IL9151-3
Operation Procedures
Symbol Definitions:
D
P
: pulse digit (0 through 9)
ZiZiZi: conversation
0-0↑: off-hook.
0-0↓: on-hook.
* or # : Redial
Recommended Operations:
Normal Dialing:
0-0↑; D
P
... D
P
; ZiZiZi; 0-0↓
Dial pulse begins as soon as first key is entered.
Debounced and detected on chip.
Redialing:
0-0↑; * or # key
(* or # key can be accepted as first key entry after Off-
Hook.)
Functional Description
1) N-channel open drain output - DP (Figure 1).
2) Clock oscillator
The clock oscillator consists of two inverters, with the
frequency of oscillation controlled by external
components connected to pins 6,7, and 8. The circuit is
sufficiently versatile to allow the use of a variety of
external component configurations. The oscillator
circuit is shown in figure 2.
Figure 1
Figure 2
INTEGRAL [ INTEGRAL CORP. ]
