R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 122

• Manufacturer Part Number: R5F21133DFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY/R8C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

R8C/13 Group
Rev.1.20
REJ09B0111-0120
Figure 13.3 U0TB and U1TB Registers, U0RB and U1RB Registers, and U0BRG and U1BRG Registers
( b 1 5 )
NOTES:
b 7
1. Write to this register while serial interface is neither transmitting nor receiving.
2. Use MOV instruction to write to this register.
3. After setting the CLK0 to CLK1 bits of the UiC0 register, write to the UiBRG register.
U A R T i t r a n s m i t b u f f e r r e g i s t e r
U A R T i r e c e i v e b u f f e r r e g i s t e r ( i = 0 , 1 )
b7
UARTi bit rate register
b 7
(b15)
N O T E S :
1 . W h e n t r a n s f e r d a t a l e n g t h i s 9 - b i t l o n g , w r i t e h i g h - b y t e f i r s t t h e n l o w - b y t e .
2 . U s e M O V i n s t r u c t i o n t o w r i t e t o t h i s r e g i s t e r .
N O T E S :
1 . R e a d t h e U i R B r e g i s t e r i n 1 6 - b i t u n i t .
2 . A l l o f t h e S U M , P E R , F E R a n d O E R b i t s a r e s e t t o “ 0 ” ( n o e r r o r ) w h e n t h e S M D 2 t o S M D 0 b i t s i n t h e U i M R r e g i s t e r a r e s e t t o “ 0 0 0
Jan 27, 2006
d i s a b l e d ) o r t h e R E b i t i n t h e U i C 1 r e g i s t e r i s s e t t o “ 0 ” ( r e c e p t i o n d i s a b l e d ) . T h e S U M b i t i s s e t t o “ 0 ” ( n o e r r o r ) w h e n a l l o f t h e P E R , F E R a n d O E R
b i t s a r e s e t t o “ 0 ” ( n o e r r o r ) .
T h e P E R a n d F E R b i t s a r e s e t t o “ 0 ” e v e n w h e n t h e h i g h e r b y t e o f t h e U i R B r e g i s t e r i s r e a d .
( b 8 )
( b 8 )
b 0
b0
b 0
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b7
b7
( 1 , 2 , 3 )
(i=0, 1)
(1)
(1, 2)
( i = 0 , 1 )
( b 1 5 - b 9 )
(b11-b9)
s y m b o l
( b 8 - b 0 )
symbol
( b 7 - b 0 )
Assuming that set value = n, UiBRG divides the count source
by n + 1
O E R
FER
PER
SUM
( b 8 )
B i t
Bit
b 0
b0
O v e r r u n e r r o r f l a g
F r a m i n g e r r o r f l a g
Parity error flag
Error sum flag
N o t h i n g i s a s s i g n e d .
W h e n w r i t e , s e t t o “ 0 ” . W h e n r e a d , i t s c o n t e n t i s i n d e t e r m i n a t e .
T r a n s m i t d a t a
N o t h i n g i s a s s i g n e d .
W h e n w r i t e , s e t t o “ 0 ” . W h e n r e a d , i t s c o n t e n t i s i n d e t e r m i n a t e .
Symbol
S y m b o l
U0TB
U1TB
U 0 B R G
U 1 B R G
S y m b o l
U 0 R B
U 1 R B
B i t n a m e
(2)
(2)
00AB
00A3
(2 )
(2 )
0 0 A F
Function
0 0 A 7
Address
A d d r e s s
A d d r e s s
0 0 A 1
0 0 A 9
16
16
1 6
1 6
-00A2
-00AA
- 0 0 A 6
- 0 0 A E
1 6
1 6
0 : N o o v e r r u n e r r o r
1 : O v e r r u n e r r o r f o u n d
Receive data (D
Receive data (D
0 : N o f r a m i n g e r r o r
1 : F r a m i n g e r r o r f o u n d
0 : No parity error
1 : Parity error found
0 : No error
1 : Error found
16
16
1 6
1 6
Function
Indeterminate
Indeterminate
I n d e t e r m i n a t e
I n d e t e r m i n a t e
I n d e t e r m i n a t e
I n d e t e r m i n a t e
After reset
A f t e r r e s e t
A f t e r r e s e t
7
8
)
to D
0
)
Function
Setting range
00
16
to FF
13. Serial Interface
2
” ( s e r i a l I / O
16
R W
W O
R O
RW
RO
RO
RO
RO
R O
RW
WO