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FIBOCOM NL668-AM Hardware User Manual
Page 18 of 62
Pin
Pin Name
I/O Level
Description
For 3.0V USIM:
Vmax=3.05V
Vmin=2.7V
I
O
max=150mA
15
USIM _DATA
O
For 1.8V USIM:
V
IL
max=0.6V
V
IH
min=1.2V
V
OL
max=0.45V
V
OH
min=1.35V
For 3.0V USIM:
V
IL
max=1.0V
V
IH
min=1.95V
V
OL
max=0.45V
V
OH
min=2.55V
USIM data signal cable
16
USIM _CLK
O
For 1.8V USIM:
V
OL
max=0.45V
V
OH
min=1.35V
For3.0V USIM:
V
OL
max=0.45V
V
OH
min=2.55V
USIM clock signal cable
17
USIM _RST
O
For 1.8V USIM:
V
OL
max=0.45V
V
OH
min=1.35V
For 3.0V USIM:
V
OL
max=0.45V
V
OH
min=2.55V
USIM reset signal cable
18
NC
-
-
NC
19
GND
G
-
Ground
20
RESET_N
I
V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max=0.5V
Module reset signal, active low, no
need pull up externally
21
PWRKEY
I
V
IH
max=2.1V
V
IH
min=1.3V
V
IL
max
=0.5V
Turn on/off the module, active low, no
need pull up externally
22
GND
G
-
Ground
23
SD_INS_DET
I
-
Reserved
24
PCM_IN
I
V
IL
min=-0.3V
PCM input signal
