m37905 Renesas Electronics Corporation., m37905 Datasheet - Page 446

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

UART0 transmit/receive mode register (Address
UART1 transmit/receive mode register (Address
UART2 transmit/receive mode register (Address
Note: Bits 4 to 6 are invalid in the clock synchronous serial I/O mode. (Each may be either “0” or “1.”) Additionally, fix bit 7 to “0.”
UART0 baud rate register (BRG0) (Address
UART1 baud rate register (BRG1) (Address
UART2 baud rate register (BRG2) (Address
Note: Writing to this register must be performed while the transmission/reception halts.
UART0 transmit buffer register (Addresses
UART1 transmit buffer register (Addresses
UART2 transmit buffer register (Addresses
Note: Use the MOVM (MOVMB) or STA (STAB, STAD) instruction for writing to this register.
15 to 9
7 to 0
8 to 0
Bit
Bit
Bit
0
1
2
3
4
5
6
7
Use the MOVM (MOVMB) or STA (STAB, STAD) instruction for writing to this register.
Serial I/O mode select bits
Internal/External clock select bit
Stop bit length select bit
(Valid in UART mode)
Odd/Even parity select bit
(Valid in UART mode when parity
enable bit = “1.”)
Parity enable bit
(Valid in UART mode)
Sleep select bit
(Valid in UART mode)
Any value in the range from “00
Assuming that the set value = n, BRGi divides the count source frequency by (n + 1).
Transmit data is set.
Nothing is assigned.
Bit name
(Note)
(Note)
(Note)
(Note)
16
” to “FF
7905 Group User’s Manual Rev.1.0
b2 b1 b0
0 0 0 : Serial I/O is invalid.
0 0 1 : Clock synchronous serial I/O mode
0 1 0 :
0 1 1 :
1 0 0 : UART mode (Transfer data length = 7 bits)
1 0 1 : UART mode (Transfer data length = 8 bits)
1 1 0 : UART mode (Transfer data length = 9 bits)
1 1 1 : Do not select.
0 : Odd parity
1 : Even parity
0 : Internal clock
1 : External clock
0 : One stop bit
1 : Two stop bits
0 : Parity disabled
1 : Parity enabled
0 : Sleep mode terminated (Invalid)
1 : Sleep mode selected
33
3B
B3
Function
Function
16
16
16
31
39
B1
, 32
16
, 3A
, B2
(P1 and P8 function as programmable I/O ports.)
16
16
” can be set.
16
)
)
)
16
Do not select.
30
38
B0
16
16
)
)
)
(b15)
16
16
16
b7
)
)
)
Function
Appendix 2. Control registers
(b8)
b0
b7 b6 b5 b4 b3 b2 b1 b0
b7
b7
Undefined
Undefined
Undefined
At reset
At reset
At reset
0
0
0
0
0
0
0
0
APPENDIX
R/W
R/W
R/W
RW
RW
RW
RW
RW
RW
RW
RW
WO
WO
–
b0
b0
Reference
Reference
Reference
11-14
11-11
11-5
20-15