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4
CYG20XX
Rev. 1
Package Pinouts
Top View
18
17
1
2
8
7
9
11
10
V
CC
GND
TIP
RING
LINE 1
LINE 2
DO NOT USE
OH
RING
CYG2000/CYG2001
Top View
18
17
1
2
8
9
11
10
V
CC
GND
TIP
RING
14
13
CID1
CID2
LINE 1
LINE 2
OH
RING
CYG2020/CYG2021
Top View
18
17
1
2
8
7
9
11
10
V
CC
GND
TIP
RING
LINE 1
LINE 2
LOOPI
OH
RING
CYG2010/CYG2011
Top View
18
17
1
2
8
7
9
11
10
V
CC
GND
TIP
RING
14
13
CID1
CID2
LINE 1
LINE 2
LOOPI
OH
RING
CYG2030/CYG2031
CYG20XX Pinouts & Definitions
PIN# I/O Name Function
1 I/O LINE1 Transformer isolated audio signal coupling path for the telephone line.
2 I/O LINE2 Transformer isolated audio signal coupling path for the telephone line.
7 I LOOPI When system is off-hook (OH driven LOW) LOOPI is driven LOW continuously
on CYG2010/2011/2030/2031 devices.
N/C Keying pin for CYG2000/CYG2001, do not use.
8 I OH Driving this pin LOW asserts the off-hook condition. The hookswitch LED is cur-
rent limited by an internal 470Ω resistor.
9 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 I/O RING Connection to telephone line Ring conductor.
11 I/O TIP Connection to telephone line Tip conductor.
13 O 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 O CID1 Caller ID connection. See CID2 above.
17 I GND Connected to host system ground.
18 I V
CC
Provides power to the hookswitch LED. Typically +5V for ≈ 8mA LED current.
LED is current limited by an internal 470Ω resistor. V
CC
should not exceed 20V.
