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XR-T6166ID Datasheet

  • XR-T6166ID

  • Codirectional Digital Data Processor

  • 153.56KB

  • 16页

  • EXAR   EXAR

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XR-T6166
...the analog plus company
TM
Codirectional Digital Data
Processor
June 1997鈥?
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
Tolerance of 125碌s 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 and Provide Outputs Indicating Slip Logic
Activity
APPLICATIONS
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-T6166 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-T6166 and the companion
XR-T6164 line interface chip together form a CCITT
G.703 compliant 64kbps codirectional interface.
The XR-T6166 contains separate transmit and receive
sections. The transmitter transforms 8 bit serial data from
a 2.048Mbps time-slot into an encoded 64kbps data
ORDERING INFORMATION
Operating
Temperature Range
0掳C to +70掳C
鈥?0掳C to 85掳C
0掳C to +70掳C
鈥?0掳C to 85掳C
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-T6166 provides features which allow
the repetitions and deletions of both received and
transmitted data as clock skews and transients occur.
These slip occurrences are indicated by byte insertion
and deletion flags. Outputs are also provided for
extracted receive clock and clock recovery circuit loss of
lock.
Part No.
XR-T6166CP
XR-T6166IP
XR-T6166CD
XR-T6166ID
Package
28 Lead 600 Mil PDIP
28 Lead 600 Mil PDIP
28 Lead 300 Mil JEDEC SOIC
28 Lead 300 Mil JEDEC SOIC
Rev. 2.02
E1990
EXAR Corporation, 48720 Kato Road, Fremont, CA 94538
z
(510) 668-7000
z
(510) 668-7010
1

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