CC2430 Datasheet, PDF (150/234 Pages) Texas Instruments – A True System-on-Chip solution for 2.4 GHz IEEE 802.15.4 / ZigBee-TM

CC2430
interrupt enables and flags are
summarized below.
Interrupt enables:
• USART0 RX : IEN0.URX0IE
• USART1 RX : IEN0.URX1IE
• USART0 TX : IEN2.UTX0IE
• USART1 TX : IEN2.UTX1IE
Interrupt flags:
• USART0 RX : TCON.URX0IF
• USART1 RX : TCON.URX1IF
• USART0 TX : IRCON2.UTX0IF
• USART1 TX : IRCON2.UTX1IF
13.13.7 USART DMA Triggers
There are two DMA triggers associated
with each USART. The DMA triggers are
activated by RX complete and TX
complete events i.e. the same events as
the USART interrupt requests. A DMA
channel can be configured using a USART
Receive/transmit buffer, UxDBUF, as
source or destination address.
Refer to Table 37 on page 92 for an
overview of the DMA triggers.
13.13.8 USART Registers
The registers for the USART are described
in this section. For each USART there are
five registers consisting of the following (x
refers to USART number i.e. 0 or 1):
• UxCSR USART x Control and Status
• UxUCR USART x UART Control
• UxGCR USART x Generic Control
• UxDBUF USART x Receive/Transmit
data buffer
• UxBAUD USART x Baud Rate Control
CC2430 PRELIMINARY Data Sheet (rev. 1.03) SWRS036A
Page 150 of 232