Renesas M16C/64A Series User Manual page 6

3. Registers
The following illustration describes registers used throughout this manual.
Example Register
b7 b6 b5 b4 b3 b2 b1
0 1
Notes:
1. Blank box: Set this bit to 0 or 1 according to the function.
0: Set this bit to 0.
1: Set this bit to 1.
X: Nothing is assigned to this bit.
2. RW: Read and write
RO: Read only
WO: Write only (the read value is undefined)
: Not applicable
—
3. Reserved bit: This bit field is reserved. Set this bit to a specified value. For RW bits, the written value is
read unless otherwise noted.
4.
No register bit(s): No register bit(s) is/are assigned to this field. If necessary, set to 0 for possible future
implementation.
Do not use this combination: Proper operation is not guaranteed when this value is set.
Functions vary with operating modes: Functions vary with peripheral operating modes. Refer to register
illustrations of the respective mode.
See Note 1
b0
Symbol
EXAMPLE
Bit Symbol
AAAA0
Example bit 0
AAAA1
— No register bit. If necessary, set this bit to 0. The read value is
(b2) undefined.
—
Reserved
(b3)
—
Reserved
(b4)
AAAA5
Example bit 1
AAAA6
AAAA7 Example flag
Address
9999h
Bit Name
b2 b1
0 0 : XX function
0 1 : YY function
1 0 : Do not set this value.
1 1 : ZZ function
Set this bit to 1.
Set this bit to 0. The read value is
undefined.
Functions vary with operating modes
0: Example detected
1: Example not detected
Reset Value
000X 1X00b
Description RW
RW
RW
—
RW
RW
WO
WO
RO
See Note 2
See Note 3
See Note 4