USARTEx Exported Constants

Modules
	USARTEx FIFO mode
	USART FIFO mode.
	USARTEx RXFIFO threshold level
	USART RXFIFO level.
	USARTEx Slave Select Management
	USARTEx Synchronous Slave mode enable
	USART SLAVE mode.
	USARTEx TXFIFO threshold level
	USART TXFIFO level.
	USARTEx Word Length

Detailed Description