em91450 ELAN Microelectronics Corp, em91450 Datasheet - Page 17
em91450
Manufacturer Part Number
em91450
Description
Tone/pulse Dialer With Lcd Interface And I.p.p. Detect Function
Manufacturer
ELAN Microelectronics Corp
Datasheet
1.EM91450.pdf
(24 pages)
EM91450 SERIES
TONE/PULSE DIALER WITH LCD INTERFACE
AND I.P.P. DETECT FUNCTION
Toff
RING
Ton
DRING
HKS
RMUTE
Figure 11. Timing of receiving an incoming call
* The external ring detection circuit must send a low signal at the total ring cycle (Ton and Toff)
RING
DRING
HKS
RMUTE
Figure 12. Timing of making an outgoing call
* This specification are subject to be changed without notice.
2.10.1999
17
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