Product Info

LTE-A Module Series
EM121R-GL Hardware Design
EM121R-GL Hardware Design 18 / 80
2.3. Functional Diagram
The following figure shows a functional diagram of EM121R-GL.
⚫ Power management
⚫ Baseband
⚫ LPDDR4X SDRAM + NAND Flash
⚫ Radio frequency
⚫ M.2 Key-B interface
(U)SIM2
(U)SIM1
USB 2.0 & USB 3.0
PCIe 2.0 × 1
ANT_GNSS
ANT_MAIN
38.4MHz XO
Qlink
Control
Tx
PRx
DRx
PCI Express M.2 Key-B Interface
FULL_CARD_POWER_OFF#
W_DISABLE2#
WWAN_LED#
WAKE_ON_WAN#
RFFE
W_DISABLE1#
GPIOs
ANT_DIV
GND
RESET#
VCC
SPMI
BB_CLK 19.2MHz RF_CLK 38.4MHz
EBI1
EBI2
PMIC
4Gb 8 bit NAND Flash
2Gb 16 bit LPDDR4X SDRAM
Baseband
Transceiver
Tx/Rx Blocks
ET
GNSS
Figure 1: Functional Diagram