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R01UH0336EJ0102 Rev.1.02
Page 1226 of 1538
Jul 17, 2014
V850E2/PG4-L
Section 22 Synchronous/Asynchronous Serial Interface H (UARTH)
(8)
URTHnOPT0 – UARTHn Option Register 0
This register specifies the optional features for use in serial transfer by the
UARTHn interface.
Access
This register can be read/written in 16-bit units.
Address
<URTHn_base0> + 48
H
Initial value
0000
H
This register is initialized by a reset from any source.
15
14
13
12
11
10
9
8
URTHn
EBE
URTHn
EGE
URTHn
EJL
URTHn
SCFR
URTHn
RSFR
URTHn
RXFR
URTHn
RTSL
URTHn
CTSL
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
7
6
5
4
3
2
1
0
0
URTHn
HS
URTHn
DM
URTHn
MSS
URTHn
SAS
URTHn
F2R
URTHn
F2T
0
R
R/W
R/W
R/W
R/W
R/W
R/W
R
Table 22-15
URTHnOPT0 Register Contents (1/3)
Bit Position
Bit Name
Function
15
URTHnEBE
Enables and disables operation with the extension bit
0: Disables extension bit operation
The bit length set for transmission and reception (URTHnCTL1.URTHnCLG)
is used in transmitting and receiving data.
1: Enables extension bit operation
The character length used in transmitting and receiving data is 9 bits (an
extension bit is appended to each 8-bit character for transmission and
reception).
•
The setting of this bit is only valid when the setting of the bit length for
transmission and reception is 8 bits (URTHnCTL1.URTHnCLG = 1). The
setting becomes invalid when the length is 7 bits (URTHnCTL1.URTHnCLG =
0), in which case data are transmitted and received with a character length of
7 bits.
•
When the transmission/reception is performed in the LIN format, set
URTHnEBE to 0.
•
Changing this bit is only allowed while the UARTHn operation is disabled
(URTHnCTL0.URTHnPW = 0).
•
For details on extension bit detection, refer to Section 22.6.5, Extension bit
Detection/ID Compare-Match Detection.
Содержание V850 Series
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