Datasheet

78K0/Ix2 CHAPTER 16 SERIAL INTERFACE CSI11
R01UH0010EJ0500 Rev.5.00 563
Feb 28, 2012
Figure 16-8. Output Operation of First Bit (2/2)
(c) Type 2: CKP11 = 0, DAP11 = 1
SCK11
SOTB11
SIO11
SO11
Writing to SOTB11 or
reading from SIO11
First bit 2nd bit 3rd bit
Output latch
(d) Type 4: CKP11 = 1, DAP11 = 1
First bit 2nd bit 3rd bit
SCK11
SOTB11
SIO11
Output latch
SO11
Writing to SOTB11 or
reading from SIO11
The first bit is directly latched by the SOTB11 register at the falling edge of the write signal of the SOTB11 register or
the read signal of the SIO11 register, and output from the SO11 pin via an output selector. Then, the value of the
SOTB11 register is transferred to the SIO11 register at the next falling (or rising) edge of SCK11, and shifted one bit.
At the same time, the first bit of the receive data is stored in the SIO11 register via the SI11 pin.
The second and subsequent bits are latched by the SIO11 register to the output latch at the next rising (or falling)
edge of SCK11, and the data is output from the SO11 pin.