Quectel EG915U-EU - Functional Diagram

LTE Standard Module Series
EG915U-EU_Hardware_Design 15 / 81
2.3. Functional Diagram
The following figure shows a block diagram of the module and illustrates the major functional parts.
⚫ Power management
⚫ Baseband
⚫ Radio frequency
⚫ Peripheral interface
Baseband
PMIC
Transceiver
PA
PAM
ANT_MAIN
VBAT_RF
PWRKEY
ADCs
VDD_EXT 2x(U)SIM PCM UARTsI2C
Control
Duplex
Tx
PRx
STATUS
RESET_N
SAW
ANT_BT/WIFI_SCAN
26 MHz
DCXO
SPI Nor Flash (64Mb)
PSRAM (128Mb)
MIC
32 kHz Clock
USB SPI
SPK
Control
VBAT_BB
Figure 1: EG915U-EU Functional Diagram
2.4. Pin Assignment