LPWA Module Series
BG96 Hardware Design
BG96_Hardware_Design 44 / 79
Table 19:
Default
Behaviors of RI
The default RI behaviors can be configured flexibly by
AT+QCFG=“urc/ri/ring”
command. For more
details, please refer to
document [2]
.
3.15. USB_BOOT Interface
BG96 provides a USB_BOOT pin. During development or factory production, USB_BOOT can force the
module to boot from USB port for firmware upgrade.
Table 20: Pin Definition of USB_BOOT Interface
The following figure shows a reference circuit of USB_BOOT interface.
Module
USB_BOOT
VDD_EXT
10K
Test point
TVS
Close to test point
Figure 21: Reference Circuit of USB_BOOT Interface
State
Response
Idle
RI keeps in high level.
URC
RI outputs 120ms low pulse when a new URC is reported.
Pin Name
Pin No.
I/O
Description
Comment
USB_BOOT
75
DI
Force the module to enter
emergency download mode
1.8V power domain.
Active high.
If unused, keep it open.
