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Chapter 17
Clocked Serial Interface 3 (CSI3)
User’s Manual U16580EE3V1UD00
(7)
Transfer data length select register 3n (CSIL3n)
The CSIL3n register is used to select the transfer data length of CSI3n.
This register can be read or written in 8-bit or 1-bit units.
Reset input clears the register to 00H.
Caution:
The CSIL3n register may be transferring data when the CTXEn or CRXEn bit of the
CSIM3n register is 1. Before writing data to the CSIL3n register, be sure to clear the
CTXEn and CRXEn bits to 0.
Figure 17-8:
Transfer Data Length Select Register 3n (CSIL3n)
Note:
Not available on µPD70F3447
Remarks: 1.
μ
PD70F3187:
n = 0, 1
μ
PD70F3447:
n = 0
2.
m = 0 to 3
After reset:
00H
R/W
Address:
CSIL30 FFFFFD49H,
CSIL31 FFFFFD69H
Note
7
6
5
4
3
2
1
0
CSIL3n
CSLVn3
CSLVn2
CSLVn1
CSLVn0
CCLn3
CCLn2
CCLn1
CCLn0
CSLVnm
Chip Select Output (SCS3nm) Level Setting (n = 0, 1; m = 0 to 3)
0
Active level of SCSnm output is low level
1
Active level of SCSnm output is high level
CCLn3
CCLn2
CCLn1
CCLn0
Transfer Data Length
0
0
0
0
16 bits
1
0
0
0
8 bits
1
0
0
1
9 bits
1
0
1
0
10 bits
1
0
1
1
11 bits
1
1
0
0
12 bits
1
1
0
1
13 bits
1
1
1
0
14 bits
1
1
1
1
15 bits
Other than above
Setting prohibited
Caution:
If a transfer data length other than 16 bits is specified (CCLn3 to CCLn0
bits = 0000), an undefined value is read to the higher excess bits of the
SIRB3n and CSIBUFn registers (see 10.3.5 (3) Data transfer direction
specification function).
Содержание V850E/PH2
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