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LXT310PE Datasheet

  • LXT310PE

  • PCM TRANSCEIVER|SINGLE|T-1(DS1)|CMOS|LDCC|28PIN|PLASTIC

  • 365.67KB

  • 26頁

  • ETC

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LXT310
T1 CSU/ISDN PRI Transceiver
Datasheet
The LXT310 is the first fully integrated transceiver for T1 CSU and ISDN Primary Rate
Interface (ISDN PRI) applications at 1.544 Mbps. This transceiver operates over 6,000 feet of 22
AWG twisted-pair cable without any external components. To compensate for shorter lines, 7.5
dB, 15 dB, and 22.5 dB frequency-dependent transmit Line Build-Outs (LBOs) are provided.
The device offers selectable B8ZS encoding/decoding, and unipolar or bipolar data I/O. The
LXT310 also provides jitter attenuation in either the transmit or receive direction starting at 6
Hz, and incorporates a serial interface (SIO) for microprocessor control.
The LXT310 offers a variety of diagnostic features including loopbacks and loss of signal
monitoring. It uses an advanced double-poly, double-metal CMOS process and requires only a
single 5-volt power supply.
Applications
s
s
s
s
ISDN Primary Rate Interface (PRI) (ANSI
T1.408)
CSU Interface to T1 Service (Pub 62411)
DS1 Metallic Interface (ANSI T1.403)
T1 LAN bridge
s
s
s
s
CPU to CPU Channel Extenders
Digital Loop Carrier - Subscriber Carrier
Systems
T1 Mux
Channel Banks
Product Features
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s
s
s
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Fully integrated transceiver comprising:
on-chip equalizer; timing recovery/control;
data processor; receiver; and transmitter
with Line Build-Out and digital control
Meets or exceeds ANSI and ITU
specifications including T1.403, T1.408,
and AT&T Pub 62411
Selectable Receiver Sensitivity. Fully
restores the received signal after
transmission through a cable with
attenuation of either 0 to 26 dB, or 0 to 36
dB @ 772 kHz
Selectable Unipolar or Bipolar data I/O
Selectable B8ZS encoding/decoding
s
s
s
s
s
s
s
s
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Line attenuation indication output
138 UI jitter tolerance at 1 Hz
Output short circuit current limit protection
On-line idle mode for redundant systems
7.5 dB, 15 dB, and 22.5 dB transmit LBOs
Local, remote and inband network
loopback functions
Receive monitor with Loss of Signal (LOS)
output
Jitter attenuation starting at 6 Hz,
switchable to transmit or receive path
Microprocessor controllable
As of January 15, 2001, this document replaces the Level One document
LXT310 鈥?T1 CSU/ISDN PRI Transceiver.
Order Number: 249070-001
January 2001

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