SH7727 Datasheet, PDF (562/1109 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH RISC engine Family/SH7700 Series

Section 17 Serial Communication Interface (SCI)
Bit 5: PE
Description
0
Parity bit not added or checked
(Initial value)
1
Parity bit added and checked*
Note: * When PE is set to 1, an even or odd parity bit is added to transmit data, depending on the
parity mode (O/E) setting. Receive data parity is checked according to the even/odd (O/E)
mode setting.
Bit 4—Parity Mode (O/E): Selects even or odd parity when parity bits are added and checked.
The O/E setting is used only in asynchronous mode and only when the parity enable bit (PE) is set
to 1 to enable parity addition and check. The O/E setting is ignored in the clock synchronous
mode, or in the asynchronous mode when parity addition and check is disabled.
Bit 4: O/E
0
Description
Even parity^*1
(Initial value)
1
Odd parity^*2
Notes: 1. If even parity is selected, the parity bit is added to transmit data to make an even
number of 1s in the transmitted character and parity bit combined. Receive data is
checked to see if it has an even number of 1s in the received character and parity bit
combined.
2. If odd parity is selected, the parity bit is added to transmit data to make an odd number
of 1s in the transmitted character and parity bit combined. Receive data is checked to
see if it has an odd number of 1s in the received character and parity bit combined.
Bit 3—Stop Bit Length (STOP): Selects one or two bits as the stop bit length in the
asynchronous mode. This setting is used only in the asynchronous mode. It is ignored in the clock
synchronous mode because no stop bits are added.
In receiving, only the first stop bit is checked, regardless of the STOP bit setting. If the second
stop bit is 1, it is treated as a stop bit, but if the second stop bit is 0, it is treated as the start bit of
the next incoming character.
Bit 3: STOP Description
0
One stop bit ^*1
(Initial value)
1
Two stop bits^*2
Notes: 1. In transmitting, a single bit of 1 is added at the end of each transmitted character.
2. In transmitting, two bits of 1 are added at the end of each transmitted character.
Rev. 5.00 Dec 12, 2005 page 490 of 1034
REJ09B0254-0500