APPENDIX D OEM7720 Technical Specifications
OEM7 Installation and Operation User Manual v4
210
Pin
Signal
Name
Signal
Type
Signal
Direction
V
IL
Max
(V)
V
IH
Min
(V)
V
OL
Max
(V)
V
OH
Min
(V)
Drive
(mA)
Description
51
UID
3.3V
CMOS
Input
-
-
-
-
-
USB Port Mode Select.
Leave this pin floating
to put USB0 into Device
mode and USB1 into
Host mode.
Tie this pin to GND to
put USB0 into Host
mode and USB1 into
Device mode.
Internal 10 kΩ pull up
52
USB0_
VBUS
Power
I/O
3.3
5.25
-
-
-
When the USB port
mode is set to Host, this
pin is an output.
When the USB port
mode is set to Device,
this pin is an input.
Host or Device mode is
set using the USB_Port_
Mode_Select pin (Pin
51).
When an input, requires
a voltage between 3.3 V
and 5.25 V.
When an output,
provides 5 V for hosted
devices
USB0_VBUS is capable
of providing up to 200
mA to a hosted USB
device. Devices that
require more than 200
mA must be powered
separately.