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MMA8450QT Datasheet(PDF) 30 Page - Freescale Semiconductor, Inc |
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MMA8450QT Datasheet(HTML) 30 Page - Freescale Semiconductor, Inc |
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30 / 57 page  Sensors Freescale Semiconductor 30 MMA8450Q 0x20 - 0x22 PL_L_P_THS_REG1, 2, 3 Landscape-to-Portrait Threshold Registers The following registers represent the Landscape-to-Portrait trip threshold registers. These registers are used to set the trip angle for the image transition from the Landscape orientation to the Portrait orientation. The angle can be selected from Table 32 and the corresponding values for that angle should be written into the three PL_L_P_THS Registers. Table 27. PL_P_L_THS_REG3 Description P_L_THS Portrait-to-Landscape Threshold Register 3. Default value: 30° → 1101_0100. Table 28. Portrait-to-Landscape Trip Angle Thresholds Look-up Table Portrait-to-Landscape Trip Angle PL_P_L_THS_REG1 PL_P_L_THS_REG2 PL_P_L_THS_REG3 15 0x17 0x75 0x77 20 0x18 0x14 0x23 25 0x18 0xF3 0x59 30 0x1A 0xA2 0x77 35 0x1B 0x1A 0x1A 40 0x1D 0x92 0x33 45 0x20 0x00 0x00 50 0x23 0x31 0xD9 55 0x27 0x71 0xBA 60 0x2D 0x41 0xA2 0x20 PL_L_P_THS_REG1 Register (Read/Write) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 L_P_THS[7] L_P_THS[6] L_P_THS[5] L_P_THS[4] L_P_THS[3] L_P_THS[2] L_P_THS[1] L_P_THS[0] Table 29. PL_L_P_THS_REG1 Description L_P_THS Landscape-to-Portrait Threshold Register 1. Default value: 60° → 0010_1101. 0x21 PL_L_P_THS_REG2 Register (Read/Write) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 L_P_THS[7] L_P_THS[6] L_P_THS[5] L_P_THS[4] L_P_THS[3] L_P_THS[2] L_P_THS[1] L_P_THS[0] Table 30. PL_L_P_THS_REG2 Description L_P_THS Landscape-to-Portrait Threshold Register 2. Default value: 60° → 0100_0001. 0x22 PL_L_P_THS_REG3 Register (Read/Write) Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 L_P_THS[7] L_P_THS[6] L_P_THS[5] L_P_THS[4] L_P_THS[3] L_P_THS[2] L_P_THS[1] L_P_THS[0] Table 31. PL_L_P_THS_REG3 Description L_P_THS Landscape-to-Portrait Threshold Register 3. Default value: 60° → 1010_0010. Table 32. Landscape-to-Portrait Trip Angle Thresholds Look-up Table Landscape-to-Portrait Trip Angle PL_L_P_THS_REG1 PL_L_P_THS_REG2 PL_L_P_THS_REG3 30 0x1A 0x22 0xD4 35 0x1B 0xA2 0x77 40 0x1D 0x92 0x33 45 0x20 0x00 0x00 50 0x23 0x31 0xD9 |
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