#define MAX3100_CTS (1 << 9) /* clear-to-send bit (inverted ~CTS pin) */
/* data register bits (both directions) */
-#define MAX3100_R (1 << 15) /* receive bit */
+#define MAX3100_R (1 << 15) /* receive bit */
#define MAX3100_T (1 << 14) /* transmit bit */
#define MAX3100_P (1 << 8) /* parity bit */
#define MAX3100_D_MASK 0x00FF /* data bits mask */