RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT
R01UH0368EJ0210 Rev.2.10 995
Dec 10, 2015
(1) Register setting
Figure 15-143. Example of Contents of Registers for Address Field Transmission of Simplified I
2
C
(IIC00, IIC01, IIC10, IIC11) (1/2)
(a) Serial mode register mn (SMRmn)
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
Operation clock (fMCK) of channel n
0: Prescaler output clock CKm0 set by the SPSm register
1: Prescaler output clock CKm1 set by the SPSm register
Operation mode of channel n
0: Transfer end interrupt
(b) Serial communication operation setting register mn (SCRmn)
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
Setting of parity bit
00B: No parity
Setting of stop bit
01B: Appending 1 bit (ACK)
(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
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 (address + R/W)
(d) Serial output register m (SOm)
··· Sets only the bits of the target channel.
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
CKOm0
0/1
0
0
0
0
0
0
SOm1
0/1
SOm0
0/1
Start condition is generated by manipulating the SOmn bit.
(e) Serial output enable register m (SOEm)
··· Sets only the bits of the target channel.
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
SOEmn = 0 until the start condition is generated, and SOEmn =
1 after generation.
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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