HD6432351 datasheet(587/1025 Pages) RENESAS

587 / 1025 page

Section 13 Serial Communication Interface (SCI)

Rev. 3.00 Sep 15, 2006 page 553 of 988

REJ09B0330-0300

Bit 5

Description

Parity bit addition and checking disabled

(Initial value)

Parity bit addition and checking enabled*

Note:

* When the PE bit is set to 1, the parity (even or odd) specified by the O/

E bit is added to

transmit data before transmission. In reception, the parity bit is checked for the parity

(even or odd) specified by the O/

E bit.

Bit 4—Parity Mode (O/

EEEE): Selects either even or odd parity for use in parity addition and

checking.

The O/

E bit setting is only valid when the PE bit is set to 1, enabling parity bit addition and

checking, in asynchronous mode. The O/

E bit setting is invalid in clocked synchronous mode, and

when parity addition and checking is disabled in asynchronous mode.

Bit 4

Description

Even parity*

(Initial value)

Odd parity*

Notes: 1. When even parity is set, parity bit addition is performed in transmission so that the total

number of 1 bits in the transmit character plus the parity bit is even.

In reception, a check is performed to see if the total number of 1 bits in the receive

character plus the parity bit is even.

2. When odd parity is set, parity bit addition is performed in transmission so that the total

number of 1 bits in the transmit character plus the parity bit is odd.

In reception, a check is performed to see if the total number of 1 bits in the receive

character plus the parity bit is odd.

Bit 3—Stop Bit Length (STOP): Selects 1 or 2 bits as the stop bit length in asynchronous mode.

The STOP bits setting is only valid in asynchronous mode. If clocked synchronous mode is set the

STOP bit setting is invalid since stop bits are not added.

Bit 3

STOP

Description

1 stop bit: In transmission, a single 1 bit (stop bit) is added to the end of a transmit

character before it is sent.

(Initial value)

2 stop bits: In transmission, two 1 bits (stop bits) are added to the end of a transmit

character before it is sent.

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