Renesas H8SX/1650, Руководство по оборудованию

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Section 13 Serial Communication Interface (SCI)
Rev.2.00 Jun. 28, 2007 Page 456 of 666
REJ09B0311-0200
Bit Bit Name
Initial
Value R/W Description
5 PE 0 R/W Parity Enable (valid only in asynchronous mode)
When this bit is set to 1, the parity bit is added to
transmit data before transmission, and the parity bit is
checked in reception. For a multiprocessor format,
parity bit addition and checking are not performed
regardless of the PE bit setting.
4 O/
E
0 R/W Parity Mode (valid only when the PE bit is 1 in
asynchronous mode)
0: Selects even parity.
1: Selects odd parity.
3 STOP 0 R/W Stop Bit Length (valid only in asynchronous mode)
Selects the stop bit length in transmission.
0: 1 stop bit
1: 2 stop bits
In reception, only the first stop bit is checked. If the
second stop bit is 0, it is treated as the start bit of the
next transmit frame.
2 MP 0 R/W Multiprocessor Mode (valid only in asynchronous mode)
When this bit is set to 1, the multiprocessor function is
enabled. The PE bit and O/
E
bit settings are invalid in
multiprocessor mode.
1
0
CKS1
CKS0
0
0
R/W
R/W
Clock Select 1, 0
These bits select the clock source for the baud rate
generator.
00: P
φ
clock (n = 0)
01: P
φ
/4 clock (n = 1)
10: P
φ
/16 clock (n = 2)
11: P
φ
/64 clock (n = 3)
For the relation between the settings of these bits and
the baud rate, see section 13.3.9, Bit Rate Register
(BRR). n is the decimal display of the value of n in BRR
(see section 13.3.9, Bit Rate Register (BRR)).