docs:add pin header version information

docs/en/hw-reference/esp32/get-started-pico-kit.rst

@@ -37,8 +37,8 @@ All the IO signals and system power on ESP32-PICO-D4 are led out to two rows of
 
 .. note::
 
-    1. The 2 x 3 pads not populated with pin headers are connected to the flash memory embedded in the ESP32-PICO-D4 SiP module. For more details see module's datasheet in `Related Documents`_.
+    1. There are two versions of ESP32-PICO-KIT boards, respectively with male headers and female headers. In this guide, the male header version is taken as an example.
-    2. ESP32-PICO-KIT comes with male headers by default.
+    2. The 2 x 3 pads not populated with pin headers are connected to the flash memory embedded in the ESP32-PICO-D4 SiP module. For more details, see module's datasheet in `Related Documents`_.
 
 Functionality Overview
 ----------------------
@@ -62,10 +62,10 @@ The following figure and the table below describe the key components, interfaces
 
 .. figure:: ../../../_static/esp32-pico-kit-v4.1-f-layout.jpeg
     :align: center
-    :alt: ESP32-PICO-KIT board layout
+    :alt: ESP32-PICO-KIT board layout (with female headers)
     :figclass: align-center
 
-    ESP32-PICO-KIT board layout
+    ESP32-PICO-KIT board layout (with female headers)
 
 Below is the description of the items identified in the figure starting from the top left corner and going clockwise.
 
@@ -204,17 +204,17 @@ The dimensions are 52 x 20.3 x 10 mm (2.1" x 0.8" x 0.4").
 
 .. figure:: ../../../_static/esp32-pico-kit-v4.1-dimensions-back.jpg
     :align: center
-    :alt: ESP32-PICO-KIT dimensions - back
+    :alt: ESP32-PICO-KIT dimensions - back (with male headers)
     :figclass: align-center
 
-    ESP32-PICO-KIT dimensions - back
+    ESP32-PICO-KIT dimensions - back (with male headers)
 
 .. figure:: ../../../_static/esp32-pico-kit-v4-dimensions-side.jpg
     :align: center
-    :alt: ESP32-PICO-KIT V4 dimensions - side
+    :alt: ESP32-PICO-KIT V4 dimensions - side (with male headers)
     :figclass: align-center
 
-    ESP32-PICO-KIT dimensions - side
+    ESP32-PICO-KIT dimensions - side (with male headers)
 
 For the board physical construction details, please refer to its Reference Design listed below.
 
@@ -224,7 +224,7 @@ Related Documents
 
 * `ESP32-PICO-KIT V4 schematic <https://dl.espressif.com/dl/schematics/esp32-pico-kit-v4_schematic.pdf>`_ (PDF)
 * `ESP32-PICO-KIT V4.1 schematic <https://dl.espressif.com/dl/schematics/esp32-pico-kit-v4.1_schematic.pdf>`_ (PDF)
-* `ESP32-PICO-KIT Reference Design <https://www.espressif.com/en/support/download/documents?keys=ESP32-PICO-KIT+Reference+Design>`_ containing OrCAD schematic, PCB layout, gerbers and BOM
+* `ESP32-PICO-KIT Reference Design <https://www.espressif.com/sites/default/files/documentation/esp32-pico-kit_v4.1_20180314_en.zip>`_ containing OrCAD schematic, PCB layout, gerbers and BOM
 * `ESP32-PICO-D4 Datasheet <http://espressif.com/sites/default/files/documentation/esp32-pico-d4_datasheet_en.pdf>`_ (PDF)
 * :doc:`../../hw-reference/index`
 

docs/zh_CN/hw-reference/esp32/get-started-pico-kit.rst

@@ -37,8 +37,8 @@ ESP32-PICO-KIT 集成了 USB 转 UART 桥接电路，允许开发人员直接通
 
 .. note::
 
-    1. 每排未引出至排针的 3 个管脚已连接至 ESP32-PICO-D4 SiP 模组的内置 flash 模块。更多信息，请见 `相关文档`_ 中的模组技术规格书。
+    1. ESP32-PICO-D4 开发板目前有两种版本，分别采用排针与排母。本指南默认以排针版本为例。
-    2. ESP32-PICO-D4 开发板默认采用排针。
+    2. 每排未引出至排针的 3 个管脚已连接至 ESP32-PICO-D4 SiP 模组的内置 flash 模块。更多信息，请见 `相关文档`_ 中的模组技术规格书。
 
 功能概述
 --------
@@ -62,10 +62,10 @@ ESP32-PICO-KIT 开发板的主要组件、接口及控制方式见下。
 
 .. figure:: ../../../_static/esp32-pico-kit-v4.1-f-layout.jpeg
     :align: center
-    :alt: ESP32-PICO-KIT 开发板布局
+    :alt: ESP32-PICO-KIT 开发板布局（排母版）
     :figclass: align-center
 
-    ESP32-PICO-KIT 开发板布局
+    ESP32-PICO-KIT 开发板布局（排母版）
 
 ESP32-PICO-KIT 开发板的主要组件描述见下表（从左上角起顺时针顺序）。
 
@@ -204,17 +204,17 @@ ESP32-PICO-KIT 的尺寸为 52 x 20.3 x 10 mm (2.1" x 0.8" x 0.4")。
 
 .. figure:: ../../../_static/esp32-pico-kit-v4.1-dimensions-back.jpg
     :align: center
-    :alt: ESP32-PICO-KIT 尺寸图 -- 背面
+    :alt: ESP32-PICO-KIT 尺寸图 -- 背面（排针版）
     :figclass: align-center
 
-    ESP32-PICO-KIT 尺寸图 -- 背面
+    ESP32-PICO-KIT 尺寸图 -- 背面（排针版）
 
 .. figure:: ../../../_static/esp32-pico-kit-v4-dimensions-side.jpg
     :align: center
-    :alt: ESP32-PICO-KIT V4 尺寸图 -- 侧面
+    :alt: ESP32-PICO-KIT V4 尺寸图 -- 侧面（排针版）
     :figclass: align-center
 
-    ESP32-PICO-KIT 尺寸图 -- 侧面
+    ESP32-PICO-KIT 尺寸图 -- 侧面（排针版）
 
 有关开发板的物理结构细节，请见下方参考设计。
 
@@ -224,7 +224,7 @@ ESP32-PICO-KIT 的尺寸为 52 x 20.3 x 10 mm (2.1" x 0.8" x 0.4")。
 
 * `ESP32-PICO-KIT V4 原理图 <https://dl.espressif.com/dl/schematics/esp32-pico-kit-v4_schematic.pdf>`_ (PDF)
 * `ESP32-PICO-KIT V4.1 原理图 <https://dl.espressif.com/dl/schematics/esp32-pico-kit-v4.1_schematic.pdf>`_ (PDF)
-* `ESP32-PICO-KIT 参考设计 <https://www.espressif.com/zh-hans/support/download/documents/development-board?keys=esp32-pico-kit+参考设计>`_ ，内含 OrCAD 原理图、PCB 布局、Gerbers 和 BOM 表。
+* `ESP32-PICO-KIT 参考设计 <https://www.espressif.com/sites/default/files/documentation/esp32-pico-kit_v4.1_20180314_cn.zip>`_ ，内含 OrCAD 原理图、PCB 布局、Gerbers 和 BOM 表
 * `《ESP32-PICO-D4 技术规格书》 <http://espressif.com/sites/default/files/documentation/esp32-pico-d4_datasheet_cn.pdf>`_ (PDF)
 * :doc:`../../hw-reference/index`