CYG20XX
Package Pinouts
CYG2000/CYG2001
CYG2010/CYG2011
VCC
VCC
LINE 1
LINE 2
LINE 1
LINE 2
1
2
18
17
1
2
18
17
GND
GND
DO NOT USE
LOOPI
7
8
9
7
8
9
TIP
RING
TIP
RING
OH
RING
OH
RING
11
10
11
10
Top View
Top View
CYG2020/CYG2021
CYG2030/CYG2031
VCC
VCC
LINE 1
LINE 2
LINE 1
LINE 2
1
2
18
17
1
2
18
17
GND
GND
CID1
CID2
CID1
CID2
14
13
14
13
LOOPI
7
8
9
TIP
RING
TIP
RING
OH
RING
OH
RING
8
9
11
10
11
10
Top View
Top View
CYG20XX Pinouts & Definitions
Function
PIN#
I/O
I/O
I/O
I
Name
1
2
7
LINE1
LINE2
LOOPI
Transformer isolated audio signal coupling path for the telephone line.
Transformer isolated audio signal coupling path for the telephone line.
When system is off-hook (OH driven LOW) LOOPI is driven LOW continuously
on CYG2010/2011/2030/2031 devices.
N/C
OH
Keying pin for CYG2000/CYG2001, do not use.
8
9
I
Driving this pin LOW asserts the off-hook condition. The hookswitch LED is cur-
rent limited by an internal 470Ω resistor.
O
RING
Active LOW indicates an incoming ring signal. This is pulsed LOW by the AC
ring signal at the ring frequency from 15-40Hz.
10
11
13
I/O
I/O
O
RING
TIP
Connection to telephone line Ring conductor.
Connection to telephone line Tip conductor.
CID2
Caller ID connection on CYG2020/2021/2030/2031. CID1/CID2 connect to an
external 1-Form-A solid state relay (CP Clare LCA110). When the SSR is closed
(connecting CID1 to CID2) Caller ID information is presented to LINE1/LINE2
after the first telephone ring burst.
14
17
18
O
I
CID1
GND
VCC
Caller ID connection. See CID2 above.
Connected to host system ground.
I
Provides power to the hookswitch LED. Typically +5V for ≈ 8mA LED current.
LED is current limited by an internal 470Ω resistor. VCC should not exceed 20V.
Rev. 1
4
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