ST952 datasheet(2/12 Pages) STMICROELECTRONICS

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PIN LIST

Pin Number

Name

Type

Description

Output

Isolation Signal Output

Output

Isolation Signal Output

RIN

Input

Ring Signal Input

Input

Isolation Control Signal Input

Input

Isolation Control Signal Input

TOFF

Supply

Internal Reference Supply

LIM2

Input

Loop Current Limiter Control

LIM1

Output

Loop Current Limiter Control

IDC

Output

Caller ID Control Output

COM

Output

Off-hook & ID Commun Output

OHC

Output

Off-hook Control Output

N.C.

Not Connected

N.C.

Not Connected

IREF

Input

Current Reference Setting

VDREF

Supply

Internal Reference Pin

TER2

Output

Current Regulator Control Feedback

TER1

Output

Current Regulator Control Output

SET

Input

Current Regulator Filter

VDR

Supply

Line DC Voltage Regulator

LINE

Output

Line AC Signal Output

IDG

Input

Caller ID Voltage Reference Input

IDI

Input

Caller ID Signal Input

LINI

Input

Line AC Signal Input

GAIN

Input

Transmit Gain / Trans-Hybrid Loss Set

LCOM

Ground

Line Side Common Ground

AIN

Input

Analog Transmit Signal Input

AOUT

Output

Analog Transmit Signal Output

N.C.

Not Connected

N.C.

Not Connected

Input

Isolation Signal Input

Input

Isolation Signal Input

LCOM

Ground

Line Side Common Ground

Note : Pins 12, 13, 28 and 29 must be left opened.

ST952

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