Quectel BG95 Series, Проектирование аппаратного обеспечения

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LPWA Module Series
BG95 Hardware Design
BG95_Hardware_Design 24 / 80
never be pulled down
to GND permanently.
Reset
Pin Name Pin No. I/O Description DC Characteristics Comment
RESET_N
2)
17 DI
Reset the
module
V
IL
max=0.45V
RESET_N will be
supported in the next
hardware design
version.
Status Indication
Pin Name Pin No. I/O Description DC Characteristics Comment
STATUS 20 DO
Indicate the
module’s
operation
status
V
OH
min=1.35V
V
OL
max=0.45V
1.8V power domain.
If unused, keep this
pin open.
NETLIGHT 21 DO
Indicate the
module’s
network activity
status
V
OH
min=1.35V
V
OL
max=0.45V
1.8V power domain.
If unused, keep this
pin open.
USB Interface
Pin Name Pin No. I/O Description DC Characteristics Comment
USB_VBUS 8 PI USB detection
Vmax=5.25V
Vmin=3.0V
Vnorm=5.0V
USB_DP 9 IO
USB differential
data bus (+) Compliant with USB
2.0 standard
specification.
Require differential
impedance of 90
Ω .
USB_DM 10 IO
USB differential
data bus (-)
(U)SIM Interface
Pin Name Pin No. I/O Description DC Characteristics Comment
USIM_
PRESENCE*
42 DI
(U)SIM card
insertion
detection
V
IL
min=-0.3V
V
IL
max=0.6V
V
IH
min=1.2V
V
IH
max=2.0V
1.8V power domain.
If unused, keep this
pin open.
USIM_VDD 43 PO
Power supply
for (U)SIM card Vmax=1.9V
Vmin=1.7V
Only 1.8V (U)SIM
card is supported.
USIM_RST 44 DO Reset signal of V
OL
max=0.45V