HD6417618 datasheet(397/646 Pages) RENESAS

397 / 646 page

Section 14 Serial Communication Interface with FIFO (SCIF)

Rev. 6.00 Jun. 12, 2007 Page 365 of 610

REJ09B0131-0600

Transmit/Receive Formats: Table 14.10 lists the eight communication formats that can be

selected in asynchronous mode. The format is selected by settings in the serial mode register

(SCSMR).

Table 14.10 Serial Communication Formats (Asynchronous Mode)

SCSMR Bits

Serial Transmit/Receive Format and Frame Length

CHR

PE STOP

START

8-bit data

STOP

START

8-bit data

STOP STOP

START

8-bit data

STOP

START

8-bit data

STOP STOP

START

7-bit data

STOP

START

7-bit data

STOP STOP

START

7-bit data

STOP

START

7-bit data

STOP STOP

[Legend]

START: Start bit

STOP: Stop bit

Parity bit

Clock: An internal clock generated by the on-chip baud rate generator or an external clock input

from the SCK pin can be selected as the SCIF transmit/receive clock. The clock source is selected

by the C/

A bit in the serial mode register (SCSMR) and bits CKE1 and CKE0 in the serial control

When an external clock is input at the SCK pin, it must have a frequency equal to 16 times the

desired bit rate.

When the SCIF operates on an internal clock, it can output a clock signal at the SCK pin. The

frequency of this output clock is equal to 16 times the desired bit rate.

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