Antenna Tuner Control Interfaces - Quectel RG520N-AT Hardware Design

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