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XRT75R03D Datasheet(PDF) 4 Page - Exar Corporation

Part # XRT75R03D
Description  THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT75R03D Datasheet(HTML) 4 Page - Exar Corporation

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XRT75R03D
REV. 1.0.2
THREE CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCRONIZER
I
TABLE OF CONTENTS
GENERAL DESCRIPTION ................................................................................................. 1
FEATURES .................................................................................................................................................... 1
APPLICATIONS .............................................................................................................................................. 1
TRANSMIT INTERFACE CHARACTERISTICS ...................................................................................................... 2
RECEIVE INTERFACE CHARACTERISTICS ........................................................................................................ 2
Figure 1. Block Diagram of the XRT 75R03D ................................................................................................... 2
Figure 2. Pin Out of the XRT75R03D ............................................................................................................... 3
ORDERING INFORMATION ................................................................................................................... 3
TABLE OF CONTENTS .................................................................................................................................... I
PIN DESCRIPTIONS (BY FUNCTION) .............................................................................. 4
SYSTEM-SIDE TRANSMIT INPUT AND TRANSMIT CONTROL PINS ...................................................................... 4
TRANSMIT LINE SIDE PINS ............................................................................................................................ 8
SYSTEM-SIDE RECEIVE OUTPUT AND RECEIVE CONTROL PINS .................................................................... 10
RECEIVE LINE SIDE PINS ............................................................................................................................ 17
GENERAL CONTROL PINS ........................................................................................................................... 18
CONTROL AND ALARM INTERFACE ............................................................................................................... 20
JITTER ATTENUATOR INTERFACE ................................................................................................................. 20
POWER SUPPLY AND GROUND PINS ............................................................................................................ 23
XRT75R03D PIN LISTING IN NUMERICAL ORDER ........................................................................................ 25
1.0 R3 Technology (reconfigurable, relayless redundancy) ............................................................... 30
1.1 NETWORK ARCHITECTURE ................................................................................................................................ 30
Figure 3. Network Redundancy Architecture ................................................................................................. 30
1.2 POWER FAILURE PROTECTION .......................................................................................................................... 30
1.3 SOFTWARE VS HARDWARE AUTOMATIC PROTECTION SWITCHING ...................................................................... 30
2.0 ELECTRICAL CHARACTERISTICS ................................................................................................. 31
TABLE 1: ABSOLUTE MAXIMUM RATINGS ............................................................................................................ 31
TABLE 2: DC ELECTRICAL CHARACTERISTICS: ................................................................................................... 31
3.0 TIMING CHARACTERISTICS ............................................................................................................ 32
Figure 4. Typical interface between terminal equipment and the XRT75R03D (dual-rail data) ...................... 32
Figure 5. Transmitter Terminal Input Timing ................................................................................................... 32
Figure 6. Receiver Data output and code violation timing .............................................................................. 33
Figure 7. Transmit Pulse Amplitude test circuit for E3, DS3 and STS-1 Rates ............................................... 33
4.0 LINE SIDE CHARACTERISTICS: ..................................................................................................... 34
4.1 E3 LINE SIDE PARAMETERS: ............................................................................................................................. 34
Figure 8. Pulse Mask for E3 (34.368 mbits/s) interface as per itu-t G.703 ..................................................... 34
TABLE 3: E3 TRANSMITTER LINE SIDE OUTPUT AND RECEIVER LINE SIDE INPUT SPECIFICATIONS ........................... 35
Figure 9. Bellcore GR-253 CORE Transmit Output Pulse Template for SONET STS-1 Applications ............ 36
TABLE 4: STS-1 PULSE MASK EQUATIONS ........................................................................................................ 36
TABLE 5: STS-1 TRANSMITTER LINE SIDE OUTPUT AND RECEIVER LINE SIDE INPUT SPECIFICATIONS (GR-253) . 37
Figure 10. Transmit Ouput Pulse Template for DS3 as per Bellcore GR-499 ................................................ 37
TABLE 6: DS3 PULSE MASK EQUATIONS ........................................................................................................... 38
TABLE 7: DS3 TRANSMITTER LINE SIDE OUTPUT AND RECEIVER LINE SIDE INPUT SPECIFICATIONS (GR-499) ..... 38
Figure 11. Microprocessor Serial Interface Structure ...................................................................................... 39
Figure 12. Timing Diagram for the Microprocessor Serial Interface ................................................................ 39
TABLE 8: MICROPROCESSOR SERIAL INTERFACE TIMINGS ( TA = 250C, VDD=3.3V± 5% AND LOAD = 10PF) ..... 39
FUNCTIONAL DESCRIPTION: ........................................................................................ 41
5.0 The Transmitter Section: ................................................................................................................. 41
Figure 13. Single-Rail or NRZ Data Format (Encoder and Decoder are Enabled) ......................................... 41
Figure 14. Dual-Rail Data Format (encoder and decoder are disabled) ......................................................... 41
5.1 TRANSMIT CLOCK: ........................................................................................................................................... 42
5.2 B3ZS/HDB3 ENCODER: .................................................................................................................................. 42
5.2.1 B3ZS Encoding: ................................................................................................................................. 42
5.2.2 HDB3 Encoding: ................................................................................................................................. 42


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