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SpaceWire Router |
| UserManual | |
Issue: | 3.4 | ||
User Manual | |||
Date: | 11th July 2008 | ||
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7.6.9 Source Path Address Field
The RMAP command field “source path address length” indicates the number of source path addresses which are expected in the packet. Up to 12 source path addresses can be accepted by the router configuration port. The source path addresses shall be decoded by the SpaceWire router as follows.
•Leading zero source path address bytes are not returned in the RMAP reply packet.
•If the source path address contains only zero bytes the Source Path Address Sequence error is reported, see section 7.6.6.
•After the first non zero byte in the packet any following zeros shall be treated as an error. A source path address sequence is reported, see section 7.6.6.
The table below gives some examples of how to set the source path address length and packet address fields for the required path addresses
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Source Path Address |
| RMAP Source Path Address fields | Reply Path Address | ||||||
Length |
| (FirstÆLast Transmitted) |
| (FirstÆLast Reply) |
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0 |
| None |
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| None | |
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1 |
| [00 | 00 00 | 20] |
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| 20 |
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1 |
| [00 | 02 08 | 09] |
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| 02 08 09 |
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1 |
| [01 | 02 03 | 04] |
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| 01 02 03 04 |
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2 |
| [00 | 00 00 | 00] | [00 | 00 00 | 02] | 02 |
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2 |
| [00 | 00 00 | 00] | [01 | 02 03 | 02] | 01 02 03 02 |
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2 |
| [00 | 00 12 | 01] | [02 | B2 03 | 05] | 12 01 02 B2 03 05 | |
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2 |
| [00 | 32 01 | 02] | [07 | 02 05 | 08] | 32 01 02 07 02 05 08 |
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1 |
| [00 | 00 00 | 00] |
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| Invalid | |
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2 |
| [00 | 00 00 | 00] | [00 | 00 00 | 00] | Invalid | |
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1 |
| [00 | 02 00 | 01] |
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| Invalid | |
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1 |
| [00 | A3 00 | 00] |
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| Invalid | |
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2 |
| [00 | 02 03 | 00] | [01 | 00 00 | 00] | Invalid | |
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2 |
| [00 | 00 00 | 02] | [00 | 00 01 | 00] | Invalid | |
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2 |
| [00 | 00 00 | 00] | [02 | 03 00 | 01] | Invalid | |
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| Preliminary |
| 77 |