+/* WRITE_MODE register fields. */
+#define WMR_SDRAMWRITEEN (1 << 0)
+#define WMR_SDRAMREADEN (1 << 1)
+#define WMR_TRGRES (1 << 2)
+#define WMR_TRGEN (1 << 3)
+#define WMR_FORCESTOP (1 << 4)
+#define WMR_TRGSW (1 << 5)
+/* not used: bit position 6 */
+#define WMR_SDRAMINIT (1 << 7)
+
+/* READ_MODE register fields. */
+#define RMR_SDRAMWRITEEN (1 << 0)
+#define RMR_SDRAMREADEN (1 << 1)
+/* not used: bit position 2 */
+#define RMR_TRGEN (1 << 3)
+#define RMR_ROUND (1 << 4)
+#define RMR_TRIGGERED (1 << 5)
+#define RMR_POSTTRIGGERED (1 << 6)
+/* not used: bit position 7 */
+