Kontron PB-SIO4A - Manual (Page 14)

PB-SIO4A Introduction
ID 19958, Rev. 0300 Page 1 - 4 ® PEP Modular Computers GmbH
This piggyback is fitted with DUART devices (two driver/receiver devices each handling
two of the four serial channels), as well as a GAL device containing the specific interrupt
handling logic and other features such as the I.D. number.
The optoisolated versions have eight optocouplers which are replaced with wire bridges
on the non-optoisolated versions.
For operational configuration of this piggyback there are solder jumpers located both on
the front and rear side of the board.
Figure 1-1: PB-SIO4A Board Front View (Optoisolated Version)
Figure 1-2: PB-SIO4A Board Rear View (Optoisolated Version)
1 2
25 26
S
T
1
0
2
1 2
29 30
S
T
1
0
1
DUART
I/
F
L
o
g
ic
Opto-
isolation
Opto-
isolation
O
p
to
-
is
o
la
ti
o
n
Transmitter
Transmitter
R
e
c
e
iv
e
r
B51
B52
DUART
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
B63 B64
B60
B59
B58
B57
B56
B55
B54
B53
B68
B67
B66
B65
B62 B61
2 1 3
2 1 3
2 1 3
2 1 3