W5300 datasheet(70/128 Pages) WIZNET

70 / 128 page

Symbol

Meaning

Sn_MR_CLOSE

Closed

Sn_MR_TCP

TCP

Sn_MR_UDP

UDP

Sn_MR_IPRAW

IP RAW

S0_MR_MACRAW

MAC RAW

S0_MR_PPPoE

S0_MR_MACRAW and S0_MR_PPPoE are valid only in SOCKET0.

S0_MR_PPPoE

temporarily

used

for

PPPoE

server

connection/termination. After PPPoE connection is established, it can be

used as another protocol.

Sn_CR (SOCKETn Command Register) [R/W] [0x08202+0x40n/0x202+0x40n] [0x--00]

It sets command type such as open, close, connect, listen, send, recv for SOCKETn. When

W5300 detects any command, Sn_CR is automatically cleared to 0x00. Even though Sn_CR is

cleared to 0x00, the command can be still performing. It can be checked by Sn_IR or Sn_SSR if

command is completed or not.

Sn_CR(0x08202+0x40n/0x202+0x40n)

Sn_CR0(0x08202+0x40n/0x202+0x40n)

Sn_CR1(0x08203+0x40n/0x203+0x40n)

Reserved

Command

Sn_CR(7:0)/Sn_CR1(7:0)

Value

Command

Description

0x01

OPEN

It initializes SOCKETn and opens according to protocol type set in

Sn_MR(P3:P0).

Below is the value change of Sn_SSR according to Sn_MR(P3:P0)

Sn_MR(P3:P0)

Sn_SSR

Sn_MR_CLOSE

Sn_MR_TCP

SOCK_INIT

Sn_MR_UDP

SOCK_UDP

Sn_MR_IPRAW

SOCK_IPRAW

S0_MR_MACRAW

SOCK_MACRAW

S0_MR_PPPoE

SOCK_PPPoE

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