18.9 Control Register Details
Address
0x4100
UART_ST
UART Status Register
0x4101
UART_TXD
UART Transmit Data Register
0x4102
UART_RXD
UART Receive Data Register
0x4103
UART_MOD
UART Mode Register
0x4104
UART_CTL
UART Control Register
0x4105
UART_EXP
UART Expansion Register
The UART registers are described in detail below. These are 8-bit registers.
Note: When data is written to the registers, the "Reserved" bits must always be written as 0 and not 1.
S1C17001 TECHNICAL MANUAL
Table 18.9.1: UART register list
Register name
EPSON
Function
Transfer, buffer, error status display
Transmission data
Received data
Transfer data format setting
Data transfer control
IrDA mode setting
18 UART
223