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LSM6DSV 数据表(PDF) 33 Page - STMicroelectronics |
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LSM6DSV 数据表(HTML) 33 Page - STMicroelectronics |
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33 / 187 page  6.6.1 Block diagrams of the accelerometer filters In the LSM6DSV, the filtering chain for the accelerometer part is composed of the following: • Digital filter (LPF1) • Composite filter Details of the block diagram appear in the following figure. Figure 18. Accelerometer UI chain Digital LP Filter OP_MODE_XL_[2:0] ODR_XL_[3:0] LPF1 Composite Filter ADC Figure 19. Accelerometer composite filter SLOPE FILTER 000 001 010 … 111 SPI / I2C / MIPI I3C 1 0 HP_SLOPE_XL_EN LPF2_XL_EN 0 1 Digital HP Filter HP_LPF2_XL_BW_[2:0] Digital LP Filter LPF2 S/D Tap 6D / 4D 0 1 LOW_PASS_ON_6D 1 0 SLOPE_FDS Wake-up Activity / Inactivity Free-fall Embedded functions FIFO USER OFFSET 0 1 USR_OFF_ON_OUT USR_OFF_W OFS_USR_[7:0] 1 0 USR_OFF_ON_WU LPF1 Output (1) ® HP_LPF2_XL_BW_[2:0] HP_LPF2_XL_BW_[2:0] 1. The cutoff value of the LPF1 output is ODR/2 when the accelerometer is in high-performance mode, high-accuracy ODR mode or normal mode. This value is equal to 2300 Hz when the accelerometer is in low-power mode 1 (2 mean), 912 Hz in low-power mode 2 (4 mean) or 431 Hz in low-power mode 3 (8 mean). Note: Embedded functions include the finite state machine, pedometer, step detector and step counter, significant motion detection, and tilt functions. LSM6DSV Block diagram of filters DS13476 - Rev 2 page 33/187 |
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