upd70f3017ay Renesas Electronics Corporation., upd70f3017ay Datasheet - Page 288

• Manufacturer Part Number: upd70f3017ay
• Description: V850/sa1tm 32-/16-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

(4) Transmission controller
(5) Reception controller
10.4.2 UARTn control registers
(1) Asynchronous serial interface mode registers 0, 1 (ASIM0, ASIM1)
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UARTn uses the following four types of registers for control functions (n = 0, 1).
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The transmission controller controls transmit operations, such as adding a start bit, parity bit, and stop bit to data
that is written to transmit shift register n (TXSn), based on the values set to asynchronous serial interface mode
register n (ASIMn).
The reception controller controls receive operations based on the values set to asynchronous serial interface
mode register n (ASIMn). During a receive operation, it performs error checking, such as for parity errors, and
sets various values to asynchronous serial interface status register n (ASISn) according to the type of error that is
detected.
ASIMn is an 8-bit register that controls the serial transfer operations of UARTn.
ASIMn can be set by an 8-bit or 1-bit memory manipulation instruction.
RESET input sets these registers to 00H.
Asynchronous serial interface mode register n (ASIMn)
Asynchronous serial interface status register n (ASISn)
Baud rate generator control register n (BRGCn)
Baud rate generator mode control registers n and 01 (BRGMCn, BRGMC01)
CHAPTER 10
User’s Manual U12768EJ4V1UD
SERIAL INTERFACE FUNCTION