OEM6 Family Installation and Operation User Manual Rev 7
159
Table 37: J4101 Expansion Header Pinout and Signal Description (even numbered pins)
77
HSUSB2_VBUS_EN 3.3V CMOS Output
Active
High
3
Control for an external 5 V power
switch for USB2.
79
H
USB
IO
-
-
The differential data pair for
USB2.
81
HSUSB2_D-
USB
IO
-
-
83
Reserved
85
Reserved
87
3V3_nWIDE_SEL
3.3V CMOS Input
-
-
Select the active power supply. If
low, will enable the wide-range
converter. If high, the card will
operate from the 3.3 V supply
input.
89
GND
-
-
91
GND
-
-
93 3V3_EXT
3.3V
Supply
Input
-
-
These pins may connect to an
external 3.3 V power supply.
If the 3V3_EXT supply is used,
do not connect a supply to
4V5_36V_INPUT.
95
3V3_EXT
-
-
97
3V3_EXT
-
-
99
3V3_EXT
-
-
Pin
Signal Name
Signal Type
Signal
Direction Polarity
Drive
Strength
(mA)
Description
The expansion connector on the OEM638 card is a Samtec BSH-050-01-L-D-A-TR. It
mates with Samtec A
SP-166000-01
(this is a semi-custom part from Samtec that provides
a mated height of 14 mm). The standard mating height for the OEM638 card is 14 mm.
Pin
Signal Name
Signal Type
Signal
Direction Polarity
Drive
Strength
(mA)
Description
2
IMUTXD / RS232 /
RS422
Output
-
-
IMUTXD: RS232 Flow Control
(±25 V tolerant)
: RS422 Signaling (2 V
differential typical)
This is a standard RS232/RS422
communication port but is able to
generate a time event and
timestamp for reverse
compatibility with the SPAN-
MPPC card stack.
4
IMURTS / IMUTXD-
RS232 /
RS422
Output
-
-
IMURTS: RS232 Flow Control
(±25 V tolerant)
IMURXD-: RS422 Signaling (2 V
differential typical)
6
IMURXD / RS232 /
RS422
Input
-
-
IMURXD: RS232 Flow Control
(±25 V tolerant)
: RS422 Signaling (2
V differential typical)
