XR-T6165 Datasheet, PDF (1/16 Pages) Exar Corporation – Codirectional Digital Data Processor

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XR-T6165
Codirectional Digital
Data Processor
FEATURES
D Low Power CMOS Technology
D All Receiver and Transmitter Inputs and Outputs are
TTL Compatible
D Transmitter Inhibits Bipolar Violation Insertion for
Transmission of Alarm Conditions
D Alarm Output Indicates Loss of Received Bipolar
Violations
D Up to 125µs Variance of Data Transfer Timing in
Both Transmit and Receive Paths Allows Operation
in Plesiochronous Networks
D Both Receiver and Transmitter Perform Byte
Insertion or Deletion in Response to Local Clock
Slips
APPLICATIONS
May 1997–3
D CCITT G.703 Compliant 64kbps Codirectional
Interface
D Performs the Digital and Analog Functions for a
Complete 64kbps Data Adaption Unit (DAU) When
Used With the XR-T6164
GENERAL DESCRIPTION
The XR-T6165 is a CMOS device which contains the
digital circuitry necessary to interface both directions of a
64kbps data stream to 2.048Mbps transmit and receive
PCM time-slots. The XR-T6165 and the companion
XR-T6164 line interface chip together form a CCITT
G.703 compliant 64kbps codirectional interface.
The XR-T6165 contains separate transmit and receive
sections. The transmitter transforms 8 bit serial data from
a 2.048Mbps time-slot into an encoded 64kbps data
stream. The receiver, which performs the reverse
operation, decodes the 64kbps data, extracts a clock
signal, and then outputs the data to a 2.048Mbps
time-slot. The XR-T6165 provides features which allow
the repetitions and deletions of both received and
transmitted data as clock skews and transients occur.
ORDERING INFORMATION
Part No.
XR-T6165CP
XR-T6165IP
XR-T6165CD
XR-T6165ID
Package
22 Lead 400 Mil PDIP
22 Lead 400 Mil PDIP
24 Lead 300 Mil JEDEC SOIC
24 Lead 300 Mil JEDEC SOIC
Operating
Temperature Range
0°C to +70°C
–40°C to +85°C
0°C to +70°C
–40°C to +85°C
Rev. 2.02
E1990
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538 z [phone] z [phone]
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