Table of Contents
Advertisement
The figure of each register configuration describes its functions and attributes as follows :
www.DataSheet4U.com
*1
Blank: Set to "0" or "1" according to intended use
0:
Set to "0"
1:
Set to "1"
X:
Nothing is assigned
*2
R:
Read
O.....Possible to read
X.....Impossible to read
–.....Nothing is assigned
W:
Write
O.....Possible to write
X.....Written value is invalid
–.....Nothing is assigned
*3
Terms to use here are explained as follows.
• Nothing is assigned
Nothing is assigned to the bit concerned. When write, set "0" for new function in
future plan.
• Must not be set
Not select. The operation at having selected is not guaranteed.
• Reserved bit
Reserved bit. Set the specified value.
• Function varies with each operation mode
Bit function changes according to the mode of peripheral functions.
• Always set to "0" in A mode.
Set the corresponding bit to "0" in A mode.
• Invalid in A mode
The bit concerned has no function in A mode. Set the specified value.
• Valid when bit A="0"
When bit A is "1", the bit concerned has no function. When bit A is "0", the bit concerned has function.
X X X r e g i s t e r
b 7
b 6
b 5
b 4
b 3
b 2
b 1
b 0
S y m b o l
X X X
0
B i t s y m b o l
X X X 0
X X X 1
N o t h i n g i s a s s i g n e d .
I n a n a t t e m p t t o w r i t e t o t h i s b i t , w r i t e " 0 " . T h e v a l u e , i f r e a d , t u r n s o u t t o b e i n d e t e r m i n a t e .
R e s e r v e d b i t
X X X 4
X X X 5
X X X 6
X X X 7
When write, value can be "0" or "1"
*1
A d d r e s s
W h e n r e s e t
X X X
0 0
1 6
B i t n a m e
b 1 b 0
X X X s e l e c t b i t
0 0 : X X X
0 1 : X X X
1 0 : M u s t n o t b e s e t
1 1 : X X X
M u s t a l w a y s b e s e t t o " 0 "
F u n c t i o n v a r i e s w i t h e a c h o p e r a t i o n m o d e
X X X f l a g
*2
F u n c t i o n
R
W
*3
Advertisement
Table of Contents
