Si1141/42/43
PS3_TH0: PS3_TH Data Word Low Byte @ 0x15
Bit
7
6
5
4
3
2
1
0
Name
Type
Reset value=0000 0000
PS3_TH[7:0]
RW
Bit
7:0
Name
PS3_TH[7:0]
Function
PS3_TH is a 16-bit threshold value. It is compared to PS3 measurements during auton-
omous operation for interrupting the host. If the threshold register is updated while a
measurement is in progress, it is possible that an invalid threshold will be applied if the
first new threshold byte has been written and not the second. Remedies include ensur-
ing no measurement during threshold updates and discarding measurements results
immediately after threshold updates.Once autonomous measurements have started,
modification to PS3_TH should be preceded by a PS_PAUSE or PSALS_PAUSE com-
mand. For Si114x revision A10 and below, PS3_TH uses an 8-bit compressed format at
address 0x15. Refer to AN498 "Si114x Designer's Guide" Section 5.4 "Compression
Concept."
PS3_TH1: PS3_TH Data Word High Byte @ 0x16
Bit
7
6
5
4
3
2
1
0
Name
Type
Reset value=0000 0000
PS3_TH[15:8]
RW
Bit
7:0
Name
PS3_TH[15:8]
Function
PS3_TH is a 16-bit threshold value. It is compared to PS3 measurements during
autonomous operation for interrupting the host. If the threshold register is updated
while a measurement is in progress, it is possible that an invalid threshold will be
applied if the first new threshold byte has been written and not the second. Reme-
dies include ensuring no measurement during threshold updates and discarding
measurements results immediately after threshold updates.Once autonomous mea-
surements have started, modification to PS3_TH should be preceded by a
PS_PAUSE or PSALS_PAUSE command. For Si114x revision A10 and below,
PS3_TH uses an 8-bit compressed format at address 0x15. Refer to AN498 "Si114x
Designer's Guide" Section 5.4 "Compression Concept."
Rev. 1.3
43
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