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ZGP323H Datasheet(PDF) 57 Page - Zilog, Inc.

Part No. ZGP323H
Description  Programmable input glitch filter for pulse reception
Download  107 Pages
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Maker  ZILOG [Zilog, Inc.]
Homepage  http://www.zilog.com
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ZGP323H Datasheet(HTML) 57 Page - Zilog, Inc.

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ZGP323H
Product Specification
PS023803-0305
Functional Description
49
Figure 28. Ping-Pong Mode Diagram
Initiating PING-PONG Mode
First, make sure both counter/timers are not running. Set T8 into Single-Pass
mode (CTR0, D6), set T16 into SINGLE-PASS mode (CTR2, D6), and set the
Ping-Pong mode (CTR1, D2; D3). These instructions can be in random order.
Finally, start PING-PONG mode by enabling either T8 (CTR0, D7) or T16 (CTR2,
D7). See Figure 29.
Figure 29. Output Circuit
The initial value of T8 or T16 must not be 1. Stopping the timer and restarting the
timer reloads the initial value to avoid an unknown previous value.
Enable
TC8
Enable
Timeout
TC16
Ping-Pong
CTR1 D3,D2
Timeout
T16_OUT
MUX
CTR1 D3
T8_OUT
P34
AND/OR/NOR/NAND
Logic
MUX
MUX
MUX
P35
P36
P34_Internal
CTR1 D5, D4
P36_Internal
P35_Internal
CTR1, D2
CTR0 D0
CTR1 D6
CTR2 D0


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