Atmel SpaceWire Router SpW-10X - Manual (Page 77)

Ref.: UoD_SpW-10X_
UserManual
Issue: 3.4
SpW-10X
SpaceWire Router
User Manual Date: 11 th
July 2008
Preliminary
77
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
Table 7-18 Source Path Address Reference Table
Source Path Address
Length
RMAP Source Path Address fields
(First ÆLast Transmitted)
Reply Path Address
(First ÆLast Reply)
0 None None
1 [00 00 00 20] 20
1
[00 02 08 09] 02 08 09
1 [01 02 03 04] 01 02 03 04
2 [00 00 00 00] [00 00 00 02] 02
2 [00 00 00 00] [01 02 03 02] 01 02 03 02
2 [00 00 12 01] [02 B2 03 05] 12 01 02 B2 03 05
2 [00 32 01 02] [07 02 05 08] 32 01 02 07 02 05 08
1 [00 00 00 00] Invalid
2 [00 00 00 00] [00 00 00 00] Invalid
1 [00 02 00 01] Invalid
1 [00 A3 00 00] Invalid
2
[00 02 03 00] [01 00 00 00] Invalid
2 [00 00 00 02] [00 00 01 00] Invalid
2 [00 00 00 00] [02 03 00 01] Invalid