W91520N Datasheet, PDF (11/16 Pages) Winbond – TONE/PULSE DIALER WITH HANDFREE AND HOLD FUNCTION

Timing Waveforms, continued
W91520N SERIES
HKS
KEY IN
DP
T/P MUTE
H/P MUTE
DTMF
OSC.
R/P
T_KID
T_KRD
MB
T_PDP
T_IDP ^{M B}
Low
OSCILLATION
T = TOHD
Figure 1(c) Pulse Mode Auto Dialing Timing Diagram
HKS
KEY IN
DTMF
T/P MUTE
H/P MUTE
DP
OSC.
3
TKID
T_TD
4
2
T_ITP
T_ITP
OSCILLATION
High
T_KRD
5
T_ITP
OSCILLATION
Figure 2(a) Tone Mode Normal Dialing Timing Diagram
- 11 -
Publication Release Date: May 1997
Revision A3