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FXLS8971CF Datasheet(PDF) 68 Page - NXP Semiconductors |
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FXLS8971CF Datasheet(HTML) 68 Page - NXP Semiconductors |
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68 / 100 page  NXP Semiconductors FXLS8971CF 3-Axis Low-g Accelerometer Orientation X/Y axis g-levels PU y ~ –1 g, x ~ 0 PD y ~ +1 g, x ~ 0 LR y ~ 0, x ~ +1 g LL y ~ 0, x ~ –1 g Table 95. Orientation change ideal orientation angle definitions 15.5 Sensor Data Change Detection (SDCD) registers The Sensor Data Change Detection (SDCD) function is an inertial event detection function available to assist host software algorithms in detecting various inertial events such as motion/no-motion, high-g/low-g, tap/double tap, and transient acceleration events. 1 0 WINDOW COMPARATOR SDCD_UTHS[11:0] SDCD_LTHS[11:0] OUT_X[n], OUT_Y[n], OUT_Z[n] X_OT_EN Y_OT_EN Z_OT_EN X_OT Y_OT Z_OT X_WT_EN Y_WT_EN Z_WT_EN OT_DBCTM REF_X[n], REF_Y[n], REF_Z[n] REF_UPDM[1:0] X_POL Y_POL Z_POL X_WT_EF Y_WT_EF Z_WT_EF X_WT_EN Y_WT_EN WT_LOG_SEL WT_ELE WT_EA aaa-027616 OT_EA X_OT_EF_POL Y_OT_EF_POL Z_OT_EF_POL SDCD_OT_DBCNT[7:0] WT_DBCTM SDCD_WT_DBCNT[7:0] Y_OT_EF Z_OT_EF X_OT_EF X_WT_EF Y_WT_EF Z_WT_EF X_WT_EF Y_WT_EF Z_WT_EF SDCD_EN 11 01 00 10 OT_ELE WT_ELE Z_WT_EN MUX VECM[n] MODE SATURATOR Z_OT_DBCNT_INT[7:0] W_DBCNT_INT[7:0] Y_OT_DBCNT_INT[7:0] X_OT_DBCNT_INT[7:0] LATCH LATCH LATCH LATCH LATCH LATCH LATCH LATCH 12 12 12 12 12 12 12 12 12 12 13 2 12 X_WT_EF Y_WT_EF Z_WT_EF X_WT_EN Y_WT_EN Z_WT_EN Figure 20. SDCD Function Block Diagram 15.5.1 SDCD_INT_SRC1 register (address 2Dh) This register contains the SDCD outside-of-thresholds event status flags. If mapped to one of the INT1 or INT2 pins, the OT_EA flag may be used to signal interrupts to a host processor. Bit 7 6 5 4 3 2 1 0 Name OT_EA — X_OT_EF X_OT_POL Y_OT_EF Y_OT_POL Z_OT_EF Z_OT_POL Reset 0 0 0 0 0 0 0 0 Access R R R R R R R R Table 96. SDCD_INT_SRC1 register (address 2Dh) bit allocation FXLS8971CF All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved. Product data sheet Rev. 2.1 — 7 March 2024 68 / 100 |
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