MeiG
Product
Manual
of
SLM750
Module
SLM750
Module
Hardware
Design
Page 19, total 84 pages
STATUS
61 OD Indicate
the
module operating
status
Driving current
should be less
than 0.9mA
Require external
pull-up. If unused,
keep it open
NET_MODE
5 OD
Indicate
the
module network
registration status
VOHmin=1.35V
VOLmax=0.45V
1.8V power
domain, require
external pull-up. If
unused, keep it
open
NET_STATU
S
6 OD
Indicate
the
module network
running status
VOHmin=1.35V
VOLmax=0.45V
1.8V power
domain, require
external pull-up. If
unused, keep it
open
USB interface
Pin name
Pin
number
I/O Description
DC
features
Note
USB_VBUS
71 PI
USB
detection
Vmax=5.25V
Vmin=3.0V
Vnorm=5.0V
USB_DP 69
IO
USB
differential
data positive
signal
Compliant with
USB2.0 standard
specification
Require
differential
impedance of 90
Ω
USB_DM 70
IO
USB
differential
data negative
signal
Compliant with
USB2.0 standard
specification
Require
differential
impedance of 90
Ω
USIM card interface
Pin name
Pin
number
I/O
Description
DC features
Note
USIM_DATA 15 IO
USIM
card
data
bus
1.8V USIM:
V
IL
max=0.6V
V
IH
min=1.2V
V
OL
max=0.45V
V
OH
min=1.35V
3.0V USIM:
V
IL
max=1.0V
V
IH
min=1.95V
V
OL
max=0.45V
V
OH
min=2.55V
-
USIM_CLK 16 DO
USIM
card
clock
line
1.8V USIM:
V
OL
max=0.45V
V
OH
min=1.35V
3.0V USIM:
V
OL
max=0.45V
-
