Functiona L Diagram - Quectel EC25 series User Manual

2.4. Fun ctional D Diagram
The followin ng figure sho
 Power managemen
 Baseba and
 DDR+N NAND flash
 Radio f frequency
Periphe eral interface

VBAT_RF
VBAT_BB
PWRKEY Y
RESET_N
ADCs
STATUS
ows a block diagram of
nt
e
PA
APT
Tx
PMIC
Control
19.2M
XO
V VDD_EXT
Figure 1:
E EC25-A_Us ser_ManualC
EC25 and il llustrates the
ANT_MAIN N ANT_G
Switch
SA
Duplex x
LN
A
PRx
Transce
IQ Q
M
USB USIM
Functiona l Diagram
Confidentia al / Release
EC25-AU
e major func ctional parts
GNSS ANT_DIV A
Switch
AW
NA
SAW
D DRx
eiver
Con ntrol
B Baseband d
P PCM I2C C UART
d 12 / 6 69
LTE Module L e
ser Manua al
.
NAND
DDR2
SDRAM S
GPIOs