diff --git a/os/arch/arm/src/amebasmart/amebasmart_i2s.c b/os/arch/arm/src/amebasmart/amebasmart_i2s.c
index 66d0898951..356ff3a79a 100644
--- a/os/arch/arm/src/amebasmart/amebasmart_i2s.c
+++ b/os/arch/arm/src/amebasmart/amebasmart_i2s.c
@@ -120,7 +120,7 @@
 #define OVER_SAMPLE_RATE (384U)
 
 #define I2S_DMA_PAGE_SIZE 4096 	/* 4 ~ 16384, set to a factor of APB size */
-#define I2S_DMA_PAGE_NUM 4	/* Vaild number is 2~4 */
+#define I2S_DMA_PAGE_NUM 8	/* Vaild number is 2~8 */
 
 #ifdef CONFIG_PM
 static volatile bool i2s_lock_state = 0;
diff --git a/os/board/rtl8730e/src/component/mbed/targets/hal/rtl8730e/i2s_api.c b/os/board/rtl8730e/src/component/mbed/targets/hal/rtl8730e/i2s_api.c
index 7253db97e7..52ab23d4c7 100755
--- a/os/board/rtl8730e/src/component/mbed/targets/hal/rtl8730e/i2s_api.c
+++ b/os/board/rtl8730e/src/component/mbed/targets/hal/rtl8730e/i2s_api.c
@@ -20,7 +20,7 @@
 #include "ameba_audio_clock.h"
 #include "amebasmart_i2s.h"
 
-#define SP_MAX_DMA_PAGE_NUM 8
+#define SP_MAX_DMA_PAGE_NUM 9
 
 /** @addtogroup Ameba_Mbed_API
   * @{