W5300 datasheet(10/128 Pages) WIZNET

10 / 128 page

802.3 Ethernet MAC(Media Access Control)

It controls Ethernet access of CSMA/CD(Carrier Sense Multiple Access with Collision

Detect). It is the protocol technology based on a 48-bit source/destination MAC address. It

also allows the host to control MAC layer through its 0th SOCKET. So, it is possible to

implement software TCP/IP stack together with hardware TCP/IP stack.

PPPoE(Point-To-Point Protocol over Ethernet)

It is the protocol technology to use PPP service at the Ethernet. It encapsulates the

payload(data) part of Ethernet frame as the PPP frame and transmits it. When receiving, it

de-capsulates the PPP frame. PPPoE supports PPP communication with PPPoE server

and PAP/CHAP authentication methods.

ARP(Address Resolution Protocol)

ARP is the MAC address resolution protocol by using IP address. It transmits the ARP-

reply to the ARP-request from the peer. It also sends ARP-request to find the MAC

address of the peer and processes the ARP-reply to the request.

IP(Internet Protocol)

IP is the protocol technology to support data communication at the IP layer. IP

fragmentation is not supported. It is not possible to receive the fragmented packets.

Except for TCP or UDP, all protocol number is supported. In case of TCP or UDP, use the

hardwired stack.

ICMP(Internet Control Message Protocol)

It receives the ICMP packets such as the fragment MTU, unreachable destination, and

notifies the host. After receiving Ping-request ICMP packet, it transmits Ping-reply ICMP

packet. It supports maximum 119 Byte as Ping-request size. If the size is over 119Bytes, it

is not supported.

IGMPv1/v2(Internet Group Management Protocol version 1/2)

It processes IGMP such as IGMP Join/Leave, Report at the UDP multicasting mode. Only

version 1 and 2 of IGMP logic is supported. When using upper version of IGMP, it should

be manually implemented by using IP layer.

UDP(User Datagram Protocol)

It is the protocol technology to support data communication at the UDP layer. It supports

user datagram such as unicast, multicast, and broadcast.

TCP(Transmission Control Protocol)

It is the protocol technology to support data communication at the TCP layer. It supports

“TCP SERVER” and “TCP CLIENT” communication.

W5300 internally processes all protocol communication without intervention of the host. W5300

is based on TOE(TCP/IP Offload Engine) that can maximize the host performance by reducing

the host overhead in processing TCP/IP stack.

W5300 Datasheet(PDF) 10 Page - WIZnet Co., Ltd