Section 15
Serial Communication Interface with FIFO (SCIF)
Rev. 0.50 May 18, 2006 Page 739 of 1588
REJ09B0313-0050
15.4 Operation
15.4.1 Overview
For serial communication, the SCIF has an asynchronous mode in which characters are
synchronized individually, and a clock synchronous mode in which communication is
synchronized with clock pulses.
The SCIF has a 16-stage FIFO buffer for both transmission and receptions, reducing the overhead
of the CPU, and enabling continuous high-speed communication. Furthermore, channel 3 has
RTS
and
CTS
signals to be used as modem control signals.
The transmission format is selected in the serial mode register (SCSMR), as shown in table 15.9.
The SCIF clock source is selected by the combination of the CKE1 and CKE0 bits in the serial
control register (SCSCR), as shown in table 15.10.
(1) Asynchronous
Mode
•
Data length is selectable: 7 or 8 bits
•
Parity bit is selectable. So is the stop bit length (1 or 2 bits). The combination of the preceding
selections constitutes the communication format and character length.
•
In receiving, it is possible to detect framing errors, parity errors, receive FIFO data full,
overrun errors, receive data ready, and breaks.
•
The number of stored data bytes is indicated for both the transmit and receive FIFO registers.
•
An internal or external clock can be selected as the SCIF clock source.
When an internal clock is selected, the SCIF operates using the clock of on-chip baud rate
generator.
When an external clock is selected, the external clock input must have a frequency 16 or 8
times the bit rate. (The on-chip baud rate generator is not used.)
Summary of Contents for Single-Chip Microcomputer SH7203
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Page 52: ...Section 1 Overview Rev 0 50 May 18 2006 Page 22 of 1588 REJ09B0313 0050 ...
Page 98: ...Section 2 CPU Rev 0 50 May 18 2006 Page 68 of 1588 REJ09B0313 0050 ...
Page 128: ...Section 4 Clock Pulse Generator CPG Rev 0 50 May 18 2006 Page 98 of 1588 REJ09B0313 0050 ...
Page 200: ...Section 6 Interrupt Controller INTC Rev 0 50 May 18 2006 Page 170 of 1588 REJ09B0313 0050 ...
Page 242: ...Section 8 Cache Rev 0 50 May 18 2006 Page 212 of 1588 REJ09B0313 0050 ...
Page 400: ...Section 9 Bus State Controller BSC Rev 0 50 May 18 2006 Page 370 of 1588 REJ09B0313 0050 ...
Page 696: ...Section 13 Watchdog Timer WDT Rev 0 50 May 18 2006 Page 666 of 1588 REJ09B0313 0050 ...
Page 726: ...Section 14 Realtime Clock RTC Rev 0 50 May 18 2006 Page 696 of 1588 REJ09B0313 0050 ...
Page 876: ...Section 17 I2 C Bus Interface 3 IIC3 Rev 0 50 May 18 2006 Page 846 of 1588 REJ09B0313 0050 ...
Page 1054: ...Section 21 D A Converter DAC Rev 0 50 May 18 2006 Page 1024 of 1588 REJ09B0313 0050 ...
Page 1294: ...Section 24 LCD Controller LCDC Rev 0 50 May 18 2006 Page 1264 of 1588 REJ09B0313 0050 ...
Page 1386: ...Section 26 I O Ports Rev 0 50 May 18 2006 Page 1356 of 1588 REJ09B0313 0050 ...
Page 1512: ...Section 30 List of Registers Rev 0 50 May 18 2006 Page 1482 of 1588 REJ09B0313 0050 ...
Page 1598: ...Section 31 Electrical Characteristics Rev 0 50 May 18 2006 Page 1568 of 1588 REJ09B0313 0050 ...
Page 1606: ...Appendix Rev 0 50 May 18 2006 Page 1576 of 1588 REJ09B0313 0050 ...
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