Z8FS021 Datasheet, PDF (31/68 Pages) Zilog, Inc. – Select from an assortment of lenses and pyroelectric sensors to best fit your application

ZMOTION^® Intrusion Detection
Product Specification
23
Standard API Register Set
The Standard API Register set, shown in Table 4, is a series of registers implemented in
the Z8FS040 MCU RAM that allows the user code to configure and communicate with the
PIR Engine. The default values are loaded only when the PIR Engine is enabled via the
PIR Enable Register.
Table 4. PIR Engine Standard API Registers
API Register Name
PIR Engine Enable Register
(ePIR_Enable)
PIR Sensitivity Register
(ePIR_Sensitivity)
PIR Status/Control Register 0
(ePIR_SC0)
PIR Status/Control Register 1
(ePIR_SC1)
PIR Status/Control Register 2
(ePIR_SC2)
PIR Status/Control Register 3
(ePIR_SC3), 28-pin SSOP
PIR ADC Result Value
(ePIR_ADC_Result)
PIR Version (ePIR_Version)
Address
100h
101h
102h
103h
104h
105h
10Ah/10Bh
10Ch
Mnemonic
ePIR_Enable
Description
Enable PIR Engine.
ePIR_Sensitivity Motion Sensitivity.
ePIR_SC0
ePIR_SC1
Motion Status and Engine
Mode Control.
Engine Status and Control.
ePIR_SC2
Range Control.
ePIR_SC3
ADC Scan Request.
ePIR_ADC_Result ADC Scan Result.
ePIR_Version
PIR Engine Software Version.
PS028806-0315
Standard API Register Set