LPWA Module Series
BG77 Hardware Design
BG77_Hardware_Design 14 / 76
Baseband
PMIC
Transceiver/PA/switch
ANT_MAIN
ANT_GNSS
VBAT
PWRKEY
VDD_EXT USB
(U)SIM
PCM I2C
19.2M
XO
GPIOs
Control
IQ Control
SAW+LNA
GNSS
UARTs
ADC0
STATUS NETLIGHT
RESET_N
ADC1
SPI
PON_TRIG
COUPLER
Figure 1: Functional Diagram
1. PWRKEY output voltage is 1.5V because of the voltage drop inside the Qualcomm chipset. Due to
platform limitations, the chipset has integrated the reset function into PWRKEY. Therefore, PWRKEY
should never be pulled down to GND permanently.
2. RESET_N is multiplexed from PWRKEY.
2.4. Evaluation Board
In order to help customers to develop applications conveniently with BG77, Quectel supplies the
evaluation board (EVB), USB to RS-232 converter cable, USB data cable, earphone, antenna and other
peripherals to control or test the module. For more details, please refer to document [1].
NOTES
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