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NW6005 Datasheet

  • NW6005

  • ENHANCED TYPE II CALLER ID DECODER

  • 20頁(yè)

  • IDT

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ENHANCED TYPE II CALLER ID DECODER
NW6005
FEATURES
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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.
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鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
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 鈥淐PE Alerting Signal (CAS)鈥? British Telecom 鈥淚dle State
and Loop State Tone Alert Signal鈥?and ETSI 鈥淒ual Tone Alerting
Signal (DT-AS)鈥?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 擄C to +85 擄C
Packages available:
NW6005-XS 20 pin SOIC
(where 鈥榅鈥?is the revision ID)
FUNCTIONAL BLOCK DIAGRAM
OSCOUT OSCIN
CB0
CB1
CB2
VREF
Bias
Generator
PWDN
Oscillator
Control Bit
Decoder
FSKEN
PWDN
GS1EN
CASEN
MODE
GS2EN
CASEN
GS1EN
IN1+
IN1-
GS1
IN2+
IN2-
GS2
Guard Time
Dual Tone
Detector
+
-
ST/GT
DR/STD
EST
CD
Mux
+
-
GS2EN
FSK
Demodulator
FSKEN
Data/Timing Recovery
DCLK
DATA
MODE
Figure 1. Block Diagram
The IDT logo is a registered trademark of Integrated Device Technology, Inc
INDUSTRIAL TEMPERATURE RANGE
漏2002
Integrated Device Technology, Inc.
JULY 2002
DSC-6048/3

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