OEM638 Technical Specifications
Appendix E
OEM6 Family Installation and Operation User Manual Rev 12
177
73 HSUSB0_VBUS
USB
Input
-
-
Used by the card to monitor activity on
the USB0 interface. This pin cannot
supply current to hosted devices but
must be connected for normal
operation.
75 HSUSB2_VBUS
USB
Input
-
-
Used by the card to monitor activity on
the USB2 interface. This pin cannot
supply current to hosted devices but
must be connected for normal
operation.
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 ASP-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.