W91590 Просмотр технического описания (PDF) - Winbond

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W91590

24-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE, HOLD AND LOCK FUNCTIONS

Winbond 

W91590 SERIES

Timing Waveforms, continued

HKS

HFI

H KEY

HFO

OFF HOOK

ON HOOK

T/P MUTE

HPM MUTE

HIGH

LOW

CHIP ENBLE

Figure 3(a).

Note: The H KEY cannot be enabled when chip is disabled.

HKS

HFI

H KEY

HFO

OFF HOOK

T/P MUTE

HPM MUTE

HIGH

CHIP ENBLE

Figure 3(b).

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

high and previous inputs will be ignored.

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