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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. If the second stop bit is 0, it is treated as the start bit of the
next incoming character.
Bit 2—Multiprocessor Mode (MP): Selects a multiprocessor format. When a multiprocessor
format is selected, parity settings made by the PE and O/E bits are ignored. The MP bit setting is
valid only in asynchronous mode. It is ignored in synchronous mode.
For further information on the multiprocessor communication function, see section 13.3.3,
Multiprocessor Communication.
Bit 2
MP
Description
0
Multiprocessor function disabled
1
Multiprocessor format selected
Bits 1 and 0—Clock Select 1 and 0 (CKS1/0): These bits select the clock source for the on-chip
baud rate generator. Four clock sources are available: φ, φ/4, φ/16, and φ/64.
For the relationship between the clock source, bit rate register setting, and baud rate, see section
13.2.8, Bit Rate Register (BRR).
Bit 1
Bit 0
CKS1
CKS0
0
0
0
1
1
0
1
1
Description
φ
φ/4
φ/16
φ/64
Section 13 Serial Communication Interface
Rev. 4.00 Jan 26, 2006 page 487 of 938
(Initial value)
(Initial value)
REJ09B0276-0400
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