LTE Module Series
EG21-G Hardware Design
EG21-G_Hardware_Design 15 / 100
Baseband
PMIC
Transceiver
NAND
DDR2
SDRAM
PA
PAM
LNA
Switch
ANT_MAIN ANT_DIVANT_GNSS
VBAT_BB
VBAT_RF
APT
PWRKEY
ADCs
VDD_EXT
USB (U)SIM PCM UARTsI2C
RESET_N
19.2M
XO
STATUS
GPIOs
SAW
Control
IQ Control
Duplex
SAW
Tx
PRx DRx
SD
Figure 1: Functional Diagram
“*” means under development.
2.4. Evaluation Board
In order to help customers develop applications with EG21-G, Quectel supplies an evaluation board
(EVB), USB to RS-232 converter cable, earphone, antenna and other peripherals to control or test the
module.
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