NW6005 Datasheet, PDF (1/20 Pages) Integrated Device Technology – ENHANCED TYPE II CALLER ID DECODER

ENHANCED TYPE II CALLER ID DECODER
NW6005
FEATURES
• 1200 baud Bell 202 and ITU-T V.23 Frequency Shift Keying
(FSK) Demodulation
• Compliant with following specifications:
Bellcore GR-30-CORE & SR-TSV-002476
TIA/EIA-716, TIA/EIA-777 Draft
British Telecom (BT) SIN227 & SIN242
ETSI ETS 300 778-1 and -2
• Bellcore “CPE Alerting Signal (CAS)”, British Telecom “Idle State
and Loop State Tone Alert Signal” and ETSI “Dual Tone Alerting
Signal (DT-AS)” detection
• Two seperate OP amps with adjustable gain for Tip/Ring and
Telephone Hybrid connections
• Monitoring of the stop bit for framing error check
• Serial FSK data interface with selectable output of bit stream or 1
byte buffer
• FSK carrier detection
• 3 V or 5 V operation
• Low power CMOS with intelligent powerdown mode
• Operating temperature range: -40 °C to +85 °C
• Packages available:
NW6005-XS 20 pin SOIC
(where ‘X’ is the revision ID)
DESCRIPTION
The NW6005 device is a single-chip, 3/5 Volt CMOS caller ID with
call waiting detection circuit. It can receive signals following Bellcore
GR-30-CORE & SR-TSV-002476, BT SIN227 & SIN242, and ETSI
ETS 300 788-1/-2 specifications.
The NW6005 provides 1200 baud Bell 202 and ITU-T V.23 FSK
demodulation and CAS/DT-AS detection. Two seperate differential
input amplifiers allow the device to be connected with both Tip/Ring
and Telephone Hybrid receive pair. FSK demodulation is
implemented only on Tip/Ring, while DT-AS (or CAS) detection can be
on either Tip/Ring or Hybrid Receive. In addition, NW6005 provides a
serial FSK data interface via which the data can be selected to be
processed as a bit stream or extracted from a 1 byte built-in buffer.
The device can be used in feature or cordless phones for BT
Calling Line Identity Presentation (CLIP), CCA CLIP and Bellcore
Calling Identity Delivery (CID) systems. It can also be used in caller ID
boxes, modem, fax machines, answering machines, database query
systems and Computer Telephony Integration (CTI) systems.
FUNCTIONAL BLOCK DIAGRAM
OSCOUT OSCIN
CB0 CB1 CB2
VREF
IN1+
IN1-
GS1
IN2+
IN2-
GS2
Bias
Generator
PWDN
GS1EN
+
-
+
-
GS2EN
Oscillator
CASEN
Dual Tone
Detector
FSK
Demodulator
FSKEN
Control Bit
Decoder
PWDN ^FSKEN GS1EN
CASEN MODE
GS2EN
Guard Time
Data/Timing Recovery
MODE
ST/GT
DR/STD
EST
CD
DCLK
DATA
Figure 1. Block Diagram
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INDUSTRIAL TEMPERATURE RANGE
©2002 Integrated Device Technology, Inc.
JULY 2002
DSC-6048/3