Z8FS021 Datasheet, PDF (32/68 Pages) Zilog, Inc. – Select from an assortment of lenses and pyroelectric sensors to best fit your application

ZMOTION^® Intrusion Detection
Product Specification
24
Bit
Field
Control
Address
Tables 5 through 15 describe each of the standard API registers listed in Table 4.
Table 5. PIR Engine Enable Register
(ePIR_Enable)
7
6
5
4
3
2
1
0
PIR Enable/Disable Pattern
Read/Write
100H
PIR Enable/Disable Pattern (Bits 7–0)
PIR Enable/Disable Register; controlled by the application.
• The PIR Enable Register controls the overall operation of the PIR Engine. As an added level of
protection, there are specific 8-bit enable and disable values; all other values are reserved. Reading this
register returns the last value written. Once enabled, the PIR Engine reads the application-controlled
Status/Control Register values and sets the Engine-controlled values to their default states.
• To enable the PIR Engine, first write the ePIR_ENABLE_PATTERN to the PIR Enable Register, then
execute the EPIR_INIT macro. See Table 6.
Table 6. PIR Software Enable Patterns
Pattern Name
00h
ePIR_DISABLE_PATTERN
11h
ePIR_ENABLE_PATTERN
Description
Disables all PIR Engine functions, including motion detection.
Used to temporarily or permanently shut down the Engine.
Enables the PIR Engine. All primary Engine functions, as
configured in Engine Status/Control Registers, are enabled.
Confirmation of enabled status is provided through the Engine
Disabled bit in Status/Control Register 0.
PS028806-0315
Standard API Register Set