Z8FS040 Datasheet, PDF (33/56 Pages) Zilog, Inc. – ZMOTION Detection and Control Family Featuring Zilog’s PIR Technology

ZMOTION^TM Detection and Control Family
Product Specification
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
Register 0
F0h ePIR_ASC0
EM noise and MD origin status
PIR Advanced Status/Control
Register 2
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
Register
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
PS028506-1110
PRELIMINARY
28