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MT88E39 Datasheet

  • MT88E39

  • CMOS Calling Number Identification Circuit(CNIC1.1)

  • 14頁

  • MITEL

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CMOS
MT88E39
Calling Number Identi鏗乧ation Circuit
Advance Information
(CNIC1.1)
Features
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1200 baud Bell 202 and CCITT V.23 Frequency
Shift Keying (FSK) demodulation
Compatible with Bellcore GR-30-CORE,
SR-TSV-002476, TIA/EIA-716 and
ETSI 300 778-1
High input sensitivity
Dual mode 3-wire data interface (Serial FSK
data stream or MT88E43 compatible 1 byte
buffer)
Internal gain adjustable ampli鏗乪r
Carrier detect status output
Uses 3.579545 MHz crystal or ceramic
resonator
3 to 5V
鹵10%
supply voltage
Low power CMOS with power down mode
Direct pin to pin replacement of MT8841 and
MT88E41
DS5035
ISSUE 3
November 1998
Ordering Information
MT88E39AS
16 Pin SOIC
-40 to +85
擄C
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Description
The MT88E39 Calling Number Identi鏗乧ation Circuit
(CNIC1.1) is a CMOS integrated circuit which
provides an interface to calling line information
delivery services that utilize 1200 baud Bell 202 or
CCITT V.23 FSK data transmission schemes. The
MT88E39 receives and demodulates the FSK signal
and outputs the data into a simple dual mode 3-wire
serial interface which eliminates the need for an
UART.
The MT88E39 is Bellcore, ETSI and NTT compatible
and can operate in 3V and 5V applications. It is a pin
to pin replacement of the MT8841 and MT88E41 by
operating in the MT88E41 FSK interface mode
(mode 0) when placed in a MT88E41 socket. New
designs may also choose the MT88E43 compatible
interface (mode 1) where the microcontroller reads
the FSK byte from a 1 byte buffer.
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Applications
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Global (North America, Japan, Europe) FSK
based CID (Calling Identity Delivery) / CLIP
(Calling Line Identity Presentation)
Feature phones, adjunct boxes
FAX machines
Telephone answering machines
Computer Telephony Integration (CTI)
Battery powered applications
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GS
IN-
IN+
-
+
Receive
Bandpass
Filter
FSK
Demodulator
Data and Timing
Recovery
DATA
DR
DCLK
CAP
V
Ref
Bias
Generator
Carrier
Detector
CD
Clock
Generator
to other
circuits
PWDN
OSC1 OSC2
V
SS
V
DD
MODE
IC
Figure 1 - Functional Block Diagram
5-1

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