R5F72115D160FPV datasheet(696/1228 Pages) RENESAS

696 / 1228 page

Section 15 Serial Communication Interface with FIFO (SCIF)

Rev. 2.00 May. 08, 2008 Page 672 of 1200

REJ09B0344-0200

15.3.5

Serial Mode Register (SCSMR)

SCSMR specifies the SCIF serial communication format and selects the clock source for the baud

rate generator.

The CPU can always read and write to SCSMR. SCSMR is initialized to H'0000 by a power-on

reset.

0000000000000000

R/W

Bit:

Initial value:

R/W:

--------

CHR

STOP

CKS[1:0]

Bit

Bit Name

Initial

Value

R/W

Description

15 to 8

⎯

All 0

Reserved

These bits are always read as 0. The write value should

always be 0.

R/W

Communication Mode

Selects whether the SCIF operates in asynchronous or

clocked synchronous mode.

0: Asynchronous mode

1: Clocked synchronous mode

CHR

R/W

Character Length

Selects 7-bit or 8-bit data length in asynchronous mode.

In clocked synchronous mode, the data length is always

8 bits, regardless of the CHR setting.

0: 8-bit data

1: 7-bit data*

Note: *

When 7-bit data is selected, the MSB (bit 7) of

the transmit FIFO data register is not

transmitted.

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