APPENDIX B OEM729 Technical Specifications
OEM7 Installation and Operation User Manual v4
163
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
21
USB_D-
Analog
Input/
Output
-
-
-
-
-
USB device signal.
This is one half of the
USB differential pair.
USB_D+ and USB_D-
must be length-
matched and routed as
a 90 Ω differential pair.
22
USB_D+
Analog
Input/
Output
-
-
-
-
-
USB device signal.
This is one half of the
USB differential pair.
USB_D+ and USB_D-
must be length-
matched and routed as
a 90 Ω differential pair.
23
GND
PWR
-
-
-
-
-
-
Ground reference
24
GND
PWR
-
-
-
-
-
-
Ground reference
B.6.2 P1803 Expansion Connector 16-Pin Header
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
1
ETH_
RD-
Analog
Input
-
-
-
-
-
This is one half of the
Ethernet receive
differential pair (100 Ω
pair).
2
ETH_
RD+
Analog
Input
-
-
-
-
-
This is one half of the
Ethernet receive
differential pair (100 Ω
pair).
3
ETH_
BIAS
PWR
-
-
-
-
-
-
Center tap power for
Ethernet magnetics.