Atmel SpaceWire Router SpW-10X User Manual

Ref.:   UoD_SpW-10X_ 

 

Issue:  3.4 

  

 

Date:  11

 

 

100

 

R1

1

2

3

4

5

6

(a)

4

5

R2

1

4

2

3

5

6

4

4

 

b)  The packet from routing switch R1 port 3 is routed towards its destination but during packet 

transfer the source node stalls and does not supply any more data or the end of packet. 

R1

1

2

3

4

5

6

(b)

R2

1

4

2

3

5

6

4

4

 

c)  The packet is blocked and the packet waiting at routing switch R1 port 2 cannot be routed. 

The watchdog timers in routing switches R1 and R2 detect the packet has become blocked 
and spills data from the input port and appends an error end of packet to the output port. This 
causes the network path from routing switch R1 port 4 to routing switch R2 port 1 to be 
cleared and the next packet can be routed. 

R1

1

2

3

4

5

6

(c)

R2

1

4

2

3

5

6

4

4

EEP

 

d)  The packet waiting at R1 port 2 can now be routed.  

R1

1

2

3

4

5

6

(d)

R2

1

4

2

3

5

6