lxt351 Intel Corporation, lxt351 Datasheet - Page 3

• Manufacturer Part Number: lxt351
• Description: T1/e1 Short Haul Transceiver With Crystal-less Jitter Attenuation
• Manufacturer: Intel Corporation

Contents
1.0
2.0
3.0
4.0
Datasheet
Pin Assignments and Signal Descriptions
1.1
Functional Description
2.1
2.2
2.3
2.4
2.5
2.6
Register Definitions
Application Information
4.1
4.2
4.3
4.4
Mode Dependent Signals ...................................................................................... 9
Initialization..........................................................................................................13
2.1.1
Transmitter ..........................................................................................................13
2.2.1
2.2.2
2.2.3
2.2.4
2.2.5
Receiver ..............................................................................................................15
2.3.1
Jitter Attenuation .................................................................................................15
Diagnostic Mode Operation.................................................................................16
2.5.1
2.5.2
2.5.3
2.5.4
Parallel Microprocessor Interface........................................................................23
2.6.1
Transmit Return Loss ..........................................................................................29
Transformer Data ................................................................................................29
Application Circuit................................................................................................29
Line Protection ....................................................................................................29
4.4.1
T1/E1 Short Haul Transceiver with Crystal-less Jitter Attenuation — LXT351
Reset Operation .....................................................................................13
Transmit Digital Data Interface...............................................................13
Transmit Monitoring................................................................................14
Transmit Drivers .....................................................................................14
Transmit Idle Mode.................................................................................14
Transmit Pulse Shape ............................................................................14
Receive Data Recovery..........................................................................15
Loopback Modes ....................................................................................16
2.5.1.1 Local Loopback .........................................................................16
2.5.1.2 Analog Loopback.......................................................................18
2.5.1.3 Remote Loopback .....................................................................18
2.5.1.4 Dual Loopback ..........................................................................19
Internal Pattern Generation ....................................................................19
2.5.2.1 Transmit All Ones ......................................................................19
2.5.2.2 Quasi-Random Signal Source (QRSS) .....................................20
Error Insertion and Detection .................................................................21
2.5.3.1 Bipolar Violation Insertion (INSBPV) .........................................21
2.5.3.2 Logic Error Insertion (INSLER)..................................................21
2.5.3.3 Bipolar Violation Detection (BPV)..............................................21
2.5.3.4 HDB3 Code Violation Detection (CODEV) ................................21
2.5.3.5 HDB3 Zero Substitution Violation Detection (ZEROV) ..............21
Alarm Condition Monitoring ....................................................................22
2.5.4.1 Loss of Signal ............................................................................22
2.5.4.2 Alarm Indication Signal Detection .............................................22
2.5.4.3 Driver Failure Open Mode .........................................................22
2.5.4.4 Elastic Store Overflow/Underflow ..............................................22
2.5.4.5 Built-In Self Test ........................................................................23
Interrupt Handling...................................................................................23
LXT351 Application Circuit .....................................................................31
.................................................................................................24
...........................................................................................13
.........................................................................................29
...................................................... 8
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