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Chapter 17
Clocked Serial Interface (CSIB)
Preliminary User’s Manual U17566EE1V2UM00
(3)
CBnCTL2 - CSIBn control register 2
CBnCTL2 is an 8-bit register that controls the number of CSIBn serial transfer
bits.
Access
This register can be read/written in 8-bit units.
Address
<base> + 2
H
Initial Value
00
H
. This register is cleared by any reset.
Caution
The CBnCTL2 register can be rewritten only when the
CBnCTL0.CBnPWR bit = 0 or when both the CBnTXE and CBnRXE bits = 0.
Note
If the number of transfer bits is other than 8 or 16, prepare and use data stuffed
from the LSB of the CBnTX and CBnRX registers.
7
6
5
4
3
2
1
0
0
0
0
0
CBnCL3
CBnCL2
CBnCL1
CBnCL0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 17-6
CBnCTL2 register contents
Bit position
Bit name
Function
3 to 0
CBnCL[3:0]
Number of serial transfer bits
CBnCL3
CBnCL2
CBnCL1
CBnCL0 Number of serial transfer bits
0
0
0
0
8 bits
0
0
0
1
9 bits
0
0
1
0
10 bits
0
0
1
1
11 bits
0
1
0
0
12 bits
0
1
0
1
13 bits
0
1
1
0
14 bits
0
1
1
1
15 bits
1
x
x
x
16 bits
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