User's Manual

LTE Module Series
BG96 Hardware Design
BG96_Hardware_Design Confidential / Released 45 / 71
3.15. Behaviors of RI
AT+QCFG=“risignaltype”,“physical” command can be used to configure RI behavior.
No matter on which port URC is presented, URC will trigger the behavior of RI pin.
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.
The default behaviors of RI are shown as below.
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. AT+QCFG
command is still under development. For more details, please refer to document [2].
3.16. USB_BOOT Interface
BG96 provides a USB_BOOT pin. During development or factory production, USB_BOOT pin can force
the module to boot from USB port for firmware upgrade.
Table 21: Pin Definition of USB_BOOT Interface
Pin Name
Pin No.
I/O
Description
Comment
USB_BOOT
75
DI
Force the module to boot from USB
port
1.8V power domain.
Active high.
If unused, keep it open.
NOTE