OEM638 Technical Specifications
Appendix E
OEM6 Family Installation and Operation User Manual Rev 12
175
Figure 90: J4101 Expansion Header Pin-Out and Signal Description (odd numbered pins)
Pin
Signal Name
Signal Type
Signal
Direction
Polarity
Drive
Strength
(mA)
Description
1
GND
-
-
3
TXD4
3.3V CMOS Output
-
2
COM4 UART Signaling (3.3 V CMOS
logic)
5
RXD4
3.3V CMOS Input
-
-
COM4 UART Signaling (3.3 V CMOS
logic)
7
RTS4
3.3V CMOS Output
-
2
COM4 UART Signaling (3.3 V CMOS
logic)
9
CTS4
3.3V CMOS Input
-
-
COM4 UART Signaling (3.3 V CMOS
logic)
11 CAN1+
CAN
IO
-
-
CAN1+ Differential Signal
13 CAN1-
CAN
IO
-
-
CAN1- Differential Signal
15 CAN2+
CAN
IO
-
-
CAN2+ Differential Signal
17 CAN2-
CAN
IO
-
-
CAN2- Differential Signal
19 GND
-
-
21 SPI1_nCS0
3.3V CMOS Output
Active
Low
2
Serial Peripheral Interface #1, Chip
Select 0.
23 SPI1_SCLK
3.3V CMOS Output
-
2
Serial Peripheral Interface #1, Serial
Clock.
25 SPI1_MOSI
3.3V CMOS Output
-
2
Serial Peripheral Interface #1, Master
Out / Slave In
27 SPI1_MISO
3.3V CMOS Input
-
-
Serial Peripheral Interface #1, Master
In / Slave Out
29 SPI1_nCS1
3.3V CMOS Output
Active
Low
2
Serial Peripheral Interface #1, Chip
Select 1.
