參數(shù)資料
型號(hào)： LU3X54FTL
英文描述： QUAD-FET for 10Base-T/100Base-TX/FX
中文描述： 四核10Base-T/100Base-TX/FX場(chǎng)效應(yīng)管
文件頁(yè)數(shù)： 22/54頁(yè)
文件大?。?/td> 677K
代理商： LU3X54FTL
LU3X54FT
QUAD-FET for 10Base-T/100Base-TX/FX
Data Sheet
July 2000
22
Lucent Technologies Inc.
Pin Information
(continued)
Pin Descriptions
(continued)
Table 5. MII Management Pins
Table 6. 10/100 Mbits/s Twisted-Pair (TP) Interface Pins
Pin
113
Signal
MDC
Type
I
Description
Management Data Clock.
This is the timing reference for the transfer of
data on the MDIO signal. This signal may be asynchronous to RX_CLK and
TX_CLK. The maximum clock rate is 12.5 MHz.
When running MDC above 6.25 MHz, MDC must be synchronous with
LSCLK and have a setup time of 15 ns and a hold time of 5 ns with respect
to LSCLK. When using an external crystal instead of an LSCLK input, the
maximum MDC rate is 6.25 MHz.
Management Data Input/Output.
This I/O is used to transfer control and
status information between the LU3X54FT and the station management.
Control information is driven by the station management synchronous with
MDC. Status information is driven by the LU3X54FT synchronous with MDC.
This pin requires an external 1.5
k
pull-up resistor.
Maskable Status Interrupt.
This pin will go high whenever there is a
change in status as defined in Table 22.
112
MDIO
I/O
53
MASK_STAT_INT
O
Pin
Signal
Type
Description
5
9
16
20
TPIN+/
FOIN+[D:A]
I
Received Data.
Positive differential received 125 Mbaud MLT3, or 10 Mbaud
Manchester data from magnetics.
Fiber-Optic Data Input.
Positive differential received 125 Mbaud pseudo-
ECL data from fiber transceiver.
Received Data.
Negative differential received 125 Mbaud MLT3 or 10 Mbaud
Manchester data from magnetics.
Fiber-Optic Data Input.
Negative differential received 125 Mbaud pseudo-
ECL data from fiber transceiver.
Transmit Data.
Positive differential transmit 125 Mbaud MLT3, or 10 Mbaud
Manchester data to magnetics.
Fiber-Optic Data Output.
Positive differential transmit 125 Mbaud pseudo-
ECL compatible data to fiber transceiver.
Transmit Data.
Negative differential transmit 125 Mbaud MLT3, 10 Mbaud
Manchester data to magnetics.
Fiber-Optic Data Output.
Negative differential transmit 125 Mbaud pseudo-
ECL compatible data to fiber transceiver.
Fiber-Optic Signal Detect.
Pseudo-ECL input signal which indicates
whether or not the fiber-optic receive pairs (FOIN+/–) are receiving valid sig-
nal levels. These inputs are ignored when not in fiber mode, and should be
grounded.
6
10
17
21
TPIN–/
FOIN–[D:A]
I
32
36
46
50
TPOUT+/
FOOUT+[D:A]
O
33
37
47
51
TPOUT–
FOIN–[D:A]
O
3
2
85
84
FOSD[D:A]
I
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