Datasheet

W5500 Datasheet Version1.0.9 37 / 66
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
6
5
4
3
2
1
0
S7_INT
S6_INT
S5_INT
S4_INT
S3_INT
S2_INT
S1_INT
S0_INT
Bit
Symbol
Description
7
~
0
Sn_INT
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
6
5
4
3
2
1
0
S7_IMR
S6_IMR
S5_IMR
S4_IMR
S3_IMR
S2_IMR
S1_IMR
S0_IMR
Bit
Symbol
Description
7
~
0
Sn_IMR
Socket n(Sn_INT) Interrupt Mask
0: Disable Socket n Interrupt
1: Enable Socket n Interrupt