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SpaceWire Router |
| UserManual | |
Issue: | 3.4 | ||
User Manual | |||
Date: | 11th July 2008 | ||
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7. SPACEWIRE ROUTER PACKET TYPES
This section describes how the routing control logic interprets packets.
7.1 PACKET ADDRESSES
The routing control logic interprets the first byte of each received packet as the packet address. The packet address defines the physical ports through which the routing control logic will use to route the packet towards its destination.
Packets which have a path address
The physical port addresses for the SpaceWire router and the expected packet type is defined in the table below. The packet types can be viewed in section 0.
Table
Packet Address | Expected Packet Type | Physical Port type |
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0 | Command packet | Configuration port |
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1 | Any type | SpaceWire link port 1 |
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2 | Any type | SpaceWire link port 2 |
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3 | Any type | SpaceWire link port 3 |
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4 | Any type | SpaceWire link port 4 |
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5 | Any type | SpaceWire link port 5 |
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6 | Any type | SpaceWire link port 6 |
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7 | Any type | SpaceWire link port 7 |
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8 | Any type | SpaceWire link port 8 |
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9 | Any type | External FIFO port 1 |
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10 | Any type | External FIFO port 2 |
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N/A | Invalid addresses | |
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Any type | Logical addresses | |
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Note that logical address 255 is reserved in the SpaceWire standard [AD1].
Preliminary | 52 |