W91520N Datasheet, PDF (12/16 Pages) Winbond – TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION

Timing Waveforms, continued
W91520N SERIES
HKS
KEY IN
DTMF
T/P MUTE
H/P MUTE
DP
OSC.
R/P
T_KID
T_KRD
T_TD
T_ITP
T < T OHD
T_ITP
High
OSCILLATION
Figure 2(b) Tone Mode Auto Dialing Timing Diagram
HKS
KEY IN
DTMF
T/P MUTE
H/P MUTE
DP
OSC.
R/P
T_KID
T_KRD
T_TD
T_ITP
T = T_OHD
High
OSCILLATION
Figure 2(c) Tone Mode Auto Dialing Timing Diagram
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