M16C6K7 Datasheet, PDF (124/285 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Rev.1.0
UART2 Special Mode Register
Mitsubishi microcomputers
M16C / 6K7 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
S I/Oi control register (i = 3, 4) (Note 1)
b7 b6 b5 b4 b3 b2 b1 b0
Symbol
Address
When reset
SiC 036216, 036616
4016
Bit
symbol
Bit name
SMi0 Internal synchronous
clock selection bits
SMi1
Description
b1 b0
0 0 : Selecting f1
0 1 : Selecting f8
1 0 : Selecting f32
1 1 : Not to be used
RW
SMi2 SOUTi output disable bit
0 : SOUTi output
1 : SOUTi output disable (high impedance)
SMi3 S I/Oi port selection bit
(Note 2)
0 : Input-output port
1 : SOUTi output, CLK function
Nothing is assigned.
In an attempt to write to this bit, write “0”. The value, if read, turns out to be “0”.
SMi5
SMi6
SMi7
Transfer direction
selection bit lect bit„û
Synchronous clock
selection bit (Note 2)
SOUTi initial value
set bit
0 : LSB first
1 : MSB first
0 : External clock
1 : Internal clock
Effective when SMi3 = 0
0 : L output
1 : H output
Note 1: Set "1" in bit 2 of the protection register (000A16) in advance to write to the
S I/Oi control register (i = 3, 4).
Note 2: When SI/Oi port selection bit (i= 3, 4) is set to "0" as for I/O port, set the
synchronous clock selection bit to "1".
SI/Oi bit rate generator
b7
b0
Symbol
S3BRG
S4BRG
Address
036316
036716
When reset
Indeterminate
Indeterminate
Indeterminate
Assuming that set value = n, BRGi divides the count
source by n + 1
Values that can be set R W
0016 to FF16
SI/Oi transmission/reception register
b7
b0
Symbol
S3TRR
S4TRR
Address
036016
036416
When reset
Indeterminate
Indeterminate
Indeterminate
Transmission/reception starts by writing data to this register.
After transmission/reception finishes, reception data is input.
RW
Fig.GA-29 S I/O3, 4 control registers
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