W5300 datasheet(80/128 Pages) WIZNET

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Ex) Sn_PORTR = 5000(0x1388)

Sn_PORTR(0x0820A+0x40n/0x20A+0x40n)

Sn_PORTR0(0x0820A+0x40n/0x20A+0x40n)

Sn_PORTR1(0x0820B+0x40n/0x20B+0x40n)

0x13

0x88

Sn_DHAR (SOCKETn Destination Hardware Address Register) [R/W]

[0x0820C+0x40n/0x20C+0x40n] [FF.FF.FF.FF.FF.FF]

It sets or is set as destination hardware address of SOCKETn. Also, if SOCKET0 is used for

PPPoE mode, S0_DHAR sets as PPPoE server hardware address that is already known.

When using SEND_MAC command at the UDP or IPRAW mode, it sets destination hardware

address of SOCKETn. At the TCP, UDP and IPRAW mode, Sn_DHAR is set as destination

hardware address that is acquired by ARP-process of CONNECT or SEND command. The host

can acquire the destination hardware address through Sn_DHAR after successfully performing

CONNET or SEND command.

When using PPPoE-process of W5300, PPPoE server hardware address is not required to be

set.

However, even if PPPoE-process of W5300 is not used, but implemented by yourself with

MACRAW mode, in order to transmit or receive the PPPoE packet, PPPoE server hardware

address(acquired by your PPPoE-process), PPPoE server IP address, and PPP session ID

should be set, and MR(PPPoE) also should be set as '1'.

S0_DHAR sets PPPoE server hardware address before OPEN command. PPPoE server

hardware address which is set by S0_DHAR is applied to PDHAR after performing OPEN

command.

The configured PPPoE information is internally valid even after CLOSE command.

Ex) Sn_DHAR = 00.08.DC.01.02.10

Sn_DHAR(0x0820C+0x40n/0x20C+0x040n)

Sn_DHAR0(0x0820C+0x40n/0x20C+0x040n)

Sn_DHAR1(0x0820D+0x40n/0x20D+0x040n)

0x00

0x08

Sn_DHAR2(0x0820E+0x40n/0x20E+0x040n)

Sn_DHAR3(0x0820F+0x40n/0x20F+0x040n)

0xDC

0x01

Sn_DHAR4(0x08210+0x40n/0x210+0x040n)

Sn_DHAR5(0x08211+0x40n/0x211+0x040n)

0x02

0x10

W5300 Datasheet(PDF) 80 Page - WIZnet Co., Ltd