User's Manual

24 DRAFT P440 Data Sheet / User Guide
4 Electrical Interfaces
This section provides a detailed description of the various P440 electrical interfaces. A standard P440
has the following connections:
 Two antenna ports
 Communications via Low Speed Serial, USB 2.0, Ethernet, CAN, SPI
 Connections for up to 15 GPIO pins
 Connections for power (4.5 to 48V), Ground, and Chassis Ground
There are also five indicator LEDs, three on the board and two on the RJ45 jack.
The physical interface to Communications, GPIO, and Power are through a mix of connectors (see
Figure 14) including the following:
 Three mezzanine connectors
 One locking connector
 One Ethernet RJ45 connector
 Two USB connectors (one power-only, one for data-only)
 One 0.1” DIP header
This arrangement provides the user with a great deal of flexibility. However, some users may prefer
a reduced set of interfaces. In this case, it is possible to no-load undesired components. Doing so
saves a bit of cost and minimizes the board footprint. (Such configurations are possible but not
standard and should only be considered for large volume applications of >1000 units. For further
details, contact Time Domain directly at [e-mail].) For standard optional
configurations see Section 10 – Configuration and Ordering Information.
Fig. 14: Top and Bottom assembly drawing of the P440 highlighting key interfaces
Top Side
Bottom Side
Chassis
Ground
J11- Locking
Ethernet Jack
with Kit
IP Address/Node Label
J10- User Mezzanine
J13- USB Power
J5- USB Data
J8- Ethernet Mezzanine
J6- Factory Mezzanine
J7 – User
Serial Header
J4 - Reserved
Header
Port A Port B
UWB LEDs
FPGA LED
Ethernet
LEDs