NEC 78K0R/KE3 User Manual page 414

(4) Processing flow (in continuous transmission/reception mode)
Figure 11-68. Timing Chart of Slave Transmission/Reception (in Continuous Transmission/Reception Mode)
SS0n
ST0n
SE0n
SDR0n
Transmit data 1
Write
SCKp pin
SIp pin
Shift
register 0n
SOp pin
INTCSIp
Data transmission/reception (8-bit length)
MD0n0
TSF0n
BFF0n
<1> <2> <3>
(Note 1)
Notes 1. When transmit data is written to the SDR0n register while BFF0n = 1, the transmit data is
overwritten.
2. The transmit data can be read by reading the SDR0n register during this period. At this time, the
transfer operation is not affected.
Caution The MD0n0 bit can be rewritten even during operation.
However, rewrite it before transfer of the last bit is started, so that it will be rewritten before
the transfer end interrupt of the last transmit data.
Remarks 1. <1> to <8> in the figure correspond to <1> to <8> in Figure 11-69
Transmission/Reception (in Continuous Transmission/Reception Mode).
2. n: Channel number (n = 0, 2), p: CSI number (p = 00, 10)
414
CHAPTER 11 SERIAL ARRAY UNIT
(Type 1: DAP0n = 0, CKP0n = 0)
Transmit data 2
Receive data 1
Write
Receive data 1
Reception & shift operation
Transmit data 1
Data transmission/reception (8-bit length)
<2>
<3>
(Note 2)
User's Manual U17854EJ9V0UD
Transmit data 3
Write
Read
Receive data 2
Reception & shift operation
Transmit data 2
Data transmission/reception (8-bit length)
<4> <2> <3>
(Note 2)
Receive data 3
Receive data 2
Read
Read
Receive data 3
Reception & shift operation
Transmit data 3
<4> <5> <6> <7><8>
Flowchart of Slave