Asynchronous Serial Interface (Uart0 To Uart3); Configuration - NEC Renesas V850/SC1 User Manual

11.6 Asynchronous Serial Interface (UART0 to UART3)

UARTn (n = 0 to 3) has the following two operation modes.
(1) Operation stop mode
In this mode, serial transfers are not performed, thus enabling a reduction in power consumption.
(2) Asynchronous serial interface mode
This mode enables full-duplex operation in which one byte of data after the start bit is transmitted and received.
The on-chip dedicated UARTn baud rate generator enables communications using a wide range of selectable
baud rates. In addition, a baud rate based on divided-clock input to the ASCKn pin can also be defined.
The UARTn baud rate generator can also be used to generate a MIDI-standard baud rate (31.25 Kbps).

11.6.1 Configuration

The UARTn includes the following hardware.
Item
Registers
Control registers
434
CHAPTER 11 SERIAL INTERFACE FUNCTION
Table 11-12. Configuration of UARTn
Transmit shift registers 0 to 3 (TXS0 to TXS3)
Receive buffer registers 0 to 3 (RXB0 to RXB3)
Asynchronous serial interface mode registers 0 to 3 (ASIM0 to ASIM3)
Asynchronous serial interface status registers 0 to 3 (ASIS0 to ASIS3)
Baud rate generator control registers 0 to 3 (BRGC0 to BRGC3)
Baud rate generator mode control registers 00 to 03 (BRGMC00 to BRGMC03)
Baud rate generator mode control registers 10 to 13 (BRGMC10 to BRGMC13)
User's Manual U15109EJ3V0UD
Configuration