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FXLS93421 Datasheet(PDF) 81 Page - NXP Semiconductors |
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FXLS93421 Datasheet(HTML) 81 Page - NXP Semiconductors |
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81 / 254 page  NXP Semiconductors FXLS9xxxx Dual channel inertial sensor 11.2.24 Channel 0 and Channel 1 user configuration #2 registers (CH0_CFG_U2, CH1_CFG_U2) The Channel 0 and Channel 1 user configuration #2 registers are user programmable read/write registers which contain channel-specific configuration information. The registers are included in the read/write array error detection. These registers are readable and writable in DSI3 mode, SPI mode, I2C mode or PSI5 programming mode. Location Bit Address Register 7 6 5 4 3 2 1 0 $41 CH0_CFG_U2 U_SNS_ MULT[7] U_SNS_ MULT[6] U_SNS_ MULT[5] U_SNS_ MULT[4] U_SNS_ MULT[3] U_SNS_ MULT[2] U_SNS_ MULT[1] U_SNS_ MULT[0] $49 CH1_CFG_U2 U_SNS_ MULT[7] U_SNS_ MULT[6] U_SNS_ MULT[5] U_SNS_ MULT[4] U_SNS_ MULT[3] U_SNS_ MULT[2] U_SNS_ MULT[1] U_SNS_ MULT[0] Unprogrammed OTP Value 0 0 0 0 0 0 0 0 Table 139. Channel 0 and Channel 1 user configuration #2 registers (CH0_CFG_U2, CH1_CFG_U2) 11.2.24.1 User sensitivity multiplier bits (U_SNS_MULT[7:0]) The user sensitivity multiplier bits are used along with the user sensitivity shift bits to scale the output sensitivity of the device. Equation 1 describes the scaling: (1) Where: TrimSensitivity = The default trimmed sensitivity of the device, as specified in Section 10.6 SensitivityMultiplier = The unsigned multiplier value contained in the U_SNS_MULT[7:0] bits SensitivityShiftFactor = The Shift Factor selected by the U_SNS_SHIFT[1:0] bits as described in Table 140 Device Type U_SNS_SHIFT[1] U_SNS_SHIFT[0] Sensitivity shift factor Normal Range 0 0 0.25 Normal Range 0 1 0.50 Normal Range 1 0 1 Normal Range 1 1 2 Table 140. Sensitivity shift factors Table 141 shows some example user shift and multiplier values for typical full scale ranges (± 2047, 12 bit): FXLS9xxxx All information provided in this document is subject to legal disclaimers. © NXP B.V. 2021. All rights reserved. Product data sheet Rev. 6 — 8 February 2021 81 / 254 |
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