Renesas RL78/F13 User Manual

RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT
R01UH0368EJ0210 Rev.2.10 946
Dec 10, 2015
(1) Register setting
Figure 15-112. Example of Contents of Registers for Slave Transmission/Reception of SPI Function
(CSI00, CSI01, CSI10, CSI11) (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
1 0 0 0 0 0
STSmn
0 0
SISmn0
0 1 0 0
MDmn2
0
MDmn1
0
MDmn0
0/1
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
Interrupt source of channel n
0: Transfer end interrupt
1: Buffer empty 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
1
DAPmn
0/1
CKPmn
0/1 0 0
PTCmn1
0
PTCmn0
0
DIRmn
0/1 0
SLCmn1
0
SLCmn0
0
DLSmn3
0/1
DLSmn2
0/1
DLSmn1
0/1
DLSmn0
0/1
Selection of data transfer sequence
0: Inputs/outputs data with MSB first
1: Inputs/outputs data with LSB first.
Selection of the data and clock
phase (For details about the
setting, see
15.3 Registers
Controlling Serial Array Unit
.)
Setting of data length
(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 0000000
(baud rate setting)
0
0 0 0 0 0 0 0 0
(2) When operation is in progress (SEmn = 1) (Lower 8 bits: SDRpL)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SDRmn
Transmit data setting/receive data register
(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
×
CKOm0
× 0 0 0 0 0 0
SOm1
0/1
SOm0
0/1
Caution Be sure to set transmit data to the SDRpL register before the clock from the master is started.
Remarks 1. m: Unit number (m = 0, 1), n: Channel number (n = 0, 1), p: CSI number (p = 00, 01, 10, 11),
mn = 00, 01, 10, 11
2. : Setting is fixed in the CSI slave transmission/reception 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
SDRpL

Renesas RL78/F13 Specifications

General

Brand	Renesas
Model	RL78/F13
Category	Computer Hardware
Language	English