
Si1141/42/43
PS1_TH0: PS1_TH Data Word Low Byte @ 0x11
Bit
7
6
5
4
3
2
1
0
Name
Type
Reset value=0000 0000
PS1_TH[7:0]
RW
Bit
Name
Function
7:0
PS1_TH[7:0] PS1_TH is a 16-bit threshold value. It is compared to PS1 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 PS1_TH should be preceded by a PS_PAUSE or
PSALS_PAUSE command. For Si114x revision A10 and below, PS1_TH uses an 8-
bit compressed format at address 0x11. Refer to AN498 "Si114x Designer's Guide"
Section 5.4 "Compression Concept."
PS1_TH1: PS1_TH Data Word High Byte @ 0x12
Bit
7
6
5
4
3
2
1
0
Name
Type
Reset value=0000 0000
PS1_TH[15:8]
RW
Bit
Name
Function
7:0
PS1_TH[15:8] PS1_TH is a 16-bit threshold value. It is compared to PS1 measurements during autono-
mous operation for interrupting the host. If the threshold register is updated while a mea-
surement 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 measurements results immedi-
ately after threshold updates. Once autonomous measurements have started, modifica-
tion to PS1_TH should be preceded by a PS_PAUSE or PSALS_PAUSE command. For
Si114x revision A10 and below, PS1_TH uses an 8-bit compressed format at address
0x11. Refer to AN498 "Si114x Designer's Guide" Section 5.4 "Compression Concept."
Rev. 1.3
41