Atmel SpaceWire Router SpW-10X Benutzerhandbuch

Ref.:   UoD_SpW-10X_ 

 

Issue:  3.4 

  

 

Date:  11

 

 

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 

ÆLast Transmitted) 

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