EM91455 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE
AND I.P.P. DETECT FUNCTION
HKS
KEY IN
KT
XMUTE
2
RD/P
3
Tp
SDO
PO
DTMF
OSC.
HKS
KEY IN
KT
XMUTE
Tidp
Tidp
Figure 5. Pause key operating timing
2
*/T
3
Tpt
SDO
PO
DTMF
OSC.
Figure 6. Pulse to Tone (P→T) operating timing
HKS
F
KEY IN
Tdb
KT
XMUTE
SDO
PO
DTMF
Tf
Tfp=300ms
OSC.
Figure 7. Flash key operating timing
* This specification are subject to be changed without notice.
Hi-impedance
4
Hi-impedance
Hi-impedance
9.24.1998 15