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LSM6DSV 数据表(PDF) 31 Page - STMicroelectronics |
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LSM6DSV 数据表(HTML) 31 Page - STMicroelectronics |
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31 / 187 page  6.4 Gyroscope power modes In the LSM6DSV, the gyroscope can be configured in five different operating modes: power-down mode, sleep mode, low-power mode, high-performance mode and high-accuracy ODR mode. The operating mode selected depends on the value of the OP_MODE_G_[2:0] bits in CTRL2 (11h). If the value of the OP_MODE_G_[2:0] bits is 000 (default), high-performance mode is valid for all ODRs (from 7.5 Hz up to 7.68 kHz). Low-power mode is available for lower ODRs (7.5 Hz, 15 Hz, 30 Hz, 60 Hz, 120 Hz, 240 Hz) and it is enabled by setting the the OP_MODE_G_[2:0] bits to 101. High-accuracy ODR mode is available for ODR values from 15 Hz up to 7.68 kHz and it is enabled by setting the OP_MODE_G_[2:0] bits to 001. Refer to Section 6.5 High-accuracy ODR mode for more details. 6.5 High-accuracy ODR mode High-accuracy ODR (HAODR) mode can be enabled to reduce the part-to-part output data rate variation. It supports accelerometer only, gyroscope only and combo (accelerometer and gyroscope) modes. When this mode is intended to be used for one sensor (accelerometer or gyroscope), the other sensor also has to be configured in high-accuracy ODR (HAODR) mode. The main high-accuracy ODR features are: • Noise level is aligned with high-performance mode • Power consumption increase of 20 μA (typical) vs. the corresponding high-performance mode configuration selected • As for high-performance mode, on-the-fly changes of the sensor output data rate, full scale and bandwidth are supported. The UI channel bandwidth can be selected through the gyroscope LPF1 and accelerometer HPF/LPF2 filters. • When HAODR mode is enabled, it is applied to the UI accelerometer, UI gyroscope, EIS gyroscope, and temperature. It’s not applied to OIS accelerometer/gyroscope channels. Note: HAODR mode has to be enabled / disabled when the device is in power-down mode. When HAODR mode is enabled, the set of the supported ODRs is aligned to nominal high-performance mode ODRs, as shown in the table below. Note: High-accuracy ODR mode is not compatible with the activity/inactivity functionality (motion/stationary can be used). Table 18. Accelerometer and gyroscope ODR selection in high-accuracy ODR mode ODR_XL_ [3:0] ODR_G_[3:0] ODR [Hz] 0000 Power-down 0001 Reserved 0010 Reserved 0011 15 0100 30 0101 60 0110 120 0111 240 1000 480 1001 960 1010 1.92 kHz 1011 3.84 kHz 1100 7.68 kHz Others Reserved LSM6DSV Gyroscope power modes DS13476 - Rev 2 page 31/187 |
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