NXP Semiconductors
FXPS7115D4
Digital absolute pressure sensor, 40 kPa to 115 kPa
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 Sensor Data
Detail
8-bit CRC
Status
Status
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]
ST[1:0]
Source identification code for the requested sensor data
Basic Status
Sensor data
Detailed status
8-bit CRC
SD[11:0]
SF[1:0]
CRC[7:0]
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
x
x
x
x
x
x
x
8
x
x
x
x
x
x
x
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
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
8-bit CRC
CRC[7:0]
CRC[7:0]
CRC[7:0]
CRC[7:0]
CRC[7:0]
CRC[7:0]
0
0
0
0
1
1
0
0
1
1
0
1
0
1
0
1
1
1
0
0
0
0
0
0
Table 25.ꢀReserved command message bit field descriptions
Bit field
Definition
C[3:0]
Reserved command
8-bit CRC
CRC[7:0]
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]
FXPS7115D4
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© NXP B.V. 2019. All rights reserved.
Product data sheet
Rev. 3 — 5 December 2019
24 / 72
NXP [ NXP ]
