1 Features
• Ultra Small Form Factor 10/100Mbps PHY : QFN
3mm × 3mm, 24 pin
• Cable reach up to 150 meters
• Very low power consumption < 127mW
• Integrated MDI and MAC termination resistors
• Programmable energy saving modes
– Active sleep
– Deep power-down
– Energy Efficient Ethernet (EEE) IEEE 802.3az
– EEE support for legacy MAC
– Wake-on-LAN (WoL)
• Voltage mode line driver
• MAC interface : RMII (master and slave mode)
• Single 3.3V power supply
• I/O voltages: 1.8V and 3.3V
• Repeater : RMII back-to-back mode in unmanaged
mode
• MDC/MDIO Interface for configuration and status
• Fast link drop modes
• Diagnostics tools: cable diagnostics, built-in self
test (BIST), loopback modes
• Programmable Hardware interrupt pin
• Operating temperature range: –40°C to 85°C
• Compliant to IEEE 802.3 100BASE-TX and
10BASE-Te specification

2 Applications
• Building automation: IP camera, HMI
• Motor Drives
• Electronic point of sale
• Factory automation

3 Description
The DP83825I is an ultra small form factor, very
low power Ethernet Physical Layer transceiver with
integrated PMD sublayers to support 10BASE-Te,
100BASE-TX Ethernet protocols. The PHY supports
up to 150 meters reach over CAT5e cable. The
DP83825I interfaces directly to twisted pair media via
an external transformer.
The DP83825I also supports Energy Efficient
Ethernet, Wake-on-LAN and MAC isolation to further
lower the system power consumption. Energy Efficient
Mode can be enabled through register configuration
for legacy MACs not supporting EEE signaling over
MAC. DP83825I can operate in unmanaged repeater
mode. In this mode, DP83825I works as a repeater
without register configuration. The DP83825I offers
integrated cable diagnostic tools, built-in self-test and
loopback capabilities for ease of development and
debug.