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Ref.:   UoD_SpW-10X_ 
UserManual
 
Issue:  3.4 
  
 
 
SpW-10X 
SpaceWire Router 
User Manual 
Date:  11
th
 July 2008 
 
 
Preliminary 
113
 
 
Table 9-6 SpaceWire Port Control/Status Register Fields. 
Bits Name 
Reset 
Value 
Description 
Read/Write
0 
Error active 
‘0’ 
The error active bit is set when 
one of the error bits are set. 
R 
1 Packet 
address error 
‘0’ 
The packet address error bit is 
set when a packet is received 
with an incorrect address. 
R 
2 Output 
port 
timeout error 
‘0’ 
The output timeout error bit set 
when the output port has 
become blocked for a period of 
time. 
R 
3 Disconnect 
error 
‘0’ 
The disconnect error bit is set 
when a disconnect error occurs 
on the SpaceWire link 
R 
4 
Parity error 
‘0’ 
The parity error bit is set when a 
parity error occurs on the 
SpaceWire link 
R 
5 
Escape error 
‘0’ 
The escape error bit is set when 
an escape error occurs on the 
SpaceWire link 
R 
6 
Credit error 
‘0’ 
The credit error bit is set when a 
credit error occurs on the 
SpaceWire link 
R 
7 Character 
sequence 
error 
‘0’ 
The character sequence error bit 
is set when a character 
sequence error occurs on the 
SpaceWire link 
R 
10:8 
Interface state  “000” 
The interface state bits indicate 
the state of the interface state 
machine in the SpaceWire link. 
“000” = Error Reset 
“001” = Error Wait 
“010” = Ready 
“011” = Started 
“100” = Connecting 
“101” = Run 
R 
11 
Running 
‘0’ 
The running bit is set when the 
SpaceWire interface state 
machine is in the Run state. 
R 
12 AutoStart  ‘1’ 
When 
set the SpaceWire link will 
autostart as defined in the 
SpaceWire standard [AD1]: the 
R/W