22
KX-TS2388RUB/KX-TS2388RUW/KX-TS2388CAB/KX-TS2388CAW/KX-TS2388UAB/KX-TS2388UAW
10.1.2. RINGER IC (IC1)
Vcc 1
R
S
L 2
LFI
3
LFO 4
OUT
8
HFI
7
HFO
6
GND
5
LOW FREQ
O
S
C
HIGH FREQ
O
S
C
POWER
S
UPPLY
WITH
HY
S
TERI
S
I
S
AMP
Pin de
s
cription
s
1
2
3
4
5
6
7
8
Vcc
R
S
L
LFI
LFO
GND
HFO
HFI
OUT
Pin No. Pin name
Power
su
pply pin
R
S
L pin
Low-fre
qu
ency time
con
s
t
a
nt connector pin
GND pin
High-fre
qu
ency time
con
s
t
a
nt connector pin
O
u
tp
u
t pin
Thi
s
i
s
the power
su
pply pin for the lC. It i
s
connected to the ( ) pin of
the diode
b
ridge.
Thi
s
i
s
us
ed to ch
a
nge the oper
a
tion initi
a
tion c
u
rrent when connected
to the GND pin.
Thi
s
i
s
connected to the time con
s
t
a
nt th
a
t determine
s
the o
s
cill
a
tion
fre
qu
ency on the w
a
r
b
le.
Thi
s
pin h
as
the lowe
s
t potenti
a
l on the lC. It i
s
connected to the ( )
pin of the diode
b
ridge.
Thi
s
i
s
connected to the time con
s
t
a
nt th
a
t determine
s
the o
s
cill
a
tion
fre
qu
ency on the tone
s
ide (the
au
di
b
le fre
qu
ency
s
ide).
Thi
s
i
s
us
ed to connect
a
piezoelectric
bu
zzer, or to connect
a
dyn
a
mic
s
pe
a
ker thro
u
gh
a
tr
a
n
s
former.
Name
Function
