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Table of Contents
Lucent Technologies Inc.
Contents
Page
Figure
Page
LU5X31F
Gigabit Ethernet Transceiver
Preliminary Data Sheet
August 2000
Overview ................................................................. 1
Features .................................................................. 1
Functional Description ............................................ 3
Transmitter Section .............................................. 3
Receiver Section .................................................. 3
Byte Alignment ..................................................... 4
Parallel Output Port .............................................. 4
Loopback Mode Operation ................................... 4
Powerup Sequence .............................................. 5
Device Reset ........................................................ 5
Block Diagram ...................................................... 6
Input/Output Information ......................................... 7
Electrical Specifications ........................................ 10
Transmitter ......................................................... 10
Receiver ............................................................. 11
Timing Characteristics .......................................... 12
Serial Timing ...................................................... 12
Receiver Section Timing .................................... 13
Receiver Port Timing .......................................... 13
Transmitter Section Timing ................................ 14
Application Section ............................................... 15
Test Modes ........................................................... 17
Outline Diagrams .................................................. 19
64-Pin MQFP ..................................................... 19
64-Pin TQFP ...................................................... 20
Ordering Information ............................................. 21
Table
Page
Table 1. Definition of Bit Transmission/Reception
Order ......................................................................4
Table 2a. I/O Channel Signal Description .................8
Table 2b. I/O Control/PLL Interface Descriptions .....9
Table 2c. Power Connections ...................................9
Table 3. Reference Clock Specifications (REFCLK) 10
Table 4. PLL Characteristics ...................................10
Table 5. Output Jitter at 1.0 Gbit/s—1.25 Gbits/s Data
Rate ......................................................................10
Table 6. Input Data Rate .........................................11
Table 7. Data Lock Characteristics .........................11
Table 8. Power Dissipation* ....................................11
Table 9. dc Electrical Specifications* ......................11
Table 10. Absolute Maximum Ratings ....................11
Table 11. Serial Output Timing Levels ....................12
Table 12. Serial Input Interface Timing ...................12
Table 13. Receiver Parallel Port Timing .................13
Table 14. Transmitter Timing at Parallel Interface ..14
Table 15. External Resistor Value vs. Differential Output
Level Viewing .......................................................16
Table 16. Test Modes .............................................17
Figure 1. LU5X31F Single-Channel Gigabit Ethernet
Transceiver Functional Diagram .......................... 6
Figure 2. 64-Pin MQFP Package (14 mm) Pinout .. 7
Figure 3. Serial Interface Timing ........................... 12
Figure 4. Receiver Section Timing ........................ 13
Figure 5. Receiver Port Timing ............................. 13
Figure 6. Parallel Interface Transmit Timing ......... 14
Figure 7. Reference Clock Connections with Single-
Ended Source ..................................................... 15
Figure 8. Typical Termination for a Single-Channel,
High-Speed Serial Transmit-and-Receive Port in a
50
Backplane Application ............................... 15
Figure 9. Typical Termination for a Single-Channel,
High-Speed Serial Transmit Port Interfacing a 5 V
GBIC Transceiver ............................................... 16