Z8FS040 datasheet(33/56 Pages) ZILOG

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ZMOTION

TM Detection and Control Family

Product Specification

PS028506-1110

PRELIMINARY

Advanced API Register Set

The following registers are for advanced configuration of the PIR engine. They include customization

for lens and pyroelectric sensor configurations. These registers are not initialized by the PIR engine.

API Advanced Register Name

Address

Mnemonic

Description

PIR Advanced Status/Control

F0h

ePIR_ASC0

EM noise and MD origin status

PIR Advanced Status/Control

F2h

ePIR_ASC2

Window Size, Lock Level, and

Window Update Rate

PIR Process Rate

F3h/F4h

ePIR_Process_Rate

Relative Processing available to PIR

engine

PIR Sample Size Register

F5h

ePIR_Sample_Size

Controls amount of sensor signal

averaging

PIR Debounce Time Register

F6h

ePIR_Debounce_Time

Controls time to Debounce motion

signal

PIR Debounce Batch Size

F7h

ePIR_Debounce_Batch

Controls out of window samples

needed for Debounce

PIR Transient Sensitivity Level

F8h

ePIR_Transient_Sense

Sets PIR engine sensitivity to

transient detection

PIR Noise Sensitivity Level

F9h

ePIR_Noise_Sense

Sets PIR engine sensitivity to noise

detection

PIR Signal

FAh/FBh

ePIR_Signal

Current Pyro Sensor signal sample

PIR Pyro DC Signal Level

FCh/FDh

ePIR_Signal_DC

Current calculated Pyro Sensor DC

offset

Table 7 - PIR Engine Advanced Registers

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