diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/config.mk b/Ubiquitous/XiZi_IIoT/board/ch569w/config.mk
index 6db9c93c7..d87b3d1d1 100644
--- a/Ubiquitous/XiZi_IIoT/board/ch569w/config.mk
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/config.mk
@@ -14,5 +14,6 @@ export DEFINES := -DDEBUG=1
 export ARCH = risc-v
 export MCU =  CH569W
 
-
-
+ifeq ($(CONFIG_BSP_USING_SERDES), y)
+export LINK_BOARD += $(KERNEL_ROOT)/board/ch569w/third_party_driver/serdes/libSERDES.a
+endif
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Kconfig b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Kconfig
index ccc8dac9c..0b8a591b2 100644
--- a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Kconfig
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Kconfig
@@ -13,6 +13,13 @@ menuconfig BSP_USING_SPI
         source "$BSP_DIR/third_party_driver/spi/Kconfig"
     endif
 
+menuconfig BSP_USING_SERDES
+    bool "Using serdes device"
+    default y
+    if BSP_USING_SERDES
+        source "$BSP_DIR/third_party_driver/serdes/Kconfig"
+    endif
+
 menuconfig BSP_USING_WDT
     bool "Using watchdog timer device"
-    default y
+    default n
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Makefile b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Makefile
index b4644627d..6cc73d828 100644
--- a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Makefile
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/Makefile
@@ -10,6 +10,10 @@ ifeq ($(CONFIG_BSP_USING_SPI),y)
   SRC_DIR += spi
 endif
 
+ifeq ($(CONFIG_BSP_USING_SPI),y)
+  SRC_DIR += serdes
+endif
+
 ifeq ($(CONFIG_BSP_USING_WDT),y)
   SRC_DIR += wdt
 endif
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/include/connect_serdes.h b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/include/connect_serdes.h
new file mode 100644
index 000000000..4d125cc3b
--- /dev/null
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/include/connect_serdes.h
@@ -0,0 +1,196 @@
+
+#ifndef __CONNECT_SERDES_H__
+#define __CONNECT_SERDES_H__
+
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "CH56xSFR.h"
+#include "core_riscv.h"
+
+#
+
+#define SDS_ALIGN_EN	(1<<18)
+#define SDS_CONT_EN		(1<<17)
+#define SDS_POWR_UP		(1<<16)
+#define SDS_TX_PU		(1<<15)
+#define SDS_RX_PU		(1<<14)
+#define SDS_PLL_PU		(1<<13)
+#define	SDS_PLL_DIV		(18<<8) // 60*(DIV+2)MHz
+#define	SDS_PLL_1_2G	(18<<8) // 60*(18+2)MHz
+#define	SDS_PLL_900M	(13<<8) // 60*(13+2)MHz
+#define	SDS_PLL_600M	( 8<<8) // 60*(8+2)MHz
+
+#define SDS_DMA_EN              1<<7
+#define SDS_TX_EN		1<<6
+#define SDS_RX_EN		1<<5
+#define SDS_RX_POLAR 	1<<4
+#define SDS_INT_BUSY_EN 1<<3
+#define PHY_RESET 		1<<2
+#define LINK_RESET 		1<<1
+#define SDS_ALL_CLR 	1<<0
+
+#define SDS_LINK_INIT	1<<16
+#define SDS_TX_START	((uint32_t)1<<17)
+#define SDS_BUF_MODE	1<<18
+
+#define SDS_PHY_RDY_EN    1<<0
+#define SDS_TX_INT_EN     1<<1
+#define SDS_RX_ERR_EN     1<<1
+#define SDS_RX_INT_EN     1<<2
+#define SDS_FIFO_OV_EN    1<<3
+#define SDS_COMMA_INT_EN  1<<5
+#define ALL_INT_TYPE      47
+
+#define SDS_PHY_RDY_FLG 	1<<0
+#define SDS_TX_INT_FLG		1<<1
+#define	SDS_RX_INT_FLG		1<<2
+#define	SDS_FIFO_OV_FLG		1<<3
+#define	SDS_COMMA_INT_FLG	1<<5
+#define ALL_INT_FLG         47
+
+#define SDS_SEQ_MATCH	1<<17
+#define SDS_RX_CRC_OK	1<<18
+#define SDS_PLL_READY	1<<19
+#define SDS_TX_READY	1<<20
+
+#define SDS_RX_BUF		1<<24
+#define SDS_TX_BUF		1<<28
+
+#define SDS_TX_NUMP_1	1<<20
+#define SDS_TX_NUMP_2	2<<20
+#define SDS_TX_NUMP_3	3<<20
+#define SDS_TX_NUMP_4	4<<20
+
+/*******************************************************************************
+* Function Name  : Serdes_Tx_Init
+* Description    : Serdes configuration of hardware in Tx mode
+* Input          : None
+* Return         : None
+*******************************************************************************/
+extern void Serdes_Tx_Init(void);
+
+/*******************************************************************************
+* Function Name  : Serdes_Rx_init
+* Description    : Serdes configuration of hardware in Rx mode
+* Input          : None
+* Return         : None
+*******************************************************************************/
+extern UINT8 Serdes_Rx_Init(UINT32 cnt);
+
+/*******************************************************************************
+* Function Name  : DMA_Tx_CFG
+* Description    : Configure DMA transmitting mode
+* Input          : DMAaddr: DMA starting address
+*                  Tx_len : length of transmitting data once
+*                  custom_number: customized data using for data checking
+* Return         : None
+*******************************************************************************/
+extern void DMA_Tx_CFG( UINT32 DMAaddr, UINT32 Tx_len, UINT32 custom_number);
+
+/*******************************************************************************
+* Function Name  : DoubleDMA_Rx_CFG
+* Description    : Configure double DMA receiving mode
+* Input          : DMA0_addr: DMA0 starting address
+                   DMA1_addr: DMA1 starting address
+* Return         : None
+*******************************************************************************/
+extern void DoubleDMA_Rx_CFG( UINT32 DMA0_addr , UINT32 DMA1_addr );
+
+/*******************************************************************************
+* Function Name  : DMA_Tx
+* Description    : DMA start sending data
+* Input          : None
+* Return         : None
+*******************************************************************************/
+extern void DMA_Tx(void);
+
+/*******************************************************************************
+* Function Name  : DMA_Rx_check
+* Description    : double DMA receiving data
+* Input          : DMA0_addr--DMA0 address
+                   DMA1_addr--DMA1 address
+                   custom_number: customized data using for data checking,
+                                  consistent with the transmitting one
+* Return         : None
+*******************************************************************************/
+extern void DMA_Rx_check( UINT32 DMA0_addr, UINT32 DMA1_addr, UINT32 custom_number);
+
+/*******************************************************************************
+* Function Name  : ClearITFlag
+* Description    : Clear interruption flag
+* Input          : ITFlag:
+                      1.SDS_PHY_RDY_FLG
+                      2.SDS_TX_INT_FLG
+                      3.SDS_RX_INT_FLG
+                      4.SDS_FIFO_OV_FLG
+                      5.SDS_COMMA_INT_FLG
+                      6.ALL_INT_FLG
+* Return         : None
+*******************************************************************************/
+extern void ClearITFlag( UINT16 ITFlag);
+
+/*******************************************************************************
+* Function Name  : EnableIT
+* Description    : Enable Interrupt
+* Input          : ITType:
+                      1.SDS_PHY_RDY_EN
+                      2(1).SDS_TX_INT_EN      (Tx mode)
+                      2(2).SDS_RX_ERR_EN      (Rx mode) 
+                      3.SDS_RX_INT_EN
+                      4.SDS_FIFO_OV_EN
+                      5.SDS_COMMA_INT_EN
+                      6.ALL_INT_TYPE
+* Return         : None
+*******************************************************************************/
+extern void EnableIT( UINT16 ITType);
+
+/*******************************************************************************
+* Function Name  : Wait_Txdone
+* Description    : waiting for Tx done
+* Input          : None
+* Return         : None
+*******************************************************************************/
+extern void Wait_Txdone(void);
+
+/*******************************************************************************
+* Function Name  : Wait_commadone
+* Description    : waiting for Rx COMMA done
+* Input          : None
+* Return         : None
+*******************************************************************************/
+extern UINT8 Wait_commadone(UINT32 cnt);
+
+/*******************************************************************************
+* Function Name  : ReadRxFlagBit
+* Description    : read Rx IT status
+* Input          : None
+* Return         : None
+*******************************************************************************/
+extern UINT32 ReadITFlagBit(UINT16 ITFlag);
+
+/*******************************************************************************
+* Function Name  : ReadCOMMAFlagBit
+* Description    : read COMMA IT status
+* Input          : None
+* Return         : None
+*******************************************************************************/
+extern UINT32 ReadCOMMAFlagBit(void);
+
+/*******************************************************************************
+* Function Name  : serdes_Rx_init
+* Description    : receiver module initialization
+* Input          : None
+* Return         : None
+*******************************************************************************/
+extern void serdes_Rx_init(void);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/Kconfig b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/Kconfig
new file mode 100644
index 000000000..47ea6f04b
--- /dev/null
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/Kconfig
@@ -0,0 +1,7 @@
+config SERDES_TRANS
+        bool "Config serdes transmit mode."
+        default y
+
+config SERIAL_RECEI
+        bool "Config serdes receive mode."
+        default y
\ No newline at end of file
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/Makefile b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/Makefile
new file mode 100644
index 000000000..2b985267c
--- /dev/null
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/Makefile
@@ -0,0 +1,3 @@
+SRC_FILES := connect_serdes.c
+
+include $(KERNEL_ROOT)/compiler.mk
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/connect_serdes.c b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/connect_serdes.c
new file mode 100644
index 000000000..06d6b68e1
--- /dev/null
+++ b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/connect_serdes.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright (c) 2020 AIIT XUOS Lab
+ * XiUOS is licensed under Mulan PSL v2.
+ * You can use this software according to the terms and conditions of the Mulan
+ * PSL v2. You may obtain a copy of Mulan PSL v2 at:
+ *        http://license.coscl.org.cn/MulanPSL2
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY
+ * KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
+ * NON-INFRINGEMENT, MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE. See the
+ * Mulan PSL v2 for more details.
+ */
+
+/**
+ * @file connect_usart.c
+ * @brief support ch569 uart function and register to bus framework
+ * @version 1.0
+ * @author AIIT XUOS Lab
+ * @date 2025-04-07
+ */
+
+#include "CH56x_common.h"
+#include "xizi.h"
+#include "board.h"
+#include "shell.h"
+#include "connect_serdes.h"
+
+
+//#define Trans 1
+//#define Recei 1
+
+//UINT32  Tx_DMAaddr   = 0x20020000;
+//UINT32  RX_DMA0_addr = 0x20033330;
+//UINT32  RX_DMA1_addr = 0x20034330;
+UINT32 Tx_DMAaddr[512] __attribute__((aligned(16))) = {0};
+UINT32 RX_DMA0_addr[512] __attribute__((aligned(16))) = {0};
+UINT32 RX_DMA1_addr[512] __attribute__((aligned(16))) = {0};
+
+volatile UINT32  i=0;
+volatile UINT32  k=0;
+/*******************************************************************************
+* Function Name  : __attribute__((interrupt()))
+* Description    : SERDES_IRQHandler hard push
+* Input          : baudrate: UART1 communication baud rate.
+* Return         : None
+*******************************************************************************/
+void SERDES_IRQHandler (void) __attribute__((interrupt()));
+
+/*******************************************************************************
+* Function Name  : SerdesTxTest
+* Description    : SerdesTxTest program.
+* Input          : None
+* Return         : None
+*******************************************************************************/
+int SerdesTxTest(void)
+{
+    UINT32 *p32_txdma = (UINT32 *)Tx_DMAaddr;
+    UINT32 n=0;
+    UINT32 data=0;
+
+    KPrintf("SerdesTxTest start\r\n");
+    KPrintf("SerdesTxTest Tx_DMAaddr=0x%08x\r\n", (UINT32)Tx_DMAaddr);
+
+#ifdef SERDES_TRANS        //Serdes query sent.
+    Serdes_Tx_Init();
+
+    do
+    {
+        *p32_txdma++ = data;
+        data += 0x01010101;
+        n++;
+    }while(n!=512);
+    mDelaymS(500);
+
+    DMA_Tx_CFG( (UINT32)Tx_DMAaddr,2048,0x555555);               //512 address spaces  2048 bytes
+
+    while(1)
+    {
+        KPrintf("SerdesTxTest DMA_Tx\r\n");
+        DMA_Tx();
+        Wait_Txdone();
+        ClearITFlag(SDS_TX_INT_FLG);
+        mDelaymS(5000);
+    }
+#endif
+
+}
+
+/*******************************************************************************
+* Function Name  : SerdesRxTest
+* Description    : SerdesRxTest program.
+* Input          : None
+* Return         : None
+*******************************************************************************/
+int SerdesRxTest(void)
+{
+	KPrintf("SerdesRxTest start\r\n");
+	KPrintf("SerdesRxTest RX_DMA0_addr=0x%08x RX_DMA1_addr=0x%08x\r\n", (UINT32)RX_DMA0_addr, (UINT32)RX_DMA1_addr);
+
+#ifdef SERIAL_RECEI       // Serdes interrupt reception.
+	PFIC_EnableIRQ(INT_ID_SERDES);
+
+	DoubleDMA_Rx_CFG((UINT32)RX_DMA0_addr , (UINT32)RX_DMA1_addr );
+	Serdes_Rx_Init(10*1000*1000);
+    Wait_commadone(10*1000*1000);
+    Serdes_Rx_Init(10*1000*1000);
+	EnableIT(SDS_RX_INT_EN|SDS_COMMA_INT_EN);
+	
+	KPrintf("SerdesRxTest init OK\r\n");
+    while(1)
+    {
+        if(k==2)        // After each completion of the double-buffered reception, print the received data.
+        {
+            for(i=0;i<512;i++)
+            {
+                KPrintf("%x\r\n",*(UINT32 *)(0x20033330+4*i));
+                KPrintf("%x\r\n",*(UINT32 *)(0x20034330+4*i));
+            }
+            k=0;
+        }
+    }
+#endif
+}
+
+/*******************************************************************************
+* Function Name  : SERDES_IRQHandler
+* Description    : Interruption function
+* Input          : None
+* Return         : None
+*******************************************************************************/
+void SERDES_IRQHandler (void)
+{
+	if(ReadITFlagBit(SDS_RX_INT_FLG))
+	{
+		ClearITFlag(SDS_RX_INT_FLG);
+		k++;
+		DMA_Rx_check((UINT32)RX_DMA0_addr, (UINT32)RX_DMA1_addr, 0x555555);
+		KPrintf("\nbuffer received ....... !\n");
+	}
+	if(ReadITFlagBit(SDS_COMMA_INT_FLG))
+	{
+		KPrintf("\nreceive COMMA, init....... !\n");
+		Serdes_Rx_Init( 1000*30 );
+		i = 0;
+		mDelaymS(50);
+		ClearITFlag(SDS_COMMA_INT_FLG);
+	}
+}
+
+
+SHELL_EXPORT_CMD(SHELL_CMD_PERMISSION(0) | SHELL_CMD_TYPE(SHELL_TYPE_CMD_MAIN),
+                 SerdesTxTest, SerdesTxTest, test serdes tx);
+
+SHELL_EXPORT_CMD(SHELL_CMD_PERMISSION(0) | SHELL_CMD_TYPE(SHELL_TYPE_CMD_MAIN),
+                 SerdesRxTest, SerdesRxTest, test serdes rx);
diff --git a/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/libSERDES.a b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/libSERDES.a
new file mode 100644
index 000000000..1d9b91a31
Binary files /dev/null and b/Ubiquitous/XiZi_IIoT/board/ch569w/third_party_driver/serdes/libSERDES.a differ
diff --git a/Ubiquitous/XiZi_IIoT/link.mk b/Ubiquitous/XiZi_IIoT/link.mk
index fa76da46c..00e8eb95b 100644
--- a/Ubiquitous/XiZi_IIoT/link.mk
+++ b/Ubiquitous/XiZi_IIoT/link.mk
@@ -3,7 +3,7 @@ OBJS := $(shell cat make.obj)
 $(TARGET): $(OBJS)
 	@echo ------------------------------------------------
 	@echo link $(TARGET)
-	@$(CROSS_COMPILE)g++ -o $@ $($(LINK_FLAGS)) $(OBJS) $(LINK_LWIP) $(LINK_MUSLLIB) $(LINK_MONGOOSE) $(LINK_WCH_NET) $(LIBCC) $(LINK_WCH_BLE)
+	@$(CROSS_COMPILE)g++ -o $@ $($(LINK_FLAGS)) $(OBJS) $(LINK_LWIP) $(LINK_MUSLLIB) $(LINK_MONGOOSE) $(LINK_WCH_NET) $(LIBCC) $(LINK_WCH_BLE) $(LINK_BOARD)
 	@echo ------------------------------------------------
 	@$(CROSS_COMPILE)objcopy -O binary $@ XiZi-$(BOARD)$(COMPILE_TYPE).bin
 	@$(CROSS_COMPILE)objdump -S $@ > XiZi-$(BOARD)$(COMPILE_TYPE).asm