Antenna Tuner Control Interfaces - Quectel LTE-A Series Hardware Design

3.19. Antenna Tuner Control Interfaces*

The module provides two methods to control external antenna tuner: through RFFE signals or GPIO
signals. Customers can choose either one according to their tuner design. The following table lists the pin
definitions of these RFFE and GPIO signals.
Table 27: Pin Definition of RFFE Interface Used to Control Antenna Tuner
Pin Name Pin No.
RFFE_CLK 71
RFFE_DATA 73
VDD_EXT 168
VDD_RF 162
The following figure shows sketch map of MIPI Tuner control:
Table 28: Pin Definition of GPIO Interface Used to Control Antenna Tuner
Pin Name Pin No.
GPIO_3 159
GPIO_4 161
EG18_Hardware_Design
I/O Description
DO
RFFE serial interface used for external
tuner control.
IO
PO Provide 1.8V for external RF Circuit VIO.
PO Provide 2.85V for external RF circuit.
Figure 32: Sketch map of MIPI Tuner control
I/O Description
IO
GPIO interface dedicated for external
tuner control.
IO
LTE-A Module Series
EG18 Hardware Design
Comment
If unused, keep it open.
If unused, keep it open.
If unused, keep it open.
If unused, keep it open.
Comment
If unused, keep it open.
If unused, keep it open.
67 / 104