W91320N SERIES
Timing Waveforms, continued
HKS
HFI
H KEY
HFO
T/P MUTE
H/P MUTE
CHIP ENBLE
OFF HOOK
ON HOOK
High
Low
Figure 3a. Handfree and Hold Timing Diagram
Note: The H KEY cannot be enabled when chip is disabled.
HKS
HFI
H KEY
HFO
T/P MUTE
H/P MUTE
CHIP ENBLE
OFF HOOK
High
Figure 3b. Handfree and Hold Timing Diagram
Note: The HFI and H KEY inputs will toggle the HFO signal; as soon as either HFI or H KEY is activated, the HFO signal will go
high and previous activate inputs will be ignored.
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Publication Release Date: May 1997
Revision A2