W5500 Datasheet, PDF (37/65 Pages) List of Unclassifed Manufacturers – Supports 8 independent sockets simultaneously

SIR (Socket Interrupt Register) [R/W] [0x0017] [0x00]
SIR indicates the interrupt status of Socket. Each bit of SIR be still „1‟ until Sn_IR is
cleared by the host. If Sn_IR is not equal to „0x00‟, the n-th bit of SIR is „1‟ and INTn
PIN is asserted until SIR is „0x00‟.
7
S7_INT
6
S6_INT
5
S5_INT
4
S4_INT
3
S3_INT
2
S2_INT
1
S1_INT
0
S0_INT
Bit
Symbol
7
~
Sn_INT
0
Description
When the interrupt of Socket n occurs, the n-th bit of SIR becomes
„1‟.
SIMR (Socket Interrupt Mask Register) [R/W] [0x0018] [0x00]
Each bit of SIMR corresponds to each bit of SIR. When a bit of SIMR is „1‟ and the
corresponding bit of SIR is „1‟, Interrupt will be issued. In other words, if a bit of
SIMR is „0‟, an interrupt will be not issued even if the corresponding bit of SIR is „1‟.
7
S7_IMR
6
S6_IMR
5
S5_IMR
4
S4_IMR
3
S3_IMR
2
S2_IMR
1
S1_IMR
0
S0_IMR
Bit
Symbol
Description
7
Socket n(Sn_INT) Interrupt Mask
~
Sn_IMR
0: Disable Socket n Interrupt
0
1: Enable Socket n Interrupt
W5500 Datasheet Version1.0 (August 2013)
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