W91550DN 데이터 시트보기 (PDF) - Winbond

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W91550DN

13-MEMORY TONE/PULSE DIALER WITH LCD AND LOCK FUNCTIONS

Winbond 

W91550DN SERIES

Timing Waveforms, continued

HKS

HFI

HOLD KEY

HFO

T/P MUTE

HPM MUTE

CHIP ENBLE

OFF HOOK

High

Figure 10(b). Hold Timing Diagram

Note: The HFI and HOLD KEY inputs will toggle the HFO signal; as soon as either HFI or HOLD KEY is activated, the HFO

signal will go high and previous activated inputs will be ignored.

HKS

HFI

HOLD KEY

HFO

T/P MUTE

HPM MUTE

CHIP ENBLE

ON HOOK

High

Figure 10(c). Hold Timing Diagram

Note: Changing the state of the HKS signal from high to low will initialize the HFO and HPM MUTE signals.

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Publication Release Date: November 1997

Revision A3

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