not need to be powered on during sleep in thi
 
     .. only:: SOC_PM_SUPPORT_EXT1_WAKEUP_MODE_PER_PIN
 
-        The RTC controller also supports triggering wakeup, allowing configurable IO to use different wakeup levels simultaneously. This can be configured with :cpp:func`esp_sleep_enable_ext1_wakeup_io`.
+        The RTC controller also supports triggering wakeup, allowing configurable IO to use different wakeup levels simultaneously. This can be configured with :cpp:func:`esp_sleep_enable_ext1_wakeup_io`.
+
+    .. only:: not SOC_PM_SUPPORT_EXT1_WAKEUP_MODE_PER_PIN
+
+        .. note::
+
+           Due to hardware limitation, When we use multi-IOs for EXT1 wakeup, it is not allowed to configue these IOs to different triggering modes, and there is corresponding inspection mechanism in :cpp:func:`esp_sleep_enable_ext1_wakeup_io`.
 
     .. warning::
 
diff --git a/docs/zh_CN/api-reference/system/sleep_modes.rst b/docs/zh_CN/api-reference/system/sleep_modes.rst
index be32e6ed9d..5414290bed 100644
--- a/docs/zh_CN/api-reference/system/sleep_modes.rst
+++ b/docs/zh_CN/api-reference/system/sleep_modes.rst
@@ -254,7 +254,13 @@ RTC 控制器中内嵌定时器，可用于在预定义的时间到达后唤醒
 
     .. only:: SOC_PM_SUPPORT_EXT1_WAKEUP_MODE_PER_PIN
 
-        当前的 RTC 控制器也包含更强大的逻辑，允许配置的 IO 同时使用不同的唤醒电平。这可以通过:cpp:func:`esp_sleep_enable_ext1_wakeup_io` 函数来进行配置。
+        当前的 RTC 控制器也包含更强大的逻辑，允许配置的 IO 同时使用不同的唤醒电平。这可以通过 :cpp:func:`esp_sleep_enable_ext1_wakeup_io` 函数来进行配置。
+
+    .. only:: not SOC_PM_SUPPORT_EXT1_WAKEUP_MODE_PER_PIN
+
+       .. note::
+
+           由于硬件限制，当我们将多个 IO 用于 EXT1 唤醒，此时不允许将这些 IO 配制成不同的触发模式，在 :cpp:func:`esp_sleep_enable_ext1_wakeup_io` 已有相应的内部检查机制。
 
     .. warning::