W5300

Overview

The W5300 is a single-chip Ethernet controller integrating a 10/100 Mbps MAC, PHY, and hardware TCP/IP protocol stack. It supports 8 independent sockets with up to 50 Mbps network performance. The device features 128 KB of internal TX/RX memory, configurable per socket from 0 to 64 KB. It operates on a 3.3 V supply with 5 V I/O tolerance and includes an embedded 1.8 V regulator. The chip utilizes a 16-bit or 8-bit data bus interface and supports direct and indirect addressing modes.

Feature Summary

• Integrates fully hardwired TCP/IP protocols including TCP, UDP, IPv4, ICMP, IGMP, ARP, and PPPoE.
• Supports flexible allocation of 128 KB internal memory across 8 independent sockets.
• Provides hybrid TCP/IP stack capability allowing software and hardware stack coexistence.
• Includes embedded 10BaseT/100BaseTX Ethernet PHY with auto-negotiation and auto MDI/MDIX.

Applications

• Home Network Devices: Set-Top Boxes, PVRs, Digital Media Adapters
• Security Systems: DVRs, Network Cameras, Kiosks
• Factory and Building Automation

Procurement Notes

Verify the specific datasheet version required for design implementation, as revisions between 1.0.0 and 1.2.5 include changes to register descriptions and pin definitions. Confirm that the target system provides manual reset control, as the component does not support Power-On-Reset internally. Ensure the host interface timing aligns with the specified direct or indirect address mode requirements.

Selection Notes

Select this component when high-performance multimedia streaming requires offloading TCP/IP processing from the host MCU. It is suitable for applications needing simultaneous connections via 8 hardware sockets. Designers must account for the 150 MHz internal core frequency generated by a 25 MHz external clock. Verify compatibility with 16-bit or 8-bit bus widths based on host controller capabilities.

Part Context

Manufactured by WIZnet using 0.18 µm CMOS technology, the W5300 targets embedded internet solutions requiring stability and cost-effectiveness. It serves as a high-performance connectivity solution for multimedia data transfer in IPTV and digital television applications. The chip reduces host overhead through its TCP/IP Offload Engine (TOE) architecture.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Users should consult official WIZnet resources for current product line replacements or cross-references.

FAQ

Does the W5300 support IP fragmentation?

No, IP fragmentation is not supported. The device cannot receive fragmented packets.

What is the maximum size for a Ping-request ICMP packet?

The W5300 supports a maximum Ping-request size of 119 bytes. Requests exceeding this size are not supported.

How is the internal 1.8V power supplied?

An embedded power regulator creates 1.8V/150mA power from the 3.3V input to supply the core operation. A capacitor is recommended for stable power supply.