1.1 Features
12
• Deterministic, Low Transmit and Receive
Latency
• Selectable Frequency Synchronized Clock
Output
• Dynamic Link Quality Monitoring
• TDR Based Cable Diagnostic and Cable Length
Detection
• 10/100 Mb/s Packet BIST (Built in Self Test)
• Error-Free Operation up to 150 Meters CAT5
Cable
• ESD Protection - 8 kV Human Body Model
• 2.5 V and 3.3 V I/Os and MAC Interface
• Auto-MDIX for 10/100 Mbps
• Auto-Crossover in Forced Modes of Operation
• RMII Rev. 1.2 and MII MAC Interface
• RMII Master Mode
• Synchronous Ethernet
• 25 MHz MDC and MDIO Serial Management
Interface
• IEEE 802.3u 100BASE-FX Fiber Interface
• IEEE 1149.1 JTAG
• Programmable LED Support for Link, 10 /100
Mb/s Mode, Duplex, Activity, and Collision
Detect
• Optional 100BASE-TX Fast Link Loss Detection
• Industrial Temperature Range
• 48 Pin WQFN Package (7mm) x (7mm)

1.2 Applications
• Factory Automation
• General Embedded Applications

1.3 Description
The DP83620 is a highly reliable, feature rich device suited for industrial applications. The DP83620 offers
low power consumption, including several intelligent power down states. In addition to low power, the
DP83620 is optimized for cable length performance far exceeding IEEE specifications. The DP83620
includes a 25MHz clock out. This allows the application to be designed with a minimum of external parts,
which in turn results in the lowest possible total cost of the solution.
The DP83620 offers innovative diagnostic features unique to Texas Instruments, including dynamic
monitoring of link quality during standard operation for fault prediction. These advanced features allow the
system designer to implement a fault prediction mechanism to detect and warn of deteriorating and
changing link conditions. This single port fast Ethernet transceiver can support both copper and fiber
media. The DP838620 also provides flexibility by supporting both MII and RMII interfaces.