Sn_Ir (Socket N Interrupt Register); Sn_Imr (Socket N Interrupt Mask Register) - Wiznet W7500 Reference Manual

0x22 SEND_KEEP
0x40 RECV

Sn_IR (Socket n Interrupt Register)

Address Offset : 0x0020
Reset value : 0x0000_0000
31 30 29 28
res Res Res res
15 14 13 12
res Res Res res
Sn_IR indicates the status of Socket Interrupt such as establishment, termination, receiving
data, timeout). When an interrupt occurs and the corresponding bit of Sn_IMR is '1', the
corresponding bit of Sn_IR becomes '1'.
[0] CONNECT Interrupt - This is issued one time when the connection with peer is successful
and then Sn_SR is changed to SOCK_ESTABLISHED
[1] DISCONNECT Interrupt - This is issued when FIN or FIN/ACK packet is received.
[2] RECV Interrupt - This is issued whenever data is received from a peer.
[3] TIMEOUT Interrupt - This is issued when ARP
[4] SENDOK Interrupt - This is issued when SEND command is completed

Sn_IMR (Socket n Interrupt Mask Register)

Address Offset : 0x0024
W7500x Reference Manual Version1.1.0
automatic ARP-process(Address
SEND_MAC transmits data without the automatic ARP-process. In
this case, the destination hardware address is acquired from
Sn_DHAR configured by host, instead of APR-process.
Valid only in TCP mode.
It checks the connection status by sending 1byte keep-alive
packet. If the peer cannot respond to the keep-alive packet during
timeout time, the connection is terminated and the timeout
interrupt will occur.
RECV completes the processing of the received data in Socket n
RX Buffer by using a RX read pointer register (Sn_RX_RD).
For more details, refer to Socket n RX Received Size Register
(Sn_RX_RSR), Socket n RX Write Pointer Register (Sn_RX_WR), and
Socket n RX Read Pointer Register (Sn_RX_RD).
27 26 25 24
res res res res
11 10 9 8
res Res res res
Resolution
23 22 21 20
res res res res
7 6 5 4
res res res
R
or TCP occurs.
TO TO
Protocol). But
19 18 17 16
res res res res
3 2 1 0
Sn_IR[4:0]
R R R R
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