HD6433308 HITACHI [Hitachi Semiconductor], HD6433308 Datasheet - Page 194

• Manufacturer Part Number: HD6433308
• Description: Hitachi Single-Chip MicroComputer
• Manufacturer: HITACHI [Hitachi Semiconductor]

9.1.4 Register Configuration
Table 9-2 lists the SCI registers.
Table 9-2. SCI Registers
Name
Receive shift register
Receive data register
Transmit shift register
Transmit data register
Serial mode register
Serial control register
Serial status register
Bit rate register
Notes:
* Software can write a “0” to clear the status flag bits, but cannot write a “1.”
9.2 Register Descriptions
9.2.1 Receive Shift Register (RSR)
Bit
Read/Write
The RSR receives incoming data bits. When one data character (1 byte) has been received, it is
transferred to the receive data register (RDR).
The CPU cannot read or write the RSR directly.
—
7
—
Abbreviation
RSR
RDR
TSR
TDR
SMR
SCR
SSR
BRR
6
—
5
R/W
—
R
—
R/W
R/W
R/W
R/(W)*
R/W
181
—
4
—
3
Initial value
—
H’00
—
H’FF
H’04
H’0C
H’87
H’FF
—
2
—
1
Address
—
H’FFDD
—
H’FFDB
H’FFD8
H’FFDA
H’FFDC
H’FFD9
—
0