W5100S datasheet(43/110 Pages) WIZNET

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W5100S Datasheet Version1.2.5

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response, KA Packet is retransmitted. After Retransmission Time, Sn_IR

[TIMEOUT] is set to ‘1’ and Sn_SR is changed to SOCK_CLOSED.

(Ref 4.3.3.2 Keep AliveKeep )

0x40

RECV

SOCKET RECV Command

After reading received Data from SOCKET n RX Buffer Block, HOST

updates Sn_RX_RD (SOCKET n Read Pointer Register) with RECV

Command.

(Ref 3.2.18 Sn_RX_RSR (SOCKET n RX Received Size Register), 3.2.20

Sn_RX_WR (SOCKET n RX Write Pointer Register), 3.2.16 Sn_RX_RD

(SOCKET n RX Read Pointer Register))

3.2.3 Sn_IR (SOCKET n Interrupt Register)

[RW] [0x0002+0x0100*(n+4)] [0x00]

When Sn_IR Event occurs, the corresponding Interrupt Bit is set to ‘1’.

SENDOK

TIMEOUT

RECV

DISCON

CON

Bit

Symbol

Description

[7:5]

Reserved

SENDOK

SEND OK Interrupt

1 : When SEND Command is completed

0 : When others

TIMEOUT

TIMEOUT Interrupt

1 : When the number of retransmission is exceeded Sn_RCR (SOCKET

Retransmission Count Register) in ARP or TCP communication.

0 : When others

RECV

RECEIVED Interrupt

1 : When SOCKET received Data or Data still remained in SOCKET n RX

Buffer Block after Sn_CR [RECV]

0 : When others

DISCON

DISCONNECTED Interrupt

1: When FIN Packet sent and disconnection completed, or When FIN

Packet received or RST Packet received.

0 : When others

CON

CONNECTED Interrupt

1 : When TCP Connection is successfully done. (Sn_MR [3:0]=’TCP)

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