W91473 Datasheet, PDF (15/20 Pages) Winbond – 14-MEMORY TONE/PULSE SWITCHABLE DIALER WITH HANDFREE AND LOCK FUNCTION

W91473 SERIES
HKS
KEY IN
4
2
TKID
B
M
DP
TIDP
TIDP
TPDP
T/P MUTE
2
TKID
TIDP
TPDP
HPM MUTE
KT
DTMF
TFKP
OSC.
LOW
OSCILLATION
Figure 1. Pulse Mode Diagram (Normal Dialing)
OSCILLATION
HKS
KEY IN
DTMF
T/P MUTE
TKID
TITP
TTD
TKRD
TITP
TKID
TKRD
TITP
HPM MUTE
LOW
KT
DP T_FKP
OSC.
Timing waveforms, continued
LOW
HIGH
OSCILLATION
Figure 2. Tone Mode Diagram (Normal Dialing)
OSCILLATION
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Publication Release Date: February 1995
Revision A3