W91550 WINBOND [Winbond], W91550 Datasheet - Page 29

• Manufacturer Part Number: W91550
• Description: 13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTION
• Manufacturer: WINBOND [Winbond]

Timing Waveforms, continued
Note: The HFI and HOLD KEY inputs will toggle the HFO signal; as soon as either HFI or HOLD KEY is activated, the HFO
Note: Changing the state of the HKS signal from high to low will initialize the HFO and HPM MUTE signals.
signal will go high and previous activated inputs will be ignored.
CHIP ENBLE
HPM MUTE
HOLD KEY
T/P MUTE
CHIP ENBLE
HPM MUTE
HOLD KEY
HKS
HFO
T/P MUTE
HFI
HKS
HFO
HFI
Figure 10(b). Hold Timing Diagram
Figure 10(c). Hold Timing Diagram
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ON HOOK
High
OFF HOOK
High
Publication Release Date: November 1997
W91550DN SERIES
Revision A3