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FXLS93421 Datasheet(PDF) 159 Page - NXP Semiconductors |
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FXLS93421 Datasheet(HTML) 159 Page - NXP Semiconductors |
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159 / 254 page  NXP Semiconductors FXLS9xxxx Dual channel inertial sensor The device ignores the Register Write command if the command is sent to any other physical address, including the DSI Global Device Address of '0000', with one exception as explained in Section 12.3.4.3. The Register Write command uses the byte address definitions shown in Section 11.1. Writable registers along with their Byte addresses are shown in Section 11.1. Address Command Data PA3 PA2 PA1 PA0 C3 C2 C1 C0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 CRC PA[3] PA[2] PA[1] PA[0] 1 0 0 0 RA[7] RA[6] RA[5] RA[4] RA[3] RA[2] RA[1] RA[0] RD[7] RD[6] RD[5] RD[4] RD[3] RD[2] RD[1] RD[0] 8 bits Table 236. Register write command format Bit field Definition PA[3:0] DSI physical address. This field contains the physical address. This field must match the PADDR[3:0] bits in the PHYSADDR register. Otherwise, the command is ignored. C[3:0] Register Write Command = 1000' RA[7:0] RA[7:0] contains the byte address of the register to be read. RD[7:0] RD[7:0] contains the data to be written to the register addressed by RA[7:0]. Table 237. Register write command format description Address Command Data PA3 PA2 PA1 PA0 C3 C2 C1 C0 D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 CRC PA[3] PA[2] PA[1] PA[0] 1 0 0 0 RD[15] RD[14] RD[13] RD[12] RD[11] RD[10] RD[9] RD[8] RD[7] RD[6] RD[5] RD[4] RD[3] RD[2] RD[1] RD[0] 8 bits Table 238. Register write command: response format Bit field Definition PA[3:0] DSI physical address. This field contains the PADDR[3:0] bits in the PHYSADDR register. C[3:0] Register Write Command = '1000' RD[15:8] The data contained in the register addressed by RA[7:1] + 1 (High Byte) (after the register write is executed) RD[7:0] The data contained in the register addressed by RA[7:1] + 0 (Low Byte) (after the register write is executed) Table 239. Register write command: response format description A register write command to a register address outside the addresses listed in Section 11.1 will not execute, but will result in a valid response. The data for the registers will be '0x0000'. A register write command to a read-only register will not execute, but will result in a valid response. The data for the registers will be the current contents of the register. 12.3.4.3 Global register write command to the PHYSADDR register The device supports the Register Write command as a global address under the following conditions: 1. The Register Write command is written to the PHYSADDR register. 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 159 / 254 |
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