Hardware Block Diagram - Fibocom L850-GL Series Hardware Manual

2.5 Hardware Block Diagram

The hardware block diagram in Figure 2-2 shows the main hardware functions of L850 module, including
baseband and RF functions.
Baseband contains the followings:
UMTS/LTE TDD/LTE FDD controller

PMU

NAND/internal LPDDR2 RAM

Application interface

RF contains the followings:
RF Transceiver

RF Power/PA

RF Front end

RF Filter

Antenna Connector

+3.3V
FULL_CARD_POWER_OFF#
RESET#
PCIe
USB2.0
USB 3.0
USIM
EINT
WOWWAN#
LED
I2S
I2C
CLOCK
Tunable ANT
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FIBOCOM L850-GL Series Hardware Guide
PMU
NAND
LPDDR2
RAM
Baseband
(UMTS/LTE TDD/LTE FDD controller)
Figure 2-2 Hardware block diagram
Main RX
RF
TX
Transceiver 2nd
Div RX
TCXO
Main RX
RF
Transceiver 1st
TX
Div RX
RF Part
Main LB
Duplexer
FEMiD
SAW
Main MB
FEMiD
PA
PA DCDC
Div
LB FEM
Div
SAW
MB FEM
GNSS/
Beidou
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Main ANT
Div ANT