W5200 datasheet(29/88 Pages) WIZNET

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Sn_IR (Socket n Interrupt Register) [R] [0x4002+0x0n00] [0x00]

Sn_IR register provides information such as the type of interrupt (establishment, termination,

receiving data, timeout) used in Socket n. When an interrupt occurs and the mask bit of Sn_IMR

is ‘1’, the interrupt bit of Sn_IR becomes ‘1’.

In order to clear the Sn_IR bit, the host should write the bit as ‘1’. When all the bits of

Sn_IR is cleared (‘0’), IR(n) is automatically cleared.

PRECV

PFAIL

PNEXT

SEND_OK

TIMEOUT

RECV

DISCON

CON

Bit

Symbol

Description

PRECV

Sn_IR(PRECV) Interrupt

Valid only in case of 'SOCKET=0' and 'S0_MR(P3:P0)=S0_MR_PPPoE'

PPP Receive Interrupts when the option which is not supported is

received

PFAIL

Sn_IR(PFAIL) Interrupt

Valid only in case of 'SOCKET=0' & 'S0_MR(P3:P0)=S0_MR_PPPoE'

PPP Fail Interrupts when PAP Authentication is failed

PNEXT

Sn_IR(PNEXT) Interrupt

Valid only in case of 'SOCKET=0' & 'S0_MR(P3:P0)=S0_MR_PPPoE'

PPP Next Phase Interrupts when the phase is changed during ADSL

connection process

SEND_OK

Sn_IR(SENDOK) Interrupt

SEND OK Interrupts when the SEND command is completed

TIMEOUT

Sn_IR(TIMEOUT) Interrupt

TIMEOUT Interrupts when ARPTO or TCPTO occurs

RECV

Sn_IR(RECV) Interrupt

Receive Interrupts whenever data packet is received from a peer

DISCON

Sn_IR(DISCON) Interrupt

Disconnect Interrupts when FIN of FIN/ACK packet is received from a

peer

CON

Sn_IR(CON) Interrupt

Connect Interrupts when a connection is established with a peer

W5200 Datasheet(PDF) 29 Page - WIZnet Co., Ltd

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