Data Sheet

iEthernet W5200

Sn_IR (Socket n-th 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-th. 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.

7 6 5 4 3 2 1 0

PRECV PFAIL PNEXT SEND_OK

TIMEOUT

RECV

DISCON CON

Bit Symbol Description

7 PRECV

Sn_IR(PRECV) Interrupt Mask

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

6 PFAIL

Sn_IR(PFAIL) Interrupt Mask

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

PPP Fail Interrupts when PAP Authentication is failed

5 PNEXT

Sn_IR(PNEXT) Interrupt Mask

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

4 SEND_OK

Sn_IR(SENDOK) Interrupt Mask

SEND OK Interrupts when the SEND command is completed

3 TIMEOUT

Sn_IR(TIMEOUT) Interrupt Mask

TIMEOUT Interrupts when ARP

or TCP

occurs

2 RECV

Sn_IR(RECV) Interrupt Mask

Receive Interrupts whenever data packet is received from a peer

1 DISCON

Sn_IR(DISCON) Interrupt Mask

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

peer

0 CON

Sn_IR(CON) Interrupt Mask

Connect Interrupts when a connection is established with a peer