Evaluation Board
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7.3.5
Extension interface (X304)
The extension interface (X304) of the NRPEB H90-RE is used only for
connecting to external modules of type NXHX-RS232 (Hilscher part number
7923.100)..
At a given time, only one of the interfaces X304 (Pin header) and X308
(DSub connector) can be used.
Using the extension interface X304 requires switch S600-B to be closed
meaning UART over X304 is active and UART over DSub is deactivated.
See section
The connector of this interface of the NRPEB H90-RE is a male pin header
with 2 rows of 5 pins each.
The following table explains the meaning of the various pins:
X304
Pin
Signal
Pin
Signal
1
AIF_U0_TXD
2
AIF_U0_RXD
3
AIF_U0_RTS
(currently n.c.)
4
AIF_U0_CTS
(currently n.c.)
5
GND
6
n.c.
7
n.c.
8
n.c.
9
n.c.
10
n.c.
Table 31: Extension interface (X304)
NXHX-RS232 module
1
2
3
4
5
6
7
8
9
10
X
3
0
4
NXHX-
RS
Male Connector
GND
+3V3
AIF_U0_TXD
AIF_U0_RTS
AIF_U0_RXD
AIF_U0_CTS
Figure 35: Extension interface NXHX-RS232
netRAPID 90 | Design guide
DOC190601DG01EN | Revision 1 (Draft 10) | English | 2019-09 | Preliminary | Public
© Hilscher 2019