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ZGP323H Datasheet(PDF) 52 Page - Zilog, Inc.

Part No. ZGP323H
Description  Programmable input glitch filter for pulse reception
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Maker  ZILOG [Zilog, Inc.]
Homepage  http://www.zilog.com
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ZGP323H Datasheet(HTML) 52 Page - Zilog, Inc.

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ZGP323H
Product Specification
PS023803-0305
Functional Description
44
into LO8; if it is a negative edge, data is put into HI8. From that point, one of the
edge detect status bits (CTR1, D1; D0) is set, and an interrupt can be generated if
enabled (CTR0, D2). Meanwhile, T8 is loaded with FFh and starts counting again.
If T8 reaches 0, the timeout status bit (CTR0, D5) is set, and an interrupt can be
generated if enabled (CTR0, D1). T8 then continues counting from FFH (see
Figure 23 and Figure 24).
Figure 23. Demodulation Mode Count Capture Flowchart
T8 (8-Bit)
Count Capture
T8 Enable
(Set by User)
No
Yes
Edge Present
What Kind
of Edge
T8 HI8
No
Yes
Negative
FFh
T8
Positive
T8 LO8


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