W91620 Datasheet, PDF (15/16 Pages) Winbond – 10-MEMORY TONE/PULSE DIALER WITH TWO-STAGE REDIAL FUNCTION

W91620 SERIES
Timing Waveforms, continued
HKS
KEY IN
DP/C5
4
2
T_KID
BM
TPDP
PT
8
MB
TIDP
TIDP
T/P MUTE
TITP
DTMF
P MUTE
OSC.
OSCILLATION
Figure 4. P→T Operation Timing Diagram in Normal Dialing
HKS
LOW
KEY IN
F
F
3
TKID
DP/C5
TFB
TFP
TFP
TIDP
T/P MUTE
P MUTE
DTMF
OSC.
LOW
OSCILLATION
Figure 5. Flash Operation Timing Diagram