LAN8841
Gigabit Ethernet Transceiver with GMII/MII/
RGMII and IEEE 1588v2 Support
• Interrupt Pin Option
Features
• Power-Down and Power-Saving Modes
• Operating Voltages
• Single-Chip 10/100/1000 Mbps Ethernet Trans-
ceiver Suitable for IEEE 802.3 Applications
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Core (VDD, VDDAL, VDDAL_PLL)
VDD I/O (VDDIO): 3.3V, 2.5V, or 1.8V
Transceiver (VDDAH): 3.3V or 2.5V
• GMII/MII Standard Interface with 3.3V/2.5V/1.8V
Tolerant I/Os
• RGMII with 3.3V/2.5V/1.8V Tolerant I/Os
• Available in commercial (0°C to +70°C) and
extended industrial (-40°C to +105°C)
temperature ranges
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RGMII Timing Supports On-Chip Delay According
to RGMII Version 2.0, with Programming Options
for External Delay and Making Adjustments and
Corrections to TX and RX Timing Paths
• 64-pin VQFN (8 mm × 8 mm) Package
• Auto-Negotiation to Automatically Select the
Highest Link-Up Speed (10/100/1000 Mbps) and
Duplex (Half/Full)
Target Applications
• Industrial Control
• On-Chip Termination Resistors for the Differential
Pairs
• Laser/Network Printer
• Network Attached Storage (NAS)
• Network Server
• On-Chip LDO Controller to Support Single 3.3V
Supply Operation
• Broadband Gateway
• Gigabit SOHO/SMB Router
• IPTV
• Jumbo Frame Support Up to 16 KB
• 125 MHz Reference Clock Output
• Energy-Detect Power-Down Mode for Reduced
Power Consumption When Cable is Not Attached
• IP Set-Top Box
• EtherSynch® IEEE 1588v2/PTP
• Game Console
• IP Camera
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Layer 2, UDP/IPv4 and UDP/IPv6 formats
Tagged and non-tagged frame formats
One-step and two-step modes of operation
• Triple-Play (Data, Voice, Video) Media Center
• Media Converter
• Energy Efficient Ethernet (EEE) Support with
Low-Power Idle (LPI) Mode and Clock Stoppage
for 100BASE-TX/1000BASE-T and Transmit
Amplitude Reduction with 10BASE-Te Option
• Wake-On-LAN (WOL) Support with Robust
Custom-Packet Detection
• Programmable LED Outputs for Link, Activity, and
Speed
• Baseline Wander Correction
• LinkMD® TDR-based Cable Diagnostic to Identify
Faulty Copper Cabling
• Signal Quality Indication
• Parametric NAND Tree Support to Detect Faults
Between Chip I/Os and Board
• Loopback Modes for Diagnostics
• Automatic MDI/MDI-X Crossover to Detect and
Correct Pair Swap at All Speeds of Operation
• Automatic Detection and Correction of Pair
Swaps, Pair Skew, and Pair Polarity
• MDC/MDIO Management Interface for PHY
Register Configuration
2022 Microchip Technology Inc. and its subsidiaries
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