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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 470

Ω 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 470

Ω resistor. V