Data Sheet

iEthernet

W5200

0x22

SOCK_UDP It is the status that SOCKETn is open as UDP mode. It is

changed to SOCK_UDP when Sn_MR(P3:P0) is Sn_MR_UDP

and OPEN command is performed. DATA packet can be

transferred without connection that is necessary to TCP

mode SOCKET.

0x32

SOCK_IPRAW The socket is opened in IPRAW mode. The SOCKET status is

change to SOCK_IPRAW when Sn_MR (P3:P0) is

Sn_MR_IPRAW and OPEN command is used. IP Packet can be

transferred without a connection similar to the UDP mode.

0x42

SOCK_MACRAW It is changed to SOCK_MACRAW in case of S0_CR=OPEN and

S0_MR (P3:P0)=S0_MR_MACRAW. MACRAW packet (Ethernet

frame) can be transferred similar to UDP mode.

0x5F

SOCK_PPPOE It is the status that SOCKET0 is open as PPPoE mode. It is

changed to SOCK_PPPoE in case of S0_CR=OPEN and S0_MR

(P3:P0)=S0_MR_PPPoE . It is temporarily used at the PPPoE

connection.

Below is shown during changing the status.

Value Symbol Description

0x15 SOCK_SYNSENT This status indicates that a connect-request (SYN packet) is

sent to a "TCP SERVER". This status shows changing process

from SOCK_INIT to SOCK_ESTABLISHED by CONNECT

command. At this status, if connect-accept (SYN/ACK

packet) is received from "TCP SERVER", it is automatically

changed to SOCK_ ESTBLISHED. If SYN/ACK packet is not

received from the "TCP SERVER" before TCPTO occurs

(Sn_IR(TIMEOUT)=‘1’), it is changed to SOCK_CLOSED.

0x16 SOCK_SYNRECV This status indicate that a connect-request(SYN packet) is

received from a "TCP CLIENT". It is automatically changed

to SOCK_ESTABLISHED when W5200 successfully transmits

connect-accept (SYN/ACK packet) to the "TCP CLIENT". If it

is failed, TCPTO occurs (Sn_IR(TIMEOUT)=‘1’), and it is

changed to SOCK_CLOSED

0x18 SOCK_FIN_WAIT These status shows that Socket n is closed. It is observed

in the disconnect-process of active close or passive close. It

is changed to SOCK_CLOSED, when disconnect-process is

successfully finished or TCPTO occurs (Sn_IR (TIMEOUT)

=‘1’).

0x1A SOCK_CLOSING

0X1B SOCK_TIME_WAIT