MT8972BE Zarlink Semiconductor, MT8972BE Datasheet

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MT8972BE

Manufacturer Part Number
MT8972BE
Description
Manufacturer
Zarlink Semiconductor
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MT8972BE
Manufacturer:
MITEL
Quantity:
320
Part Number:
MT8972BE
Manufacturer:
MITEL
Quantity:
20 000
Features
Applications
F0o/RCK
DSTo/Do
C4/TCK
CDSTo/
F0/CLD
DSTi/Di
CDSTi/
Full duplex transmission over a single twisted
pair
Selectable 80 or 160 kbit/s line rate
Adaptive echo cancellation
Up to 3km (8971B) and 4 km (8972B)
ISDN compatible (2B+D) data format
Transparent modem capability
Frame synchronization and clock extraction
MITEL ST-BUS compatible
Low power (typically 50 mW), single 5V supply
Digital subscriber lines
High speed data transmission over twisted
wires
Digital PABX line cards and telephone sets
80 or 160 kbit/s single chip modem
RegC
MS0
MS1
MS2
CDo
CDi
Transmit
Interface
Control
Register
Transmit/
Clock
Receive
Timing &
Control
Status
Interface
Receive
Phase Locked
Master Clock
Sync Detect
Transmit
Timing
Receive
Prescrambler
Prescrambler
DPLL
De-
Figure 1 - Functional Block Diagram
ISO
V
2
Scrambler
DD
-CMOS ST-BUS
Error
Signal
V
Descrambler
SS
Echo Canceller
Address
V
Description
The MT8971B (DSIC) and MT8972B (DNIC) are
multi-function devices capable of providing high
speed, full duplex digital transmission up to 160
kbit/s over a twisted wire pair. They use adaptive
echo-cancelling techniques and transfer data in
(2B+D) format compatible to the ISDN basic rate.
Several modes of operation allow an easy interface
to digital telecommunication networks including use
as a high speed limited distance modem with data
rates up to 160 kbit/s.
identically but with the DSIC having a shorter
maximum loop reach specification.
"DNIC" will be used to reference both devices unless
otherwise noted.
The MT8971B/72B is fabricated in Mitel’s ISO
CMOS process.
Bias
Echo Estimate
Digital Subscriber Interface Circuit
V
Ref
Digital Network Interface Circuit
Encoded Biphase
MT8971BE
MT8972BE
MT8972BC
MT8971BP
MT8972BP
+
Differentially
Transmitter
Encoded Biphase
Differentially
FAMILY
Receive
Receiver
Filter
Ordering Information
-40 C to
22 Pin Plastic DIP
22 Pin Plastic DIP
22 Pin Ceramic DIP
28 Pin PLCC
28 Pin PLCC
ISSUE 7
V
MT8971B/72B
+
Bias
Line Driver
Transmit
Both devices function
85 C
Filter &
+2
-1
MUX
The generic
May 1995
Precan
OSC2
OSC1
L
L
L
DIS
IN
OUT
OUT
9-113
9-113
2
-

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MT8972BE Summary of contents

Page 1

... CDSTo/ CDo 2 ISO -CMOS ST-BUS Digital Subscriber Interface Circuit Digital Network Interface Circuit MT8971BE MT8972BE MT8972BC MT8971BP MT8972BP Description The MT8971B (DSIC) and MT8972B (DNIC) are multi-function devices capable of providing high speed, full duplex digital transmission up to 160 kbit/s over a twisted wire pair. They use adaptive echo-cancelling techniques and transfer data in (2B+D) format compatible to the ISDN basic rate ...

Page 2

MT8971B/72B Notes: 9-114 ...

Page 3

... For more information about all Zarlink products Information relating to products and services furnished herein by Zarlink Semiconductor Inc. trading as Zarlink Semiconductor or its subsidiaries (collectively “Zarlink”) is believed to be reliable. However, Zarlink assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use ...

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