NXP Semiconductors
FXPS7115D4
Digital absolute pressure sensor, 40 kPa to 115 kPa
Table 10.ꢀSPI command bit allocation
C[3:0]
Command type
Data source SOURCEID[2:0] = C[3:1]
Reference
0
0
0
0
Unused Command
Not applicable
Not applicable
(reserved for error response)
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Sensor Data Request
reserved Command
Sensor Data Request
reserved Command
Sensor Data Request
reserved Command
Sensor Data Request
Register Write Request
Sensor Data Request
reserved Command
Sensor Data Request
Register Read Request
Sensor Data Request
Reserved Command
Sensor Data Request
SOURCEID = 0h
Not applicable
Not applicable
Not applicable
Not applicable
SOURCEID = 1h
Not applicable
SOURCEID = 2h
Not applicable
SOURCEID = 3h
Not applicable
SOURCEID = 4h
Not applicable
Not applicable
Not applicable
SOURCEID = 5h
Not applicable
SOURCEID = 6h
Not applicable
SOURCEID = 7h
7.5.2 SPI response format
Table 11.ꢀSPI response 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
Response to Register Request
9
8
7
6
5
4
3
2
1
0
Command
Basic Unused
Register data: contents
of RA[7:1] high byte
Register data: contents
of RA[7:1] low byte
8-bit CRC
Status
Data
0h
C[0], [3:1]
ST[1:0]
0
0
0
0
RD[15:8]
RD[7:0]
CRC[7:0]
Response to Sensor Data Request
Sensor Data
Command
Basic
Status
Detail
Status
8-bit CRC
C[0], [3:1]
ST[1:0]
SD[11:0]
0
0
0
0
0
0
SF[1:0]
CRC[7:0]
Error Response to Register Request
Unused Data = 0000h
Command
Basic
Status
Detail
Status
8-bit CRC
C[0], [3:1]
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
SF[1:0]
CRC[7:0]
Error Response to Sensor Data Request With Sensor Data
Sensor Data
Command
Basic
Status
Detail
Status
8-bit CRC
C[0] C[3] C[2] C[1]
1
1
SD[11:0]
0
0
0
0
SF[1:0]
CRC[7:0]
Error Response to Sensor Data Request Without Sensor Data
Unused Data = 0000h
Command
Basic
Status
x
Detail
Status
8-bit CRC
0
0
0
0
1
1
x
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SF[1:0]
CRC[7:0]
FXPS7115D4
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© NXP B.V. 2019. All rights reserved.
Product data sheet
Rev. 3 — 5 December 2019
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