APPOTECH CW6632B - 8 Universal Asynchronous Receiver;Transmitter (UART); Uart0; Overview; UART0 Special Function Registers

8 Universal Asynchronous Receiver/Transmitter (UART) 71
CW6632B Bluetooth 3.0 Audio Player SOC Version 1.0.0
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8 Universal Asynchronous
Receiver/Transmitter (UART)
8.1 UART0
8.1.1 Overview
UART0 is a serial port capable of asynchronous transmission. The UART0 can function in full duplex mode. Receive
data is buffered in a holding register. This allows the UART0 to start reception of a second incoming data byte before
software has finished reading the previous data byte.
When PSEL = 0
 Receive pin (RX) – UART0RX0
 Transmit pin (TX) – UART0TX0
When PSEL = 1
 Receive pin (RX) – UART0RX1
 Transmit pin (TX) – UART0TX1
8.1.2 UART0 Special Function Registers
Register 8-1 UARTCON – UART0 control
Position
7
6
5
4
3
2
1
0
Name
UTSBS
UTTXNB
NBITEN
UTEN
UTTXINV
UTRXINV
TXIE
RXIE
Default
0
1
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
UTSBS: Stop Bit Select
0 = 1 bit as Stop Bit
1 = 2 bits as Stop Bit
UTTXNB: The ninth bit data of transmitter buffer. Write the ninth bit into this location that you want to transmit
NBITEN: Nine-BIT mode Enable Bit
0 = Eight-bit mode
1 = Nine-bit mode
UTEN: UART Enable Bit
0 = Disable UART module
1 = Enable UART module
UTTXINV: Transmit Invert Selection Bit
0 = Transmitter output without inverted
1 = Transmitter output inverted