User's Manual

LTE Module Series

EC25-V User Manual

EC25-V_User_Manual Confidential / Released 12 /

2.4. Functional Diagram

The following figure shows a block diagram of EC25 and illustrates the major functional parts.

 Power management

 Baseband

 DDR+NAND flash

 Radio frequency

 Peripheral interface

Baseband

PMIC

Transceiver

NAND

DDR2

SDRAM

Switch

LNA

Switch

ANT_MAIN ANT_DIVANT_GNSS

VBAT_BB

VBAT_RF

APT

PWRKEY

ADCs

VDD_EXT USB USIM PCM

UARTI2C

RESET_N

19.2M

STATUS

GPIOs

SAW

Control

IQ Control

Duplex

SAW

PRx DRx

Figure 1: Functional Diagram