TCIC_R_AUX
val = bus_space_read_2(iot, ioh, TCIC_R_AUX);
#define TCIC_R_TCTL_6US (TCIC_R_AUX + 0) /* the byte access handle */
#define TCIC_R_TCTL_10US (TCIC_R_AUX + 1) /* the byte access handle */
#define TCIC_R_PULSE_LO (TCIC_R_AUX + 0)
#define TCIC_R_PULSE_HI (TCIC_R_AUX + 1)
#define TCIC_R_WCTL_WAIT (TCIC_R_AUX + 0) /* the wait state control byte */
#define TCIC_R_WCTL_XCSR (TCIC_R_AUX + 1) /* extended control/status */
#define TCIC_R_PDATA_LO (TCIC_R_AUX + 0)
#define TCIC_R_PDATA_HI (TCIC_R_AUX + 1)
#define TCIC_R_ILOCK_ID (TCIC_R_AUX + 1)
#define TCIC_R_TEST (TCIC_R_AUX + 0)
val = bus_space_read_2(iot, ioh, TCIC_R_AUX);
bus_space_write_2(iot, ioh, TCIC_R_AUX, val);