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Si1141/42/43
PS2_TH0: PS2_TH Data Word Low Byte @ 0x13
Bit
7
6
5
4
3
2
1
0
Name
Type
Reset value=0000 0000
PS2_TH[7:0]
RW
Bit
Name
Function
7:0
PS2_TH[7:0] PS2_TH is a 16-bit threshold value. It is compared to PS2 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. Remedies
include ensuring no measurement during threshold updates and discarding measure-
ments results immediately after threshold updates. Once autonomous measurements
have started, modification to PS2_TH should be preceded by a PS_PAUSE or
PSALS_PAUSE command. For Si114x revision A10 and below, PS2_TH uses an 8-
bit compressed format at address 0x13. Refer to AN498 "Si114x Designer's Guide"
Section 5.4 "Compression Concept."
PS2_TH1: PS2_TH Data Word High Byte @ 0x14
Bit
7
6
5
4
3
2
1
0
Name
Type
Reset value=0000 0000
PS2_TH[15:8]
RW
Bit
Name
Function
42
7:0
PS2_TH[15:8] PS2_TH is a 16-bit threshold value. It is compared to PS2 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 PS2_TH should be preceded by a PS_PAUSE or PSALS_PAUSE com-
mand. For Si114x revision A10 and below, PS2_TH uses an 8-bit compressed format at
address 0x13. Refer to AN498 "Si114x Designer's Guide" Section 5.4 "Compression
Concept."
Rev. 1.3
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