W5200 datasheet(34/88 Pages) WIZNET

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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 W5200, PPPoE server hardware address is not required to be set.

However, even if PPPoE-process of W5200 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 the PPPoE server hardware address before the OPEN command. PPPoE server

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

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

Ex) In case of Socket 0 Destination Hardware address = 08.DC.00.01.02.10, configuration is

as below,

0x4006

0x4007

0x4008

0x4009

0x400A

0x400B

0x08

0xDC

0x00

0x01

0x02

0x0A

Sn_DIPR (Socket n Destination IP Address Register)[R/W][0x400C+0x0n00 0x400F+0x0n00]

[0x00000000]

It sets or is set as destination IP address of Socket n . If SOCKET0 is used as PPPoE mode, S0_DIPR

sets PPPoE server IP address that is already known. It is valid only in TCP, UDP, IPRAW or PPPoE

mode, but ignored in MACRAW mode. At the TCP mode, when operating as "TCP CLIENT" it sets

as IP address of "TCP SERVER" before performing CONNECT command and when operating as

"TCP SERVER", it is internally set as IP address of "TCP CLIENT" after successfully establishing

connection.

At the UDP or IPRAW mode, Sn_DIPR sets as destination IP address to be used for transmitting

UDP or IPRAW DATA packet before performing SEND or SEND_MAC command.

Ex) In case of Socket 0 Destination IP address = 192.168.0.11, configure as below.

0x400C

0x400D

0x400E

0x400F

192 (0xC0)

168 (0xA8)

0 (0x00)

11 (0x0B)

Sn_DPORT (Socket n Destination Port Register)[R/W][0x4010+0x0n00-0x4011+0x0n00]

[0x00]

The destination port number is set in the Sn_DPORT of Socket n . If SOCKET 0 is used as PPPoE

mode, S0_DPORT0 sets PPP session ID that is already known. It is valid only in TCP, UDP or PPPoE

mode, and ignored in other modes.

At the TCP mode, when operating as "TCP CLIENT", it listens for the port number of the "TCP

SERVER" before performing the CONNECT command.

At the UDP mode, the destination port number is set in the Sn_DPORT to be used for transmitting

W5200 Datasheet(PDF) 34 Page - WIZnet Co., Ltd

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