NXP Semiconductors
FXPS7115D4
Digital absolute pressure sensor, 40 kPa to 115 kPa
Table 29.ꢀSPI Response Message CRC
SPICRCSEED[3:0]
Default Polynomial
x8+ x5+ x3+ x2+ x + 1
x8+ x5+ x3+ x2+ x + 1
Default non-direct Seed
1111 1111
0000
nonzero
1111 SPICRCSEED[3:0]
7.5.5 Exception handling
7.5.5.1 Basic status field
All responses include a status field (ST[1:0]) that includes the general status of the
device and transmitted data as described below. The contents of the status field is
a representation of the device status at the rising edge of SS_B for the previous SPI
command.
Table 30.ꢀBasic status field for responses to register commands
ST[1:0]
Status
Description
SF[1:0]
Priority
0
0
Device in Initialization
Device in initialization (ENDINIT not
set)
0
0
3
0
1
1
0
Normal Mode
Self-test
Normal mode(ENDINIT set)
0
0
0
0
4
2
Self-test(ST_CTRL[3:0] not equal to
'0000')
1
1
Internal Error Present
Detailed Status Field
Detailed
1
Status Field
7.5.5.2 Error responses
Table 31.ꢀError responses bit field descriptions
SF[1:0]
Status Sources
DEVSTAT State
Bit set in DEVSTAT3
0
0
Oscillator training error (OSCTRAIN_ERR)
Offset error (PABS_HIGH or PABS_LOW or CM_ Bit set in DSP_STAT
ERROR)
Bit set in DEVSTAT2
Temperature error
0
1
1
1
0
1
User OTP memory error (UF2 or UF1)
User R/W memory error (UF2)
NXP OTP Memory error
U_OTP_ERR set in DEVSTAT2
U_RW_ERR set in DEVSTAT2
F_OTP_ERR set in DEVSTAT2
Test Mode active
Supply error
TESTMODE bit set in DEVSTAT
bit set in DEVSTAT1
DEVRES set
Reset error
MISO error
SPI error
Bit set in DEVSTAT3
N/A
7.5.5.3 SPI error
The following external SPI conditions result in a SPI error:
• SCLK is high when SS_B is asserted
• The number of SCLK rising edges detected while SS_B is asserted is not equal to 16
• SCLK is high when SS_B is deasserted
• CRC error is detected (MOSI)
• A register write command to any register other than the DEVLOCK_WR register is
received while ENDINIT is set
If a SPI error is detected, the device responds with the error response as described
in Section 7.5.5.2 "Error responses" with the detailed status field set to “SPI Error” as
defined in Section 7.5.5.1 "Basic status field".
FXPS7115D4
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© NXP B.V. 2019. All rights reserved.
Product data sheet
Rev. 3 — 5 December 2019
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