SH7011 Datasheet, PDF (204/292 Pages) Renesas Technology Corp – CMOS single-chip microprocessors

• 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 when the parity enable bit (PE) is set to 1 to enable parity addition
and check. The O/E setting is ignored when parity addition and check is disabled.
Bit 4: O/E
0
1
Description
Even parity (initial value). 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.
Odd parity. 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 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
0
1
Description
One stop bit (initial value). In transmitting, a single bit of 1 is added at
the end of each transmitted character.
Two stop bits. In transmitting, two bits of 1 are added at the end of each
transmitted character.
• Bit 2—Multiprocessor Mode (MP): Selects multiprocessor format. When multiprocessor
format is selected, settings of the parity enable (PE) and parity mode (O/E) bits are ignored.
For the multiprocessor communication function, see section 12.3.3, Multiprocessor
Communication.
Bit 2: MP
0
1
Description
Multiprocessor function disabled (initial value)
Multiprocessor format selected
• Bits 1 and 0—Clock Select 1 and 0 (CKS1 and CKS0): These bits select the internal clock
source of the on-chip baud rate generator. Four clock sources are available; φ, φ/4, φ/16, or
φ/64. For further information on the clock source, bit rate register settings, and baud rate, see
section 12.2.8, Bit Rate Register.
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