Embedded Solutions
Page 38
Loop
-
back
The Engineering kit includes reference software, utilizing external loop-back tests.
The test set-up included PcieBiSerialDb37BA22 and loop-back plug. The Pin numbers
are for the interconnections on the Loop-back plug. The IO names can be used to
accommodate a different set-up. The loop-back plug is a DB37 connector with the
interconnections protected with a connector shell. Twisted Pair wiring is used. For
short cables Cat5e can be used.
Signal
From
To
Signal
1
5
TxPSync-
2
6
RxPSync-
T
20
24
R
TxPDataU-
21
25
RxPDataU-
T
3
7
R
TxPDataL-
4
8
RxPDataL-
22
26
TxPClk-
23
27
RxPClk-
Figure 24 PcieBiSerialDb37BA22 Loop-Back wiring diagram