HD6473837H Datasheet, PDF (490/562 Pages) Renesas Technology Corp – Hardware Manual

SDRU—Serial data register U
H'A2
SCI1
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
SDRU7 SDRU6 SDRU5 SDRU4 SDRU3 SDRU2 SDRU1 SDRU0
Not fixed Not fixed Not fixed Not fixed Not fixed Not fixed Not fixed Not fixed
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Stores transmit and receive data
8-bit transfer mode: Not used
16-bit transfer mode: Upper 8 bits of data
SDRL—Serial data register L
H'A3
SCI1
Bit
Initial value
Read/Write
7
6
5
4
3
2
1
0
SDRL7 SDRL6 SDRL5 SDRL4 SDRL3 SDRL2 SDRL1 SDRL0
Not fixed Not fixed Not fixed Not fixed Not fixed Not fixed Not fixed Not fixed
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
STAR—Start address register
Bit
7
6
—
—
Initial value
1
1
Read/Write
—
—
Stores transmit and receive data
8-bit transfer mode: 8-bit data
16-bit transfer mode: Lower 8 bits of data
H'A4
SCI2
5
4
3
2
1
0
—
STA4 STA3 STA2 STA1 STA0
1
0
0
0
0
0
—
R/W
R/W
R/W
R/W
R/W
Transfer start address in range from
H'FF80 to H'FF9F
473