W91473A Просмотр технического описания (PDF) - Winbond

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W91473A

14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTIONS

Winbond 

W91473 SERIES

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

OFF HOOK

HFI

H KEY

HFO

T/P MUTE

HIGH

HPM MUTE

CHIP ENBLE

Figure 3(b).

___ _____

___ _____

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 inputs will be ignored.

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