Kontron PB-SIO4 - Manual (Page 14)

PB-SIO4 Introduction
ID 19957, Rev. 0300 Page 1 - 4 ® PEP Modular Computers GmbH
Figure 1-1: PB-SIO4 Board Front View (Optoisolated Version)
1.3 Functional Block Diagram
Figure 1-2: Functional Block Diagram of the PB-SIO4
ISOLATION
OPTO-
Transceiver
Transceiver
DUART DUART
I/F
Logic
B3
B1
B
6
B
5
B
2
B
4
S
T
1
S
T
2
1 2
2
5
2
6
1 2
2
9
3
0
S
T
2
S
T
1
DUART
DUART
I/F LOGIC
O
P
T
O
IS
O
L
A
T
IO
N
*
T
R
A
N
S
C
E
IV
E
R
* Optoisolation is optional