W91590 Datasheet, PDF (15/20 Pages) Winbond – 24-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE, HOLD AND LOCK FUNCTIONS

W91590 SERIES
TIMING WAVEFORMS
HKS
KEY IN
DP
4
2
TKID
BM
TPDP TIDP
TIDP
T/P MUTE
HPM MUTE
2
TKID
TIDP
TPDP
KT
DTMF
OSC.
TFKP
LOW
OSCILLATION
OSCILLATION
Figure 1. Pulse Mode Diagram (Normal Dialing)
HKS
KEY IN
DTMF
T/P MUTE
TKID
TITP
TTD
TKRD
TITP
HPM MUTE
KT
DP
OSC.
TFKP
LOW
LOW
HIGH
OSCILLATION
TKID
TKRD
TITP
OSCILLATION
Figure 2. Tone Mode Diagram (Normal Dialing)
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Publication Release Date: July 1995
Revision A3