RoyalTek REB-1315LPNX - Manual (Page 7)

RoyalTek Confidential 7
REB-1315LPNX Operational Manual
1.5 Application Circuit
Reference schematic:
GPIO-14
L4 39nH/ +/- 0.3nH
V_RTC_3V3
C12
OPEN
GPS_BOOT
C13
0.1uF/X5R/16V
5V or 3.3V
GPS_IO15
RXA
GPS_IO14
R2
0 ohm
D302
RB705D
1
3
2
GPS_IO10
SYSTEM_TXB
+3.3V
R3
0 ohm
GPS_IO13
+3.3V
D301
RB705D
1
3
2
SYSTEM_RX
GPIO-15
R1
OPEN(10K)
+ U2
3V 3.3mAH
GPS_IO 1
SYSTEM_TX
GPIO-13
GPS_IO 0
U-FL-R-SMT-3P
50 ohm Trace
C11
OPEN
(Always)
U1
REB-1315
1
2
3
4
5
6
7
8
9
10 11
12
13
14
15
16
17
18
19
20
21 22
RXB
TXB
PPS
TXA
RXA
GPIO-10
GPIO-0
GPIO-1
RF_PWR
ON_OFF V_RTC_3V3
VIN_3V3
GPIO-14
GPIO-15
GPIO-13
BOOT
RF_VOUT
GND
GPS_RF_IN
GND
GND GND
RXA
SYSTEM_RXB
50 ohm Trace
GPS_PPS
R4
470
+3.3V
C14
10uF/Y5V/10V
C10
0.1uF
Please provide
DC 5V or 3.3V
J1
HRS_U.FL
1
2
3
C15
10uF /10V /Y5V