Atmel SpaceWire Router SpW-10X - Manual (Page 94)

Ref.: UoD_SpW-10X_
UserManual
Issue: 3.4
SpW-10X
SpaceWire Router
User Manual Date: 11 th
July 2008
Preliminary
94
then a packet that that is addressed to go out of the same port that it arrived on will be discarded and
a packet address error recorded.
Command reply packets which are returned through the same port they arrived on are not affected by
the value of the Enable Self-Addressing bit.
Figure 8-13 shows the Enable Self-Addressing mode when enabled and when disabled.
R1
1
2
3
4
5
6
1
R1
1
2
3
4
5
6
1 2
Packet arrives at port 1 with address 1
“Address-self mode” is enabled
Packet is routed to port 1 and packet data returns on link one
R1
1
2
3
4
5
6
1
R1
1
2
3
4
5
6
1 2
Packet arrives at port 1 with address 1
“Address-self” mode is disabled
Packet is discarded by the routing control logic
Figure 8-13 Packet Self-Addressing mode