88X3140 Datasheet, PDF (1/2 Pages) –

Marvell Alaska X 88X3140/3120
Alaska X 88X3140 and 3120 Quad and Dual Port
10GBASE-T/1000BASE-T/100BASE-TX Transceivers with Low Power,
Low Latency and Energy Efficient Ethernet Support
PRODUCT OVERVIEW
Marvell^®’s fourth generation PHY transceivers Alaska^® X 88X3140 and 3120 provide a mixed-signal solution that
performs physical layer functions for 10Gbps transmission over twisted pair wiring compliant with the 10GBASE-T
standard published as IEEE Std 802.3an^TM. The 88X3140 and 3120 also support 1000Mbps and 100Mbps speeds
compliant with the IEEE Std 802.3^TM-2005. The 88X3140 and 3120 are based on a multi-patented and proven PHY
architecture that has demonstrated best in class performance and is currently in volume production.
Key features of the 88X3140 and 3120 include a small footprint, low power consumption, support for 100m
(2.5W per port) and optional 30m short reach modes. Both transceivers also support a unique interoperable data
center reach mode that supports links up to 7m, with 1.9W power consumption and 1.5micro-second latency. The
88X3140 and 3120 are fully compliant with the IEEE Std 802.3an^TM, and also support 100BASE-TX and 1000BASE-T,
with Clause 28 auto-negotiation. The transceivers interface to the host over XAUI, RXAUI or XFI interfaces, with
modifications to support SGMII.
88X3140 and 3120 are an ideal solution for dual and quad port Ethernet server adapters, high density LAN switch to
server, LAN switch to switch, iSCSI based IP storage and test equipment designs.
BLOCK DIAGRAM
TX DAC
LNA
PGA
AAF
RX ADC
PLL
Clock
Gen
Bias
Gen
PMA TXTH
Precoding
TX PCS
Scrambler
LDPC
Encoder
100/1000BASE-T
PHY
PMA/PCS
RX PMA
Equilizer
Echo/NEXT
FEXT
Canceller
EEE Control
Management &
Control Logic
LED Drivers
RX PCS
Descrambler
LDPC
Decoder
MDIO
Registers
MDIO
Interface
Fig 1. 88X3140 and 3120 Block Diagram (one port)