Quectel RG520N-AT - Antenna Tuner Control Interfaces

5G Module Series
RG520N-AT_Hardware_Design 71 / 109
Table 36: Cellular Network Antenna Mapping
5.1.2. Antenna Tuner Control Interfaces*
The module provides two generic RF control interfaces for the control of external antenna tuners.
Table 37: Pin Definition of Antenna Tuner Control Interfaces
Table 38: Logic Levels of Antenna Tuner Control Interfaces
Antenna
LTE
5G NR
LB (MHz)
MHB (MHz)
n77 (MHz)
Refarmed
n77
ANT0
LMB_TRX0,
HB_DRX
LMB_TRX0,
HB_TRX1
TRX0
617–894
1710–2690
3300–4200
ANT1
LMB_PRX
MIMO,
HB_DRX MIMO,
LMB_PRX
MIMO,
HB_DRX MIMO
DRX MIMO
617–894
1710–2690
3300–4200
ANT2
LMB_DRX
MIMO,
HB_PRX MIMO,
LMB_DRX
MIMO,
HB_PRX MIMO
PRX MIMO
617–894
1710–2690
3300–4200
ANT3
LMB_TRX1,
HB_TRX0
LMB_TRX1,
HB_TRX0
TRX1
617–894
1710–2690
3300–4200
1. LTE LMB_TRX1 is activated when 5G NR FDD low/middle bands are supported in NSA mode.
2. TRX0/1 = TX0/1 + PRX/DRX.
Pin Name
Pin No.
I/O
Default Status
Description
Comment
SDR_GRFC0
171
DO
PD
GRFC interfaces
dedicated for external
antenna tuner control
If unused, keep
them open.
SDR_GRFC1
174
DO
PD
Parameter
Min.
Max.
Unit
V
OL
-
0.45
V
V
OH
1.35
-
V
NOTE