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XRT71D00IQ Datasheet(PDF) 3 Page - Exar Corporation

Part # XRT71D00IQ
Description  E3/DS3/STS-1 JITTER ATTENUATOR
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Manufacturer  EXAR [Exar Corporation]
Direct Link  http://www.exar.com
Logo EXAR - Exar Corporation

XRT71D00IQ Datasheet(HTML) 3 Page - Exar Corporation

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XRT71D00
E3/DS3/STS-1 JITTER ATTENUATOR
REV. 1.2.0
I
TABLE OF CONTENTS
GENERAL DESCRIPTION .................................................................................................. 1
FEATURES ................................................................................................................................................... 1
APPLICATIONS ............................................................................................................................................. 1
Figure 1. Block Diagram of the XRT71D00 ........................................................................................... 1
Figure 2. Pin Out of the XRT71D00 (32 Lead TFQP Package) ............................................................. 2
ORDERING INFORMATION ............................................................................................... 2
TABLE OF CONTENTS...................................................................................................................................... I
PIN DESCRIPTIONS ........................................................................................................... 3
ELECTRICAL CHARACTERISTICS ................................................................................... 9
AC ELECTRICAL CHARACTERISTICS ............................................................................................................. 9
Figure 3. Input/Output Timing ................................................................................................................ 9
MICROPROCESSOR SERIAL INTERFACE TIMING ( SEE FIGURE 4 ) ................................................................. 10
Figure 4. Timing Diagram for the Microprocessor Serial Interface .................................................. 10
SYSTEM DESCRIPTION ................................................................................................... 12
Figure 5. Illustration of the XRT71D00 (configured to operate in the “Hardware” Mode) ............ 12
Figure 6. Illustration of the XRT71D00 (configured to operate in the “Host” Mode) ...................... 13
1.0 The Jitter Attenuator PLL ...................................................................................................................... 13
1.1 THE JITTER TRANSFER CHARACTERISTICS OF THE JITTER ATTENUATOR PLL .............................................................. 13
1.2 DEFINITION OF JITTER................................................................................................................................................ 13
1.3 JITTER TRANSFER CHARACTERISTICS......................................................................................................................... 13
Figure 7. Category 1 DS3 Jitter Transfer Mask .................................................................................. 14
1.3.1 Jitter Tolerance: ............................................................................................................................................ 14
1.3.2 Jitter Generation:........................................................................................................................................... 14
1.3.3 Jitter Attenuation: ..........................................................................................................................................14
1.4 XRT71D00 JITTTER TRANSFER CHARACTERISTICS .................................................................................................... 14
TABLE 1: XRT71D00 JITTER TRANSFER FUNCTION .................................................................................. 15
TABLE 2: XRT71D00 JITTER TRANSFER FUNCTION .................................................................................. 16
Figure 8. DS3 Jitter Transfer Characteristics ..................................................................................... 17
Figure 9. E3 Jitter Transfer Characteristics ........................................................................................ 17
Figure 10. STS-1 Jitter Transfer Characteristics ................................................................................ 18
TABLE 3: XRT71D00 MAXIMUM JITTER TOLERANCE ................................................................................. 19
TABLE 4: XRT71D00 MAXIMUM JITTER TOLERANCE ................................................................................. 20
2.0 Operating Mode ...................................................................................................................................... 21
2.1 HARDWARE MODE .....................................................................................................................................................21
TABLE 5: HARDWARE MODE PIN FUNCTIONS ............................................................................................. 21
2.1.1 Host Mode: ................................................................................................................................................... 21
TABLE 6: ADDRESS AND BIT FORMATS OF THE COMMAND REGISTERS ...................................................... 21
3.0 Microprocessor Serial Interface ............................................................................................................ 21
3.1 SERIAL INTERFACE OPERATION.................................................................................................................................. 21
3.1.1 Bit Descriptions ............................................................................................................................................. 21
3.2 READ OPERATION .....................................................................................................................................................22
3.3 WRITE OPERATION .................................................................................................................................................... 22
Figure 11. Microprocessor Serial Interface Data Structure ............................................................... 22
3.4 SIMPLIFIED INTERFACE OPTION .................................................................................................................................. 22
Figure 12. Timing Diagram for the Microprocessor Serial Interface ................................................ 23
PACKAGE INFORMATION ............................................................................................... 24
32 LEAD TQFP PACKAGE DIMENSIONS ............................................................................................. 24
REVISIONS ....................................................................................................................... 25
ORDERING INFORMATION ................................................................................................................... 25


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