12.6.3 UART Data Flow Control Enable Parameter

The UART data flow control enable parameter enables the use of the RTS and CTS signals to provide UART data flow control. For more details, refer to the BM70/71 Bluetooth® Low Energy Module User’s Guide (DS50002542). The user can enable this parameter to enable the RTS and CTS signals on the respective GPIO pins. For more details, refer to General Purpose I/O (GPIO) Configuration.
Note: This parameter only works when the IS187x device is set up for Auto Operation mode. If the IS187x device is in Manual Operation mode, disable this parameter or the undefined device operation occurs.
Table 12-19. Device Active Indication Enable Parameter Options
ParameterValueParameter DescriptionLength
Bit 0System option 3 Bit[0]
  • 0 – Disabled, CTS/RTS function OFF
  • 1 – Enable, CTS/RTS function ON
1 bit

Operational Mode

This system option 3 parameter can affect the behavior in Manual or Auto Operation mode. The programming of the parameter affects the behavior.