Atmel SpaceWire Router SpW-10X - Manual (Page 53)

Ref.: UoD_SpW-10X_
UserManual
Issue: 3.4
SpW-10X
SpaceWire Router
User Manual Date: 11 th
July 2008
Preliminary
53
7.2 PACKET PRIORITY
Each packet which is input to the router has an associated priority level, either as a result of the
packet address or the internal routing table. Two priority levels HIGH and LOW are supported.
The table below defines the priority levels for packet addresses
Table 7-2 Packet Priority Mapping
Packet Address Packet Priority Physical Port type
0 HIGH Configuration port
1 HIGH SpaceWire link port 1
2 HIGH SpaceWire link port 2
3 HIGH SpaceWire link port 3
4 HIGH SpaceWire link port 4
5 HIGH SpaceWire link port 5
6 HIGH SpaceWire link port 6
7 HIGH SpaceWire link port 7
8 HIGH SpaceWire link port 8
9 HIGH External FIFO port 1
10 HIGH External FIFO port 2
11-31 N/A Invalid addresses
32-255 Dependent on routing table
- Default LOW
- May be configured HIGH (see section
9.3) Logical addresses
7.3 PACKET HEADER DELETION
Header deletion is performed on packets dependent on the packet address. Packets which have path
addresses or logical addresses which have the header deletion bit set in the routing table have the
header address byte removed before the packet is routed to the destination.
The table below defines the header deletion settings for each address.