Renesas RL78 Series User Manual

RL78/F13, F14 CHAPTER 15 SERIAL ARRAY UNIT
R01UH0368EJ0210 Rev.2.10 971
Dec 10, 2015
(1) Register setting
Figure 15-129. Example of Contents of Registers for UART Reception of UART
(UART0, UART1) (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
1 0
SISmn0
0/1 1 0 0
MDmn2
0
MDmn1
1
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
0: Forward (normal) reception
1: Reverse reception
Interrupt source of channel n
0: Transfer end interrupt
(b) Serial mode register mr (SMRmr)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SMRmr
CKSmr
0/1
CCSmr
0 0 0 0 0 0
STSmr
0 0
SISmr0
0 1 0 0
MDmr2
0
MDmr1
1
MDmr0
0/1
Same setting value as CKSmn
bit
Interrupt source of channel r
0: Transfer end interrupt
1: Buffer empty interrupt
(c) 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
0
RXEmn
1
DAPmn
0
CKPmn
0 0 0
PTCmn1
0/1
PTCmn0
0/1
DIRmn
0/1 0
SLCmn1
0
SLCmn0
1
DLSmn3
0/1
DLSmn2
0/1
DLSmn1
0/1
DLSmn0
0/1
Setting of parity bit
00B: No parity
Selection of data transfer sequence
0: Inputs/outputs data with MSB first
1: Inputs/outputs data with LSB first.
Setting of data length
0110B: 7 bits
0111B: 8 bits
1000B: 9 bits
1111B: 10 bits
01B: No parity judgment
10B: Appending Even parity
11B: Appending Odd parity
(d) 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: SDRmnL)
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
SDRmn
Receive data register
Caution For the UART reception, be sure to set the SMRmr register of channel r that is to be paired with
channel n.
Remarks 1. m: Unit number (m = 0, 1), n: Channel number (n = 1), mn = 01, 11
r: Channel number (r = n − 1), q: UART number (q = 0, 1)
2. : Setting is fixed in the UART 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
SDRmnL

Renesas RL78 Series Specifications

General

Brand	Renesas
Model	RL78 Series
Category	Computer Hardware
Language	English