Datasheet

W5500 Datasheet Version1.0.9 45 / 66
When this bit is ‘1’, It sends the ACK packet without delay as soon as a
Data packet is received from a peer. When this bit is ‘0’, It sends the ACK
packet after waiting for the timeout time configured by RTR.
Multicast
0 : using IGMP version 2
1 : using IGMP version 1
This bit is applied only during UDP mode(P[3:0] = ‘0010’) and MULTI = ‘1’.
It configures the version for IGMP messages (Join/Leave/Report).
Multicast Blocking in MACRAW mode
0 : disable Multicast Blocking
1 : enable Multicast Blocking
This bit is applied only when MACRAW mode(P[3:0] = ‘0100’). It blocks to
receive the packet with multicast MAC address.
4
UCASTB
MIP6B
UNICAST Blocking in UDP mode
0 : disable Unicast Blocking
1 : enable Unicast Blocking
This bit blocks receiving the unicast packet during UDP mode(P[3:0] =
‘0010’) and MULTI = ‘1’.
IPv6 packet Blocking in MACRAW mode
0 : disable IPv6 Blocking
1 : enable IPv6 Blocking
This bit is applied only during MACRAW mode (P[3:0] = ‘0100’).
It blocks to receiving the IPv6 packet.
3
P3
Protocol
This configures the protocol mode of Socket n.
P3
P2
P1
P0
Meaning
0
0
0
0
Closed
0
0
0
1
TCP
0
0
1
0
UDP
0
1
0
0
MACRAW
* MACRAW mode should be only used in Socket 0.
2
P2
1
P1
0
P0