LU5X34F Datasheet, PDF (20/26 Pages) Agere Systems – Quad Gigabit Ethernet Transceiver

LU5X34F
Quad Gigabit Ethernet Transceiver
Application Section (continued)
Preliminary Data Sheet
July 2000
HDOUTP
10 Ω^†
ZO = 50 Ω
0.01 µF
HDINP
TXX[9:0]
TXCLK
TRANSMIT
LU5X34F
50 Ω
50 Ω
HDOUTN
10 Ω^†
100 Ω
0.1 µF
RECEIVE
LU5X34F
ZO = 50 Ω
HDINN
0.01 µF
RXX[9:0]
RXCLKX1
RXCLKX0
OLREF OLRVS
*
* External resistor connected between OLREF and OLRVS. See Table 16 for external resistor value.
† Damping resistor, maximum = 10 Ω.
Figure 9. Typical Termination for a Single-Channel, High-Speed Serial
Transmit-and-Receive Port in a 50 Ω Backplane Application
5-8811(F).c
Table 16. External Resistor Value vs. Differential Output Level Viewing
Resistor Value (Ω)
7.5 k/11.25 k
5 k/7.5 k
4 k/6 k
Termination Impedance (Ω)
50/75
Differential Output Voltage (V)
0.8
1.2
1.6
20
Lucent Technologies Inc.