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LXT386LE Datasheet(PDF) 34 Page - Intel Corporation

Part # LXT386LE
Description  QUAD T1/E1/J1 Transceiver
PDF  78 Pages
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Manufacturer  INTEL [Intel Corporation]
Direct Link  http://www.intel.com
Logo INTEL - Intel Corporation

LXT386LE Datasheet(HTML) 34 Page - Intel Corporation

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LXT386 — QUAD T1/E1/J1 Transceiver
34
Datasheet
3.9
Hitless Protection Switching (HPS)
The LXT386 transceivers include an output driver tristatability feature for T1/E1 redundancy
applications. This feature greatly reduces the cost of implementing redundancy protection by
eliminating external relays. Please refer to Application Note 119 for guidelines for implementing
redundancy systems for both T1 and E1 operation using the LXT380/1/4/6.
3.10
Operation Mode Summary
Table 4 lists summarizes all LXT386 hardware settings and corresponding operating modes.
Table 4.
Operation Mode Summary
MCLK
TCLK
LOOP1
Receive Mode
Transmit Mode
Loopback
Clocked
Clocked
Open
Data/Clock recovery
Pulse Shaping ON
No Loopback
Clocked
Clocked
L
Data/Clock recovery
Pulse Shaping ON
Remote Loopback
Clocked
Clocked
H
Data/Clock recovery
Pulse Shaping ON
Analog Loopback
Clocked
L
Open
Data/Clock recovery
Power down
No Loopback
Clocked
L
L
Data/Clock Recovery
Power down
No effect on op.
Clocked
L
H
Data/Clock Recovery
Power down
No Analog Loopback
Clocked
H
Open
Data/Clock Recovery
Transmit All Ones
No Loopback
Clocked
H
L
Data/Clock Recovery
Pulse Shaping ON
Remote Loopback
Clocked
H
H
Data/Clock Recovery
Transmit All Ones
No effect on op.
L
Clocked
Open
Power Down
Pulse Shaping ON
No Loopback
L
Clocked
L
Power Down
Pulse Shaping ON
No Remote Loopback
L
Clocked
H
Power Down
Pulse Shaping ON
No effect on op.
L
H
Open
Power Down
Pulse Shaping OFF
No Loopback
L
H
L
Power Down
Pulse Shaping OFF
No Remote Loop
L
H
H
Power Down
Pulse Shaping OFF
No effect on op.
L
L
X
Power Down
Power down
No Loopback
H
Clocked
Open
Data Recovery
Pulse Shaping ON
No Loopback
H
Clocked
L
Data Recovery
Pulse Shaping OFF
Remote Loopback
H
Clocked
H
Data Recovery
Pulse Shaping ON
Analog Loopback
H
L
Open
Data Recovery
Power down
No Loopback
H
L
L
Data Recovery
Pulse Shaping OFF
Remote Loopback
H
H
Open
Data Recovery
Pulse Shaping OFF
No Loopback
H
H
L
Data Recovery
Pulse Shaping OFF
Remote Loopback
H
H
H
Data Recovery
Pulse Shaping OFF
Analog Loopback
1. Hardware mode only.



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