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XRT83L30 Datasheet(PDF) 5 Page - Exar Corporation

Part # XRT83L30
Description  SINGLE-CHANNEL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT83L30 Datasheet(HTML) 5 Page - Exar Corporation

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XRT83L30
I
REV. 1.0.1
SINGLE-CHANNEL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR
TABLE OF CONTENTS
GENERAL DESCRIPTION .................................................................................................. 1
APPLICATIONS .............................................................................................................................................. 1
FEATURES ................................................................................................................................................... 1
Figure 1. Block Diagram of the XRT83L30 T1/E1/J1 LIU (Host Mode) ................................................. 1
Figure 2. Block Diagram of the XRT83L30 T1/E1/J1 LIU (Hardware Mode) ........................................ 2
FEATURES ................................................................................................................................................... 2
ORDERING INFORMATION ............................................................................................................... 3
Figure 3. Pin Out of the XRT83L30 ......................................................................................................... 4
TABLE OF CONTENTS ....................................................................................................... I
PIN DESCRIPTIONS BY FUNCTION ................................................................................. 5
SERIAL INTERFACE ....................................................................................................................................... 5
RECEIVER .................................................................................................................................................... 6
TRANSMITTER .............................................................................................................................................. 7
JITTER ATTENUATOR .................................................................................................................................... 9
CLOCK SYNTHESIZER ................................................................................................................................... 9
REDUNDANCY SUPPORT ............................................................................................................................. 11
TERMINATIONS ........................................................................................................................................... 11
CONTROL FUNCTION ................................................................................................................................... 13
ALARM FUNCTION/OTHER ........................................................................................................................... 14
POWER AND GROUND ................................................................................................................................. 16
FUNCTIONAL DESCRIPTION .......................................................................................... 17
MASTER CLOCK GENERATOR ..................................................................................................................... 17
Figure 4. Two Input Clock Source ........................................................................................................ 17
Figure 5. One Input Clock Source ........................................................................................................ 17
TABLE 1: MASTER CLOCK GENERATOR ..................................................................................................... 18
RECEIVER ......................................................................................................................... 18
RECEIVER INPUT ........................................................................................................................................ 18
RECEIVE MONITOR MODE ........................................................................................................................... 19
RECEIVER LOSS OF SIGNAL (RLOS) ........................................................................................................... 19
Figure 6. Simplified Diagram of -15dB T1/E1 Short Haul Mode and RLOS Condition ..................... 19
Figure 7. Simplified Diagram of -29dB T1/E1 Gain Mode and RLOS Condition ............................... 20
Figure 8. Simplified Diagram of -36dB T1/E1 Long Haul Mode and RLOS Condition ..................... 20
Figure 9. Simplified Diagram of Extended RLOS mode (E1 Only) ..................................................... 21
RECEIVE HDB3/B8ZS DECODER ............................................................................................................... 21
RECOVERED CLOCK (RCLK) SAMPLING EDGE ............................................................................................ 21
Figure 10. Receive Clock and Output Data Timing ............................................................................. 21
JITTER ATTENUATOR .................................................................................................................................. 22
GAPPED CLOCK (JA MUST BE ENABLED IN THE TRANSMIT PATH) ................................................................ 22
TABLE 2: MAXIMUM GAP WIDTH FOR MULTIPLEXER/MAPPER APPLICATIONS .............................................. 22
ARBITRARY PULSE GENERATOR ................................................................................................................. 23
Figure 11. Arbitrary Pulse Segment Assignment ................................................................................ 23
TRANSMITTER ................................................................................................................. 23
DIGITAL DATA FORMAT ............................................................................................................................... 23
TRANSMIT CLOCK (TCLK) SAMPLING EDGE ................................................................................................ 23
Figure 12. Transmit Clock and Input Data Timing .............................................................................. 24
TRANSMIT HDB3/B8ZS ENCODER .............................................................................................................. 24
TABLE 3: EXAMPLES OF HDB3 ENCODING ................................................................................................. 24
TABLE 4: EXAMPLES OF B8ZS ENCODING ................................................................................................. 24
DRIVER FAILURE MONITOR (DMO) ............................................................................................................. 24
TRANSMIT PULSE SHAPER & LINE BUILD OUT (LBO) CIRCUIT ...................................................................... 25
TABLE 5: RECEIVE EQUALIZER CONTROL AND TRANSMIT LINE BUILD-OUT SETTINGS ................................. 25
TRANSMIT AND RECEIVE TERMINATIONS .................................................................. 27


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