diff --git a/include/hardware.h b/include/hardware.h
index 69b638c6..d2302376 100644
--- a/include/hardware.h
+++ b/include/hardware.h
@@ -5,6 +5,9 @@
 
 #define AI_STATUS_REG 0x0450000C
 #define AI_LEN_REG 0x04500004
+#define AI_CONTROL_REG 0x04500008
 #define AI_STATUS_AI_FULL (1 << 31)
+#define AI_DACRATE_REG 0x04500010
+#define AI_BITRATE_REG 0x04500014
 
 #endif
\ No newline at end of file