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[4] UNICAST Blocking and IPv6 packet Blocking
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.
[5] Use No Delayed ACK, Multicast and Multicast Blocking mode
Use No Delayed ACK
0 : Disable No Delayed ACK option
1 : Enable No Delayed ACK option
This bit is applied only during TCP mode (P[3:0] = „0001‟).When this bit is „1‟, It sends the
ACK packet without delay as soon as a
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
W7500 Datasheet Version1.0.0
Sn_MR[3:0]
0
0
0
0
0
0
0
0
1
0
1
0
MACRAW mode should be only used in Socket 0.
Meaning
0
Closed
1
TCP
0
UDP
0
MACRAW
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