m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 267

• Manufacturer Part Number: m37905
• Description: Mitsubishi 16-bit Single-chip Microcomputer 7700 Family / 7900 Series
• Manufacturer: Renesas Electronics Corporation.

SERIAL I/O
11.2 Block description
Fig. 11.2.7 Block diagram of receiver
Fig. 11.2.8 Structure of UARTi receive buffer register
11-12
11.2.5 UARTi receive register and UARTi receive buffer register
Figure 11.2.7 shows the block diagram of the receiver; Figure 11.2.8 shows the structure of UARTi receive
buffer register.
RxD
UART0 receive buffer register (Addresses
UART1 receive buffer register (Addresses
UART2 receive buffer register (Addresses
SP : Stop bit
PAR : Parity bit
15 to 9
8 to 0
Bit
i
Receive data is read out from here.
The value is “0” at reading.
SP
2SP
1SP
0
SP
0
PAR
0
Parity
enabled
Parity
disabled
0
7905 Group User’s Manual Rev.1.0
Clock sync.
0
UART
37
3F
B7
0
16
16
16
Function
, 36
, 3E
, B6
0
Data bus (even)
Data bus (odd)
9-bit UART
16
16
16
)
7-bit UART
8-bit UART
Clock sync.
)
)
D
(b15)
8
b7
8-bit UART
9-bit UART
Clock sync.
D
7-bit UART
7
D
6
D
5
UARTi receive register
D
4
(b8)
b0
D
3
b7
D
2
D
1
Undefined
D
At reset
0
0
UARTi receive
buffer register
R/W
RO
—
b0