diff --git a/usb/ddk/v1_0/IUsbDdk.idl b/usb/ddk/v1_0/IUsbDdk.idl
index ea075e09350c87efb368ce78e19a8f41ac2bbe9e..9cc2ac94712c07b00ebe27f4fa971e326f052c7e 100644
--- a/usb/ddk/v1_0/IUsbDdk.idl
+++ b/usb/ddk/v1_0/IUsbDdk.idl
@@ -169,6 +169,20 @@ interface IUsbDdk
      */
     SendPipeRequest([in] struct UsbRequestPipe pipe, [in] unsigned int size, [in] unsigned int offset, [in] unsigned int length, [out] unsigned int transferedLength);
 
+    /* *
+     * @brief Sends a pipe request. This API works in a synchronous manner. This API applies to interrupt transfer\n
+     * and bulk transfer.
+     *
+     * @param pipe Pipe used to transfer data.
+     * @param ashmem Share memory used to transfer data;
+     * @param transferredLength Length of the transferred data;
+     *
+     * @return <b>0</b> if the operation is successful; a negative value otherwise.
+     * @since 5.0
+     * @version 1.0
+     */
+    SendPipeRequestWithAshmem([in] struct UsbRequestPipe pipe, [in] UsbAshmem ashmem, [out] unsigned int transferredLength);
+
     /* *
      * @brief Gets the file descriptor for memory mapping.
      *
diff --git a/usb/ddk/v1_0/UsbDdkTypes.idl b/usb/ddk/v1_0/UsbDdkTypes.idl
index 033752c8cd158c9404e705c243b5965a70cf55d9..6ed8bd4575a073a503a37dc68bd061d8003847d3 100644
--- a/usb/ddk/v1_0/UsbDdkTypes.idl
+++ b/usb/ddk/v1_0/UsbDdkTypes.idl
@@ -99,4 +99,29 @@ struct UsbRequestPipe {
    unsigned int timeout;
    /** Endpoint address. */
    unsigned char endpoint;
+};
+
+/**
+ * @brief Usb Ashmem.
+ *
+ * @since 5.0
+ * @version 1.0
+ */
+struct UsbAshmem {
+    /** File descriptor of the shared memory. */
+    FileDescriptor ashmemFd;
+    /** Buffer address. */
+    unsigned char[] address;
+    /** Buffer size. */
+    unsigned int size;
+    /** Offset of the used buffer. The default value is 0, which indicates that there is no offset\n
+     * and the buffer starts from the specified address.
+     */
+    unsigned int offset;
+    /** Length of the used buffer. By default, the value is equal to the size, which indicates that\n
+     * the entire buffer is used.
+     */
+    unsigned int bufferLength;
+    /** Length of the transferred data. */
+    unsigned int transferredLength;
 };
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