Features: 10 Mbits/s Transceiver
Compatible with IEEE * 802.3 10Base-T standard for twisted-pair cable
Autopolarity detection and correction
Adjustable squelch level for extended line length capability (two levels)
Interfaces with IEEE 802.3u media independent interface (MII) or a serial 10 Mbits/s 7-pin interface
On-chip filtering eliminates the need for external filters
Half- and full-duplex operations
100 Mbits/s TX Transceiver
Compatible with IEEE 802.3u MII (clause 22), PCS (clause 23), PMA (clause 24), autonegotiation (clause 28), and PMD (clause 25) specifications
Scrambler/descrambler bypass
Encoder/decoder bypass
3-statable MII in 100 Mbits/s mode
Selectable carrier sense signal generation (CRS) asserted during either transmission or reception in half duplex (CRS asserted during reception only in full duplex)
Selectable MII or 5-bit code group interface
Full- or half-duplex operations
Optional carrier integrity monitor (CIM)
On-chip filtering and adaptive equalization that eliminates the need for external filtersPinout
Specifications
|
Parameter |
Min |
Symbol |
Max |
Unit |
|
Ambient Operating Temperature |
0 |
T A |
70 |
°C |
|
Storage Temperature |
-40 |
T stg |
125 |
°C |
|
Power Dissipation |
- |
P D |
3.5 |
W |
|
Voltage on Any Pin with Respect to Ground |
-0.5 |
- |
V DD + 0.5 |
V |
|
Maximum Supply Voltage |
- |
- |
5.5 |
V |
DescriptionThe bused mode LU3X54FTL has two additional submodes of
operation:
Separate Bused MII Mode. This mode is designed to operate with two independent repeater ICs, one repeater operating at 100 Mbits/s and the other operating at 10 Mbits/s.
Figure 6 shows a block diagram of this mode LU3X54FTL in which separate pins (four of each) are used for COL_10(4), COL_100(4), CRS_10(4), CRS_100(4), RX_EN10(4), RX_EN100(4), TX_EN10 (4), and TX_EN100(4).
The signals RX_CLK10, RXD_10, TX_CLK10, and TXD_10 (all from ports A, B, C, and D) of LU3X54FTL are internally bused together and connected to MII port B. The signals TX_CLK25, TXD_100[3:0], TX_ER, RX_CLK25, RXD_100[3:0], RX_DV, and RX_ER (all
rom ports A, B, C, D) are internally bused together and connected to MII port A.
The repeater ICs LU3X54FTL will enable the particular port to which it will communicate by enabling the port with\ TX_EN 10, TX_EN100, RX_EN10, or RX_EN100.
LU3X54FTL Data Sheet
