W91520N Datasheet, PDF (14/16 Pages) Winbond – TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION

Timing Waveforms, continued
W91520N SERIES
HKS
KEY IN
DP
HFI
HFO
T/P MUTE
H/P MUTE
DTMF
OSC.
R
TKID
MB
R
TKID
TRB
TPDP ^TIDP
TIDP
MB
TRP
TPDP
Low
OSCILLATION
Figure 4. One-key Redial Timing Diagram
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
DTMF
OSC.
2
R/P
TKID
MB
TPDP
3
TP
Low
OSC
T_IDP
MB
T_PDP
Figure 5. Pause Function Timing Diagram
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