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FXPS7115D4 数据表(PDF) 24 Page - NXP Semiconductors |
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FXPS7115D4 数据表(HTML) 24 Page - NXP Semiconductors |
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24 / 72 page ![]() NXP Semiconductors FXPS7115D4 Digital absolute pressure sensor, 40 kPa to 115 kPa FXPS7115D4 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2019. All rights reserved. Product data sheet Rev. 3 — 5 December 2019 24 / 72 7.5.3.3.2 Sensor data request response message format Table 22. Sensor data request response message format MSB: bit 31; LSB: bit 0 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Command Basic Status Sensor Data Detail Status 8-bit CRC C[0], [3:1] ST[1:0] SD[11:0] 0 0 0 0 SF[1:0] CRC[7:0] Table 23. Sensor data request response message bit field descriptions Bit field Definition C[0] Sensor data request command = '1' C[3:1] = SOURCEID[2:0] Source identification code for the requested sensor data ST[1:0] Basic Status SD[11:0] Sensor data SF[1:0] Detailed status CRC[7:0] 8-bit CRC 7.5.3.4 Reserved commands The device responds to reserved commands on the next SPI message subject to the error handling conditions specified in Section 7.5.5 "Exception handling". 7.5.3.4.1 Reserved command message format Table 24. Reserved command message format MSB: bit 31; LSB: bit 0 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Command x x x x x x x x x x x x x x x x x x x x 8-bit CRC 0 0 0 0 x x x x x x x x x x x x x x x x x x x x CRC[7:0] 0 0 1 0 x x x x x x x x x x x x x x x x x x x x CRC[7:0] 0 1 0 0 x x x x x x x x x x x x x x x x x x x x CRC[7:0] 0 1 1 0 x x x x x x x x x x x x x x x x x x x x CRC[7:0] 1 0 1 0 x x x x x x x x x x x x x x x x x x x x CRC[7:0] 1 1 1 0 x x x x x x x x x x x x x x x x x x x x CRC[7:0] Table 25. Reserved command message bit field descriptions Bit field Definition C[3:0] Reserved command CRC[7:0] 8-bit CRC 7.5.3.4.2 Reserved command response message format Table 26. Reserved command response message format MSB: bit 15; LSB: bit 0 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Command Echo Data 8-bit CRC x x x x x x x x x x x x x x x x x x x x x x x x CRC[7:0] |
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