HT9032C/HT9032D

Calling Line Identification Receiver

Block Diagram

Rev. 1.40

1

September 30, 2002

Features

HT9032D: 8-pin DIP/SOP package

Applications

General Description

The HT9032 calling line identification receiver is a low

power CMOS integrated circuit designed for receiving

physical layer signals transmitted according to Bellcore

TR-NWT-000030 and ITU-T V.23 specifications. The

primary application of this device is for products used to

receive and display the calling number, or message

waiting indicator sent to subscribers from the central of-

fice facilities. The device also provides a carrier detec-

tion circuit and a ring detection circuit for easier system

applications.

B a n d P a s s

. i l t e r

P o w e r U p

L o g i c

D e m o d u l a t o r

V a l i d D a t a

D e t e c t i o n

D O U T C

D O U T

I n t e r n a l

P o w e r U p

L o g i c

R i n g

A n a l y s i s

C i r c u i t

R e f e r e n c e

V o l t a g e

C l o c k

G e n e r a t o r

C D E T

R D E T

V S S

V D D

R D E T 2

T I P

R I N G

P D W N

R T I M E

R D E T 1

X 1

X 2