LTE Standard Module Series
EG91 Series Hardware Design
EG91_Series_Hardware_Design 19 / 106
3.
3)
Within extended temperature range, the module remains the ability to establish and maintain a
voice, SMS, data transmission, emergency call*, etc. There is no unrecoverable malfunction. There
are also no effects on radio spectrum and no harm to radio network. Only one or more parameters
like P
out
might reduce in their value and exceed the specified tolerances. When the temperature
returns to normal operation temperature levels, the module will meet 3GPP specifications again.
4. “*” means under development.
2.3. Functional Diagram
The following figure shows a block diagram of EG91 series module and illustrates the major functional
parts.
Power management
Baseband
DDR+NAND flash
Radio frequency
Peripheral interfaces
Baseband
PMIC
Transceiver
NAND
DDR2
SDRAM
PA
PAM
Switch
ANT_MAIN ANT_DIV
VBAT_BB
VBAT_RF
PWRKEY
VDD_EXT
USB PCM UARTI2C
RESET_N
19.2M
XO
STATUS
GPIOs
Control
IQ Control
Duplexer
SAW
Tx
PRx DRx
(U)SIM2
SPI
(U)SIM1
SAW
LNA
ANT_GNSS
1)
SAW
GPS
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