Section 15 Serial Communication Interface with FIFO (SCIF)
Rev. 0.50 May 18, 2006 Page 754 of 1588
REJ09B0313-0050
(1) Transmit/Receive
Formats
The data length is fixed at eight bits. No parity bit can be added.
(2) Clock
An internal clock generated by the on-chip baud rate generator by the setting of the C/A bit in
SCSMR and CKE[1:0] in SCSCR, or an external clock input from the SCK pin can be selected as
the SCIF transmit/receive clock.
When the SCIF operates on an internal clock, it outputs the clock signal at the SCK pin. Eight
clock pulses are output per transmitted or received character. When the SCIF is not transmitting or
receiving, the clock signal remains in the high state. When only receiving, the clock signal outputs
while the RE bit of SCSCR is 1 and the number of data in receive FIFO is more than the receive
FIFO data trigger number.
(3) Transmitting
and Receiving Data
•
SCIF Initialization (Clock Synchronous Mode)
Before transmitting, receiving, or changing the mode or communication format, the software
must clear the TE and RE bits to 0 in the serial control register (SCSCR), then initialize the
SCIF. Clearing TE to 0 initializes the transmit shift register (SCTSR). Clearing RE to 0,
however, does not initialize the RDF, PER, FER, and ORER flags and receive data register
(SCRDR), which retain their previous contents.
Содержание Single-Chip Microcomputer SH7203
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Страница 1226: ...Section 23 USB 2 0 Host Function Module USB Rev 0 50 May 18 2006 Page 1196 of 1588 REJ09B0313 0050 ...
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Страница 1512: ...Section 30 List of Registers Rev 0 50 May 18 2006 Page 1482 of 1588 REJ09B0313 0050 ...
Страница 1598: ...Section 31 Electrical Characteristics Rev 0 50 May 18 2006 Page 1568 of 1588 REJ09B0313 0050 ...
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