4Links Diagnostic SpaceWire Interface DSI-RG408, User Manual

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Diagnostic SpaceWire Interface
EtherSpaceLink family User Manual
3 . S pecific a tion
3 .1. S p a ce W ire Links
Th e DS I ’ s S pac e Wir e l i n k s c on f o r m to EC SS -E- S T- 50 - 12 C ( 31s t Jul y 2 00 8 ).
3 .1.1. S p a ce W ire Recei v e Perform a nce
R e c e i ve s p ee ds m ay be i n t h e ra n g e fr om 1 . 2 M b/ s to mo r e t ha n 4 00 M b/ s (t h e lo w e r l i m i t i s s et b y t h e
S
pac
e
Wir
e
d i s c
onne
c
t t
i
meout
,
nom
i
n
a
ll
y
o
f 8
50 n
s
).
Th
e e
d g
e
s
e
para
t
i
on on t
h
e S
pac
e
Wir
e
s ig
n
a
l
l i ne s mu s t be gr e a te r t ha n 1 . 4 n s .
3 .1. 2 . S p a ce W ire Tr a nsmit Perform a nce
Th
e t
ra
n
s
m
i
t
s p
ee
ds
o
f a
ll o
f
t
h
e l
i
n
k s
on
a
DS
I
un
i
t
ar
e t
h
e
s a
me
,
ex
c
e
p
t
f
o
r
t
h
o
s
e
which ar
e
i
n d
i
v
i
d u
a
ll
y
s et to
EtherSpaceLink_LINK_mode_fixed_speed
, which i
s t
h
e S
pac
e
Wir
e
s
t
a
n
d ar d
l
i
n
k s
t
ar
t
-
u
p s p
ee
d
o
f 1
0
M
b/
s
.
A wi d e ra n g e o f u s e r- s ele c te d t ra n s m i t s p ee ds i s a v ai l a ble fr om 1 M b/ s u p to 4 00 M b/ s , wi t h a n
i
n
cr
ement o
f 1 M
b/
s
o
r
le
ss d
e
p
en
d
ent on t
h
e
s p
ee
d ra
n
g
e
, a s s h
o
w
n
i
n t
h
e
f
ollo
wi
n
g
t
a
ble.
Lower-spee d ( M b/s ) (increment ( M b/s )) Higher-spee d ( M b/s )
4
0.0 (
1
.0)
4
00.0
4 .0 (0. 1 ) 3 9.9
1 .00 (0.0 1 ) 3 .99
3 .1. 3 . S p a ce W ire Connectors
Eigh t s t a n d ar d 9 -way Micr o - m i n ia tu r e D - t yp e S pac e Wir e s o ck et c onne c to r s ar e mounte d e i t h e r on t h e
fr
ont
pa
nel (on
RG har d war
e
p
l
a
t
f
o
r
m
s
) o
r
on t
h
e
r
e
ar pa
nel (on
RG - R p
l
a
t
f
o
r
m
s
).
Th e c onne c to r s ar e l a belle d 1 to 8 , fr om le f t to righ t , c o rr e s p on d i n g to s o f t war e a n d A P I p o r t s 1 to 8
r
e
s p
e
c
t
i
vel
y
.
Th
e
pi
nout o
f
t
h
e S
pac
e
Wir
e
s
o
ck
et
c
onne
c
to
r s
(loo
ki
n
g fr
om t
h
e out
s i d
e o
f
t
h
e
E
t
h
e
r
S
pac
eL
i
n
k
un
i
t)
i s s h
o
w
n
i
n
fig
u
r
e
3
.
1:
5
4
3
2
1 Din+
Sin+
Inner shield
Sout−
Dout−
9
8
7
6 Din−
Sin−
Sout+
Dout+
Figure 3 . 1: Spac e W ire c onne c tor p inout
Th
e
f
em
a
le “D
i
n”
a
n
d
“S
i
n”
c
ont
ac
t
s pr
ov
i d
e
i
n
p
ut
s
to t
h
e DS
I
; t
h
e
f
em
a
le “Dout”
a
n
d
“Sout”
c
ont
ac
t
s
carry out p ut s ig n a l s fr om t h e DS I .
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