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RL78/G1A CHAPTER 12 SERIAL ARRAY UNIT
R01UH0305EJ0200 Rev.2.00 475
Jul 04, 2013
(4) Processing flow (in continuous transmission mode)
Figure 12-54. Timing Chart of Slave Transmission (in Continuous Transmission Mode)
(Type 1: DAPmn = 0, CKPmn = 0)
SSmn
SEmn
SDRmn
SCKp pin
SOp pin
INTCSIp
TSFmn
BFFmn
MDmn0
STmn
Shift
register mn
Transmit data 1
Transmit data 2 Transmit data 3
Transmit data 3Transmit data 2
Transmit data 1
Shift operation
Shift operation Shift operation
Data transmission Data transmission Data transmission
<1>
<6>
<2> <2> <2><3> <3> <3>
<4>
<5>
(Note)
Note If transmit data is written to the SDRmn register while the BFFmn bit of serial status register mn (SSRmn) is
1 (valid data is stored in serial data register mn (SDRmn)), the transmit data is overwritten.
Caution The MDmn0 bit of serial mode register mn (SMRmn) can be rewritten even during operation.
However, rewrite it before transfer of the last bit is started.
Remark m: Unit number (m = 0, 1), n: Channel number (n = 0 to 3), p: CSI number (p = 00, 01, 10, 11, 20, 21),
mn = 00 to 03, 10, 11
<R>
<R>