RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT
R01UH0368EJ0210 Rev.2.10 1001
Dec 10, 2015
(1) Register setting
Figure 15-147. Example of Contents of Registers for Data Transmission of Simplified I
2
C
(IIC00, IIC01, IIC10, IIC11) (1/2)
(a) Serial mode register mn (SMRmn) … Do not manipulate this register during data
transmission/reception.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SMRmn
CKSmn
0/1
CCSmn
0
0
0
0
0
0
STSmn
0
0
SISmn0
0
1
0
0
MDmn2
1
MDmn1
0
MDmn0
0
(b) Serial communication operation setting register mn (SCRmn) … Do not manipulate the bits of this
register, except the TXEmn and
RXEmn bits, during data
transmission/reception.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SCRmn
TXEmn
1
RXEmn
0
DAPmn
0
CKPmn
0
0
0
PTCmn1
0
PTCmn0
0
DIRmn
0
0
SLCmn1
0
SLCmn0
1
DLSmn3
0
DLSmn2
1
DLSmn1
1
DLSmn0
1
(c) Serial data register mn (SDRmn)
(1) When operation is stopped (SEmn = 0)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SDRmn
Baud rate setting
Note 1
0
0
0
0
0
0
0
0
0
(2) When operation is in progress (SEmn = 1) (Lower 8 bits: SDRrL)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SDRmn
Transmit data setting
(d) Serial output register m (SOm) … Do not manipulate this register during data
transmission/reception.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SOm
0
0
0
0
0
0
CKOm1
0/1
Note
2
CKOm0
0/1
Note
2
0
0
0
0
0
0
SOm1
0/1
Note
2
SOm0
0/1
Note
2
(e) Serial output enable register m (SOEm) … Do not manipulate this register during data
transmission/reception.
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SOEm
0
0
0
0
0
0
0
0
0
0
0
0
0
0
SOEm1
0/1
SOEm0
0/1
Notes 1. Setting these bits is unnecessary because they are set for transmission of an address field.
2. The value varies depending on the communication data during communication operation.
Remarks 1. m: Unit number (m = 0, 1), n: Channel number (n = 0, 1), r: IIC number (r = 00, 01, 10, 11),
mn = 00, 01, 10, 11
2. : Setting is fixed in the IIC mode, : Setting disabled (set to the initial value)
×: Bit that cannot be used in this mode (set to the initial value when not used in any mode)
0/1: Set to 0 or 1 depending on the usage of the user
SDRrL
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