Usb_Boot Interface - Quectel BG95 Series Hardware Design

Table 20: Default Behaviors of RI
State Response
Idle RI keeps in high level.
URC RI outputs 120ms low pulse when new URC returns.
The default RI behaviors can be configured flexibly by AT+QCFG="urc/ri/ring" command. For more
details about AT+QCFG*, please refer to document [2].
NOTES
1. URC can be outputted from UART port, USB AT port and USB modem port, through configuration via
AT+QURCCFG command. The default port is USB AT port.
2. "*" means under development.

3.15. USB_BOOT Interface

BG95 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 21: Pin Definition of USB_BOOT Interface
Pin Name Pin No.
USB_BOOT 75
The following figure shows a reference circuit of USB_BOOT interface.
BG95_Hardware_Design
I/O Description
Force the module to enter into
DI
emergency download mode
LPWA Module Series
BG95 Hardware Design
Comment
1.8V power domain.
Active high.
If unused, keep it open.
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