EM78815
8-Bit Microcontroller
SECOND RING
2SECONDS
FIRST RING
2 SECONDS
0.5 SEC
0.5 SEC
TIP/RING
/ TRIG
/CD
Tcdh
Tcdl
Tdoc
DATA
DATA
(internal
clock)
3.579 MHz
Tsup
/358E
Fig. 31 FSK Timing Diagram
CAS
Tcasi
plug in
on hook
In use
Events
Normal
Tcwd
Tcwr
CAS
CWPWR
Power-off
Power-on
Fig. 32 Call Waiting Timing Diagram
72 •
Product Specification (V2.4) 02.17.2006
(This specification is subject to change without further notice)