Hitachi H8/3048 Hardware Manual page 806

TDR—Transmit Data Register
www.DataSheet4U.com
Bit
Initial value
Read/Write
7 6 5
1 1 1
R/W R/W R/W
H'B3
4 3 2
1 1 1
R/W R/W R/W
Serial transmit data
799
SCI0
1 0
1 1
R/W R/W