SI1143-A10-GMR【PDF 42/78 页】SENS IR PROXIMITY AMB LT 10QFN

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Sheet目录507

38页 39页 40页 41页 [42页]43页 44页 45页 46页

Si1141/42/43

PS2_TH0: PS2_TH Data Word Low Byte @ 0x13

Bit

Name

Type

Reset value=0000 0000

PS2_TH[7:0]

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

Name

Type

Reset value=0000 0000

PS2_TH[15:8]

Bit

Name

Function

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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