Electronic Components Datasheet Search
  English  ▼
ALLDATASHEET.NET

X  

HT9032D Datasheet(PDF) 5 Page - Holtek Semiconductor Inc

Part # HT9032D
Description  Calling Line Identification Receiver
Download  14 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT9032D Datasheet(HTML) 5 Page - Holtek Semiconductor Inc

  HT9032D Datasheet HTML 1Page - Holtek Semiconductor Inc HT9032D Datasheet HTML 2Page - Holtek Semiconductor Inc HT9032D Datasheet HTML 3Page - Holtek Semiconductor Inc HT9032D Datasheet HTML 4Page - Holtek Semiconductor Inc HT9032D Datasheet HTML 5Page - Holtek Semiconductor Inc HT9032D Datasheet HTML 6Page - Holtek Semiconductor Inc HT9032D Datasheet HTML 7Page - Holtek Semiconductor Inc HT9032D Datasheet HTML 8Page - Holtek Semiconductor Inc HT9032D Datasheet HTML 9Page - Holtek Semiconductor Inc Next Button
Zoom Inzoom in Zoom Outzoom out
 5 / 14 page
background image
HT9032C/HT9032D
Rev. 1.40
5
September 30, 2002
Functional Description
The HT9032 is designed to be the physical layer de-
modulator for products targeted for the caller ID market.
The data signaling interface should conform to Bell 202,
which is described as follows:
· Analog, phase coherent, frequency shift keying
· Logical 1 (Mark)=1200+/
-12Hz
· Logical 0 (Space)=2200+/
-22Hz
· Transmission rate=1200bps
· Data application=serial, binary, asynchronous
The interface should be arranged to allow simple data
transmission from the terminating central office, to the
CPE (Customer Premises Equipment), only when the
CPE is in an on-hook state. The data will be transmitted
in the silent period between the first and second power
ring before a voice path is established. The transmission
level from the terminating C.O. will be
-13.5dBm+/-1.0.
The worst case attenuation through the loop is expected
to be
-20dB. The receiver therefore, should have a sen-
sitivity of approximately
-34.5dBm to handle the worst
case installations. The ITU-T V.23 is also using the FSK
signaling scheme to transmit data in the general
switched telephone network. For mode 2 of the V.23, the
modulation rate and characteristic frequencies are listed
below:
· Analog, phase coherent, frequency shift keying
· Logical 1 (Mark)=1300Hz
· Logical 0 (Space)=2100Hz
· Transmission rate=1200bps
Since the band pass filter of the HT9032 can pass the
V.23 signal, hence the HT9032 also can demodulate the
V.23 signal.
Ring detection
The data will be transmitted in the silent period between
the first and second power ring before a voice path is es-
tablished. The HT9032 should first detect a valid ring
and then perform the FSK demodulation. The typical
ring detection circuit of the HT9032 is depicted below.
The power ring signal is first rectified through a bridge
circuit and then sent to a resistor network that attenu-
ates the incoming power ring. The values of resistors
and capacitor given in the figure have been chosen to
provide a sufficient voltage at RDET1 pin to turn on the
Schmitt trigger input with approximately a 40 Vrms or
greater power ring input from tip and ring. When VT+ of
the Schmitt is exceeded, the NMOS on the pin RTIME
will be driven to saturation discharging capacitor on
RTIME. This will initialize a partial power up, with only
the portions of the part involved with the ring signal anal-
ysis enabled, including RDET2 pin. With RDET2 pin en-
abled, a portion of the power ring above 1.2V is fed to
the ring analysis circuit. Once the ring signal is qualified,
the RDET pin will be sent low.
P o w e r U p
L o g i c
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
1 . 2 V
R D E T 2
R D E T
R T I M E
V D D
0 . 2 m .
2 7 0 k W
P D W N
R D E T 1
4 7 0 k W
1 8 k W
1 5 k W
T o
B r i d g e
Operation mode
There are three operation modes of the HT9032. They are power down mode, partial power up mode, and power up
mode. The three modes are classified by the following conditions:
Modes
Conditions
Current Consumption
Power down
PDWN=
²1² and RTIME=²1²
<1
mA
Partial power up
PDWN=
²1² and RTIME=²0²
1.9mA typically
Power up
PDWN=
²0²
3.2mA typically


Similar Part No. - HT9032D

ManufacturerPart #DatasheetDescription
logo
Holtek Semiconductor In...
HT9032D HOLTEK-HT9032D Datasheet
222Kb / 10P
   Calling Line Identification Receiver
HT9032D-B HOLTEK-HT9032D-B Datasheet
222Kb / 10P
   Calling Line Identification Receiver
More results

Similar Description - HT9032D

ManufacturerPart #DatasheetDescription
logo
Holtek Semiconductor In...
HT9032C HOLTEK-HT9032C_16 Datasheet
114Kb / 11P
   Calling Line Identification Receiver
HT9032 HOLTEK-HT9032 Datasheet
222Kb / 10P
   Calling Line Identification Receiver
HT9030 HOLTEK-HT9030 Datasheet
250Kb / 6P
   Calling line identification receiver
logo
Motorola, Inc
MC14LC5447 MOTOROLA-MC14LC5447 Datasheet
267Kb / 12P
   Calling Line Identification (CLID) Receiver with Ring Detector
MC145447 MOTOROLA-MC145447 Datasheet
309Kb / 6P
   CALLING LINE IDENTIFICATION(CLID) RECEIVER WITH RING DETECTOR
logo
Nippon Precision Circui...
SM8220 NPC-SM8220 Datasheet
82Kb / 8P
   Calling Number Identification Receiver IC
logo
Zarlink Semiconductor I...
MT88E39 ZARLINK-MT88E39 Datasheet
257Kb / 16P
   Calling Number Identification Circuit
logo
Mitel Networks Corporat...
MT88E39 MITEL-MT88E39 Datasheet
98Kb / 14P
   CMOS Calling Number Identification Circuit
MT8841 MITEL-MT8841 Datasheet
101Kb / 10P
   CMOS Calling Number Identification Circuit
logo
IXYS Corporation
AN-118 IXYS-AN-118 Datasheet
118Kb / 3P
   Detecting Line Polarity Reversal Associated with BT Calling Line Identification Protocol
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14


Datasheet Download

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEET.NET
Does ALLDATASHEET help your business so far?  [ DONATE ] 

About Alldatasheet   |   Advertisement   |   Contact us   |   Privacy Policy   |   Link Exchange   |   Manufacturer List
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com