SH7080 Datasheet, PDF (900/1644 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperH™ RISC engine Family

Section 16 Serial Communication Interface with FIFO (SCIF)
16.4.3 Clock Synchronous Mode
In clock synchronous mode, the SCIF transmits and receives data in synchronization with clock
pulses. This mode is suitable for high-speed serial communication.
The SCIF transmitter and receiver are independent, so full-duplex communication is possible
while sharing the same clock. The transmitter and receiver are also 16-byte FIFO buffered, so
continuous transmitting or receiving is possible by reading or writing data while transmitting or
receiving is in progress.
Figure 16.11 shows the general format in clock synchronous serial communication.
*
Synchronization
clock
Serial data
One unit of transfer data (character or frame)
*
LSB
MSB
Bit 0 Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7
Don't care
Note: * High except in continuous transfer
Don't care
Figure 16.11 Data Format in Clock Synchronous Communication
Rev. 3.00 May 17, 2007 Page 842 of 1582
REJ09B0181-0300