R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 128

• 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 13.7 Transfer Clock Polarity
Figure 13.8 Transfer Format
13.1.1 Polarity Select Function
13.1.2 LSB First/MSB First Select Function
Figure 13.7 shows the polarity of the transfer clock. Use the CKPOL bit in the U0C0 register to select
the transfer clock polarity.
Figure 13.8 shows the transfer format. Use the UFORM bit in the U0C0 register to select the transfer
format.
Jan 27, 2006
( 1 ) W h e n U 0 C 0 r e g i s t e r U F O R M b i t = 0 ( L S B f i r s t )
( 2 ) W h e n U 0 C 0 r e g i s t e r U F O R M b i t = 1 ( M S B f i r s t )
NOTES:
( 1 ) W h e n t h e U 0 C 0 r e g i s t e r C K P O L b i t = 0 ( t r a n s m i t d a t a o u t p u t a t t h e
R
R
N O T E S :
C L K
T
C L K
T
C L K
T
R
C L K
T
R
( 2 ) W h e n t h e U 0 C 0 r e g i s t e r C K P O L b i t = 1 ( t r a n s m i t d a t a o u t p u t a t t h e
1. When not transferring, the CLK0 pin outputs a high signal.
2. When not transferring, the CLK0 pin outputs a low signal.
X
X
X
X
X
X
X
X
D
D
D
D
D
D
D
D
1 . T h i s a p p l i e s t o t h e c a s e w h e r e t h e C K P O L b i t i n t h e U 0 C 0 r e g i s t e r
e d g e a n d t h e r e c e i v e d a t a t a k e n i n a t t h e r i s i n g e d g e o f t h e t r a n s f e r
e d g e a n d t h e r e c e i v e d a t a t a k e n i n a t t h e f a l l i n g e d g e o f t h e t r a n s f e
0
0
0
0
0
0
0
0
0
0
0
0
( 1 )
( 2 )
i s s e t t o “ 0 ” ( t r a n s m i t d a t a o u t p u t a t t h e f a l l i n g e d g e a n d t h e r e c e i v e
d a t a t a k e n i n a t t h e r i s i n g e d g e o f t h e t r a n s f e r c l o c k ) .
page 117 of 205
D 0
D
D
D
D 0
D
D
D
0
7
7
0
0
0
D
D
D
D
D
D
D
D
1
1
6
6
1
1
1
1
D
D
D
D
D
D
D
D
2
5
2
5
2
2
2
2
D
D
D
D
D
D
D
D
3
3
4
4
3
3
3
3
D
D
D
D
4
4
3
3
D
D
D
D
4
4
4
4
D
D
D
D
5
5
2
2
D
D
D
D
5
5
5
5
D
D
D
D
6
6
1
1
D
D
D
D
6
6
6
6
D
D
D
D
7
0
7
0
13.1 Clock Synchronous Serial I/O Mode
D
D
D
D
7
7
7
7