upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 267

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

CHAPTER 11 SERIAL INTERFACE CSI10
Figure 11-7. Output Operation of First Bit (2/2)
(c) Type 2: CKP10 = 0, DAP10 = 1
SCK10
Writing to SOTB10 or
reading from SIO10
SOTB10
SIO10
Output latch
First bit
2nd bit
3rd bit
SO10
(d) Type 4: CKP10 = 1, DAP10 = 1
SCK10
Writing to SOTB10 or
reading from SIO10
SOTB10
SIO10
Output latch
SO10
First bit
2nd bit
3rd bit
The first bit is directly latched by the SOTB10 register at the falling edge of the write signal of the SOTB10
register or the read signal of the SIO10 register, and output from the SO10 pin via an output selector. Then, the
value of the SOTB10 register is transferred to the SIO10 register at the next falling (or rising) edge of SCK10, and
shifted one bit. At the same time, the first bit of the receive data is stored in the SIO10 register via the SI10 pin.
The second and subsequent bits are latched by the SIO10 register to the output latch at the next rising (or falling)
edge of SCK10, and the data is output from the SO10 pin.
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Preliminary User’s Manual U19014EJ1V0UD