LU3X34FTR Datasheet, PDF (19/52 Pages) Agere Systems – Quad 3 V 10/100 Ethernet Transceiver TX/FX

Preliminary Data Sheet
July 2000
LU3X34FTR
Quad 3 V 10/100 Ethernet Transceiver TX/FX
Functional Description (continued)
100Base-X Module
The LU3X34FTR implements 100Base-X compliant PCS and PMA and 100Base-TX compliant TP-PMD as illus-
trated in Figure 9. Bypass options for each of the major functional blocks within the 100Base-X PCS provides flexi-
bility for various applications. 100 Mbits/s PHY loopback is included for diagnostic purposes.
RXCLK
FORX±
FOSD±
RXD[1:0]
CRS_DV
REF_CLK
TXEN
TXD[1:0]
RXD[3:0]
4B/5B
DECODE
BYP_4B5B
BYP_ALIGN
CRS
RXDV
RXEN
RX STATE MACHINE
RYP_SCR
100BASE-X RECEIVER
TPRX±
COL
TXCLK
TXEN
TXER
BYP_4B5B
TX STATE MACHINE
BYP_SCR
BYP_ALIGN
MLI-3
STATE
MACHINE
10/100
TX
DRIVER
TPTX±
FIBER
OPTIC
DRIVER
100BASE-X TRANSMITTER
Figure 9. 100Base-X Data Path
FOTX±
5-7519(F)
Lucent Technologies Inc.
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