PAM-7Q - Hardware Integration Manual
UBX-13003143 - R06
Early Production Information
Design
Page 12 of 26
Function
PIN
No
I/O
Description
Remarks
Power
VCC
4
I
Supply Voltage
Provide clean and stable supply.
GND
3
I
Ground
Assure a good
GND
connection to
GND
pin of the module,
preferably with a large ground plane.
V_BCKP
5
I
Backup Supply
Voltage
It is recommended to connect a backup supply voltage to
V_BCKP
in order to enable warm and hot start features on the positioning
modules. Otherwise, connect to
VCC
.
UART
TxD
2
O
Serial Port
Communication interface
RxD
1
I
Serial
Serial input. Internal pull-up resistor to VCC. Leave open if not used.
System
TIMEPULSE
6
O
Time pulse
Signal
Configurable Time pulse signal (one pulse per second by default).
Leave open if not used.
SDA
7
I/O
DDC Data
DDC Data
SCL
8
I
DDC Clock
DDC Clock.
Table 2: Pinout PAM-7Q
3.3
Layout
This section provides important information for designing a robust GNSS system.
GNSS signals at the surface of the Earth are about 15 dB below the thermal noise floor. When defining a GNSS
receiver layout, the placement of the PAM-7Q, as well as grounding, shielding and jamming from other digital
devices, are crucial issues requiring careful consideration.
3.3.1
PCB mounting
The PAM-7Q can be mounted on a customer PCB (“motherboard” in the instructions below) by using standard
2.54 mm pitch 1x8 pin header (for example Samtec TLW-108-06-G-S). Two dummy pads are used to solder the
module metal shield on the motherboard. Reference pad layout is shown in Figure 4.
