Transceiver
Solutions
Integrated 8-Port 10/100BASE-T
Fast Ethernet Transceiver
88E3082/88E3083
The 88E3082/88E3083 devices are third generation Marvell
簍
DSP-based 8-port 10/100BASE-T Fast Ethernet (FE)
transceivers. The devices offer the industry脮s lowest power consumption at only 150mW per port resulting
in higher port density, lower cost FE switches. Additionally, the 88E3082/88E3083 devices integrate the industry脮s
most advanced feature set, such as Virtual Cable Tester
陋
technology for remote cable diagnostics and the
support for very low power modes.
The 88E3082/88E3083 devices contain all of the active circuitry to convert data streams to and from eight
Media Access Controllers (MACs) and the physical media. The 88E3082 device incorporates IEEE 802.3u Auto-
Negotiation in support of both 100BASE-TX and 10BASE-T networks over twisted-pair cable in full-duplex or
half-duplex mode.
JTAG
TX+/-
RX+/-
PRODUCT OVERVIEW
Boundary
Scan
Auto-MDIX
Crossover
TDR
Feature
DAC
10 Mbps
Receiver
ADC
Baseline
Wander
Canceller
Digital
Adaptive
Equalizer
10 Mbps &
100 Mbps
Transmit
PCS
10 Mbps &
100 Mbps
Receive
PCS
LED
Parallel &
Serial
RMII
or
SMII
or
Source
Synchronous
SMII
(SSMII)
Interfaces
Management
Interface
TXD[1:0]
TX_EN/SYNC/TX_SYNC
CRS_DV/RX_SYNC
RXD[1:0]
RX_ER/RX_CLK
MDC
MDIO
SDET+/-
REFCLK
FX Link &
Auto-
Negotiation
Clock
Distribution
Fig 1. 88E3082 (Single-Port) Functional Block Diagram
FEATURES
樓
Eight independent IEEE 802.3 compliant 100BASE-TX and
10BASE-T ports
樓
PECL interface supporting 100BASE-FX applications on a per port
basis (88E3082 only)
樓
Reduced MII (RMII) or Serial MII (SMII) with Source Synchronous
option for reduced pin count (RMII supported on 88E3082 only)
樓
樓
樓
樓
Lower power dissipation, 150mW/port
Power management modes
Virtual Cable Tester feature
Auto-MDI/MDIX crossover for 100BASE-TX and 10BASE-T ports
BENEFITS
樓
Enable higher port density switch system design
樓
Support of FE over fiber applications (88E3083 supports one fiber port)
樓
Provides user configurable digital interfaces, and the Source
Synchronous SMII option extends the distance between the PHY and
SW/MAC chip on the PCB design
樓
Yields higher port density and lower cost
樓
Reduced system power
樓
Remote cable diagnostics for fault detection
樓
Auto-MDI/MDIX simplifies and reduces the cost of networking
installation
樓
Supports applications that demand larger packet sizes
樓
Plug-and-play network system
樓
Improved network reliability
樓
Advanced DSP design tolerates more cable mismatch and extends
the receiving distance over 150 meters on standard CAT 5 cable
樓
Jumbo frame support to 10 KB with up to +/- 150 ppm clock jitter
樓
IEEE 802.3u Auto-Negotiation support for automatic speed and
duplex selection
樓
Far End Fault Indication (FEFI) support for 100BASE-FX applications
樓
100BASE-TX performance over 150 meters
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