UMTS/HSPA Module Series
UG95 Hardware Design
UG95_Hardware_Design Confidential / Released 20 / 72
USIM_PRES
ENCE
42
DI
USIM card input
detection.
V
IL
max=0.35V
V
IH
min=1.3V
V
IH
max=1.85V
1.8V power domain.
External pull-up
resistor is required.
Main UART Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RI
39
DO Ring indicator
V
OL
max=0.25V
V
OH
min=1.55V
1.8V power domain.
If unused, keep this
pin open.
DCD
38
DO
Data carrier
detection
V
OL
max=0.25V
V
OH
min=1.55V
1.8V power domain.
If unused, keep this
pin open.
CTS
36
DO Clear to send
V
OL
max=0.25V
V
OH
min=1.55V
1.8V power domain.
If unused, keep this
pin open.
RTS
37
DI
Request to send
V
IL
max=0.35V
V
IH
min=1.3V
V
IH
max=1.85V
1.8V power domain.
If unused, keep this
pin open.
DTR
30
DI
Data terminal ready
V
IL
max=0.35V
V
IH
min=1.3V
V
IH
max=1.85V
1.8V power domain.
If unused, keep this
pin open.
TXD
35
DO Transmit data
V
OL
max=0.25V
V
OH
min=1.55V
1.8V power domain.
If unused, keep this
pin open.
RXD
34
DI
Receive data
V
IL
max=0.35V
V
IH
min=1.3V
V
IH
max=1.85V
1.8V power domain.
If unused, keep this
pin open.
RF Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
RF_ANT
60
IO
RF antenna
50
Ω impedance
PCM Interface
Pin Name
Pin No.
I/O
Description
DC Characteristics
Comment
PCM_IN
6
DI
PCM data input
V
IL
min=-0.3V
V
IL
max=0.35V
V
IH
min=1.3V
V
IH
max=1.85V
1.8V power domain.
If unused, keep this
pin open.
PCM_OUT
7
DO PCM data output
V
OL
max=0.25V
V
OH
min=1.55V
1.8V power domain.
If unused, keep this
pin open.
Quectel
Confidential