FXPS7115D4S datasheet(19/72 Pages) NXP

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NXP Semiconductors

FXPS7115D4S

Digital absolute pressure sensor, 40 kPa to 115 kPa

7.5.2 SPI response format

MSB: bit 31; LSB: bit 0

28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9

Response to Register Request

Command

Basic

Status

Unused

Data

of RA[7:1] high byte

of RA[7:1] low byte

8-bit CRC

C[0], [3:1]

ST[1:0] 0

RD[15:8]

RD[7:0]

CRC[7:0]

Response to Sensor Data Request

Command

Basic

Status

Sensor Data

Detail

Status

8-bit CRC

C[0], [3:1]

ST[1:0]

SD[11:0]

Optional SD

resolution

SF[1:0]

CRC[7:0]

Error Response to Register Request

Command

Basic

Status

Unused Data = 0000h

Detail

Status

8-bit CRC

C[0], [3:1]

0 SF[1:0]

CRC[7:0]

Error Response to Sensor Data Request With Sensor Data

Command

Basic

Status

Sensor Data

Detail

Status

8-bit CRC

C[0], [3:1]

SD[11:0]

Optional SD

resolution

SF[1:0]

CRC[7:0]

Error Response to Sensor Data Request Without Sensor Data

Command

Basic

Status

Unused Data = 0000h

Detail

Status

8-bit CRC

0 SF[1:0]

CRC[7:0]

Table 12. SPI response format

7.5.3 Command summary

7.5.3.1 Register read command

The device supports a register read command. The register read command uses the upper 7 bits of the

addresses defined in Section 7.6 "User-accessible data array" to address 8-bit registers in the register map.

The response to a register read command is shown in Section 7.5.3.1.2 "Register read response message

format". The response is transmitted on the next SPI message if and only if all of the following conditions are

met:

• No SPI error is detected (see Section 7.5.5.3 "SPI error" )

• No MISO error is detected (see Section 7.5.5.4 "SPI data output verification error")

If these conditions are met, the device responds to the register read request as shown in Section 7.5.3.1.2

"Register read response message format". Otherwise, the device responds with the error response as defined

in Section 7.5.5.2 "Detailed status field". The register read response includes the register contents at the rising

edge of SS_B for the register read command.

FXPS7115D4S

All information provided in this document is subject to legal disclaimers.

Objective data sheet

Rev. 1.2 — 28 June 2023

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