W5500 Datasheet, PDF (36/65 Pages) List of Unclassifed Manufacturers – Supports 8 independent sockets simultaneously

IMR (Interrupt Mask Register) [R/W][0x0016][0x00]
IMR is used to mask interrupts. Each bit of IMR corresponds to each bit of IR. When
a bit of IMR is „1‟ and the corresponding bit of IR is „1‟, an interrupt will be issued.
In other words, if a bit of IMR is „0‟, an interrupt will not be issued even if the
corresponding bit of IR is „1‟.
7
IM_IR7
6
IM_IR6
5
IM_IR5
4
IM_IR4
3
Reserved
2
Reserved
1
Reserved
0
Reserved
Bit
Symbol
Description
IP Conflict Interrupt Mask
7
IM_IR7
0: Disable IP Conflict Interrupt
1: Enable IP Conflict Interrupt
Destination unreachable Interrupt Mask
6
IM_IR6
0: Disable Destination unreachable Interrupt
1: Enable Destination unreachable Interrupt
PPPoE Close Interrupt Mask
5
IM_IR5
0: Disable PPPoE Close Interrupt
1: Enable PPPoE Close Interrupt
Magic Packet Interrupt Mask
4
IM_IR4
0: Disable Magic Packet Interrupt
1: Enable Magic Packet Interrupt
3~0
Reserved Reserved
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W5500 Datasheet Version1.0 (August 2013)