diff --git a/include/ixsync.hpp b/include/ixsync.hpp
index 91674df..6a93aaa 100644
--- a/include/ixsync.hpp
+++ b/include/ixsync.hpp
@@ -201,6 +201,10 @@ class IXsync {
    *
    */
 
+  virtual xs_error_code_t InternalSigSrouce_start()             = 0;
+  virtual xs_error_code_t InternalSigSrouce_stop()              = 0;
+  virtual xs_error_code_t InternalSigSrouce_readState(bool &en) = 0;
+
   virtual xs_error_code_t InternalTimecode_setFormat(TimecodeFormat_t format)  = 0;
   virtual xs_error_code_t InternalTimecode_getFormat(TimecodeFormat_t &format) = 0;
   virtual xs_error_code_t InternalTimecode_setCode(XsyncTimecode_t timecode)   = 0;
@@ -212,6 +216,10 @@ class IXsync {
   virtual xs_error_code_t InternalClock_setFreq(float freq)  = 0;
   virtual xs_error_code_t InternalClock_getFreq(float &freq) = 0;
 
+  /*******************************************************************************
+   *                                 系统时钟源                                  *
+   *******************************************************************************/
+
   virtual xs_error_code_t SysTimecode_setSource(uint32_t sig)              = 0;
   virtual xs_error_code_t SysTimecode_getSource(uint32_t &sig)             = 0;
   virtual xs_error_code_t SysTimecode_readFormat(TimecodeFormat_t &format) = 0;
diff --git a/include/xsync_regs.hpp b/include/xsync_regs.hpp
index ce7f9b3..79428c3 100644
--- a/include/xsync_regs.hpp
+++ b/include/xsync_regs.hpp
@@ -16,24 +16,26 @@ using namespace std;
 #define REG_ADD_OFF_STM32                  (0x0000)
 #define REG_ADD_OFF_STM32_CONFIG_START_ADD (0x0010)
 
-#define REGADDOFF__FPGA_INFO            (0x0020)
-#define REGADDOFF__TTLIN                (0x0100)
-#define REGADDOFF__EXTERNAL_TIMECODE    (0x0120)
-#define REGADDOFF__EXTERNAL_GENLOCK     (0x0130)
-#define REGADDOFF__INTERNAL_TIMECODE    (0x0300)
-#define REGADDOFF__INTERNAL_GENLOCK     (0x0310)
-#define REGADDOFF__INTERNAL_CLOCK       (0x0320)
-#define REGADDOFF__TTLOUT1              (0x0200)
-#define REGADDOFF__TTLOUT2              (0x0210)
-#define REGADDOFF__TTLOUT3              (0x0220)
-#define REGADDOFF__TTLOUT4              (0x0230)
-#define REGADDOFF__TIMECODE_OUT         (0x0240)
-#define REGADDOFF__GENLOCK_OUT          (0x0250)
-#define REGADDOFF__CAMERA_SYNC_OUT      (0x0260)
-#define REGADDOFF__SYS_TIMECODE         (0x0400)
-#define REGADDOFF__SYS_GENLOCK          (0x0410)
-#define REGADDOFF__SYS_CLOCK            (0x0420)
-#define REGADDOFF__RECORD_SIG_GENERATOR (0x0500)
+#define REGADDOFF__FPGA_INFO                (0x0020)
+#define REGADDOFF__TTLIN                    (0x0100)
+#define REGADDOFF__EXTERNAL_TIMECODE        (0x0120)
+#define REGADDOFF__EXTERNAL_GENLOCK         (0x0130)
+#define REGADDOFF__INTERNAL_TIMECODE        (0x0300)
+#define REGADDOFF__INTERNAL_GENLOCK         (0x0310)
+#define REGADDOFF__INTERNAL_CLOCK           (0x0320)
+#define REGADDOFF__INTERNAL_SIG_EN_CONTRLER (0x03A0)
+#define REGADDOFF__TTLOUT1                  (0x0200)
+#define REGADDOFF__TTLOUT2                  (0x0210)
+#define REGADDOFF__TTLOUT3                  (0x0220)
+#define REGADDOFF__TTLOUT4                  (0x0230)
+#define REGADDOFF__TIMECODE_OUT             (0x0240)
+#define REGADDOFF__GENLOCK_OUT              (0x0250)
+#define REGADDOFF__CAMERA_SYNC_OUT          (0x0260)
+#define REGADDOFF__SYS_TIMECODE             (0x0400)
+#define REGADDOFF__SYS_GENLOCK              (0x0410)
+#define REGADDOFF__SYS_CLOCK                (0x0420)
+#define REGADDOFF__RECORD_SIG_GENERATOR     (0x0500)
+#define REGADDOFF__DELAYER                  (0x0600)
 
 typedef enum {
   /**
@@ -232,6 +234,15 @@ typedef enum {
   internal_clock_en        = REGADDOFF__INTERNAL_CLOCK + 2,
   internal_clock_freq      = REGADDOFF__INTERNAL_CLOCK + 3,
 
+  // REGADDOFF__INTERNAL_SIG_EN_CONTRLER
+
+  /*******************************************************************************
+   *                                  内部时钟源控制器                             *
+   *******************************************************************************/
+
+  internal_sig_en_contrler_module = REGADDOFF__INTERNAL_SIG_EN_CONTRLER + 0,
+  internal_sig_en_contrler_en     = REGADDOFF__INTERNAL_SIG_EN_CONTRLER + 1,
+
   /*******************************************************************************
    *                                  SYSCLOCK                                   *
    *******************************************************************************/
diff --git a/src/xsync_v2.cpp b/src/xsync_v2.cpp
index 5a59f49..3c68e8e 100644
--- a/src/xsync_v2.cpp
+++ b/src/xsync_v2.cpp
@@ -317,6 +317,19 @@ class Xsync : public IXsync {
 
   virtual xs_error_code_t ExternalGenlock_detectFreq(float &freq) override;
 
+  virtual xs_error_code_t InternalSigSrouce_start() override {  //
+    DO_XSYNC(reg_write(reg::internal_sig_en_contrler_en, 0x7, 10));
+  }
+  virtual xs_error_code_t InternalSigSrouce_stop() override {  //
+    DO_XSYNC(reg_write(reg::internal_sig_en_contrler_en, 0x0, 10));
+  }
+  virtual xs_error_code_t InternalSigSrouce_readState(bool &en) override {
+    uint32_t en_u32;
+    DO_XSYNC(reg_read(reg::internal_sig_en_contrler_en, en_u32, 10));
+    en = en_u32;
+    return kxs_ec_success;
+  }
+
   virtual xs_error_code_t InternalTimecode_setFormat(TimecodeFormat_t format) override;
   virtual xs_error_code_t InternalTimecode_getFormat(TimecodeFormat_t &format) override;
   virtual xs_error_code_t InternalTimecode_setCode(XsyncTimecode_t timecode) override;