Chapter 2 Installation of OEM7 Family Receiver Cards
OEM7 Installation and Operation User Manual v4
44
OEM7700 and OEM7720 Multiplexed Port
A fifth serial port (COM5) is optionally available on the flow control (RTS and CTS) pins of COM2
(pins 5 and 11 of the interface connector).
To enable COM5:
1. Issue the following command:
SERIALCONFIG COM2 115200 N 8 1 N ON
2. Issue the following command:
INTERFACEMODE COM5 NOVATEL NOVATEL ON
Use any interface mode except
NONE
To enable flow control for COM2:
1. Issue the following command:
INTERFACEMODE COM5 NONE NONE OFF
2. Issue the following command:
SERIALCONFIG COM2 115200 N 8 1 CTS ON
2.11.2 USB Ports
OEM7 receivers have USB 2.0 compatible ports. The number of ports, bit rate and modes avail-
able vary depending on the receiver.
Receiver
Number of
Ports
Port Bit
Rate
Mode
USB Signals
OEM719
1
12 Mbps
Device only
Pin 3 D(-) and Pin 4 D(+) on P1701
(main header).
Pin 4 is multiplexed with COM3
OEM729
1
12 Mbps
Device only
Pin 21 D(-) and Pin 22 D(+) of P1802
(24-pin header)
OEM7700
2
480 Mbps
1 Device and 1
Host
USB0: Pin 48 D(+) and Pin 50 D(-) on
P2001
USB1: Pin 47 D(-) and Pin 49 D(+) on
P2001
OEM7720
2
480 Mbps
1 Device and 1
Host
USB0: Pin 48 D(+) and Pin 50 D(-) on
P1901
USB1: Pin 47 D(-) and Pin 49 D(+) on
P1901
Table 5: Available USB Ports
See
OEM719 Technical Specifications
OEM729 Technical Specifications
OEM7700 Technical Specifications
on page 166 and
OEM7720 Technical Specifications
on page 189 for further information on USB specifications and pin assignments.
If the USB port is being routed to a external device, ESD protection is needed. For an example of
a USB interface circuit, see
USB Modes
The USB mode of a port (Device or Host) is set by the state of the UID pin. See
on page 178 and
on page 202 for more
