OEM6 Family Installation and Operation User Manual Rev 7
108
Figure 45: Top-view, P1101 Main Connector 20-Pin Header
Pin
Signal
Type
Description
Comments
1
LNA_PWR
PWR
Antenna power input
An LDO regulates the output voltage to
around 5 VDC ±10%. The input voltage
can be up to 12 VDC
2
3V3
PWR
Supply voltage input
3.3 V ±5%
3
USB_D-
IO
USB data (-)
One-half of a differential pair (pins 3 and
4). Match lengths and route as a 90
Ω
differential pair if USB is required
4
USB_D+ /
RXD3
a
IO
USB data (+) / COM3 receive
data
One-half of a differential pair (pins 3 and
4). Match lengths and route as a 90
Ω
differential pair if USB is required
This pin is internally multiplexed (see
5
/RESETIN
I
Reset input
Active low reset
6
USERVARF /
CAN1RX
IO
Variable frequency output /
CAN1 receive data
These pins are internally multiplexed (see
7
EVENT2 /
CAN1TX
IO
Event 2 Input / CAN1 transmit
data
8
CAN2RX
I
CAN2 receive data
9
EVENT1 /
TXD3
a
IO
Event1 input / COM3 transmit
data
This pin is internally multiplexed (see
10
GND
PWR
Signal and power ground
11
TXD1
O
COM1 transmit data
12
RXD1
I
COM1 receive data
13
GND
PWR
Signal and power ground
14
TXD2
O
COM2 transmit data
15
RXD2
I
COM2 receive data
16
GND
PWR
Signal and power ground
17
PV
O
Position valid indicator
Active high output
18
GND
PWR
Signal and power ground
19
PPS
b
O
Timemark output,
synchronous to GPS time
This pin has an internal 50 ohm line driver.
Route as a 50
Ω
single-ended trace
20
CAN2TX
O
CAN2 transmit data
a. The COM3 UART can be configured with firmware on pins 4 and 9.
b. The terms TIMEMARK and PPS are synonymous.
