Atmel SpaceWire Router SpW-10X 사용자 설명서
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.
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)
- 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.
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.