CHAPTER 10 SERIAL INTERFACE FUNCTION
User’s Manual U14492EJ3V0UD
455
14
RXB14
13
RXB13
12
RXB12
2
RXB2
3
RXB3
4
RXB4
5
RXB5
6
RXB6
7
RXB7
8
RXB8
9
RXB9
10
RXB10
11
RXB11
15
RXB15
1
RXB1
0
RXB0
RXB1
[2-frame continuous reception buffer register 1]
Address
FFFFFA20H
Initial value
Undefined
2
RXB2
3
RXB3
4
RXB4
5
RXB5
6
RXB6
7
RXB7
1
RXB1
0
RXB0
RXBL1
[Reception buffer register L1]
Address
FFFFFA22H
Initial value
Undefined
14
RXB14
13
RXB13
12
RXB12
2
RXB2
3
RXB3
4
RXB4
5
RXB5
6
RXB6
7
RXB7
8
RXB8
9
RXB9
10
RXB10
11
RXB11
15
RXB15
1
RXB1
0
RXB0
RXB2
[2-frame continuous reception buffer register 2]
Address
FFFFFA40H
Initial value
Undefined
2
RXB2
3
RXB3
4
RXB4
5
RXB5
6
RXB6
7
RXB7
1
RXB1
0
RXB0
RXBL2
[Reception buffer register L2]
Address
FFFFFA42H
Initial value
Undefined
Bit Position
Bit Name
Function
15 to 0
RXB15 to
RXB0
Stores receive data.
0 can be read for the RXBn register when 7, 8 bit/character data is received.
When an extension bit is set during 9 bit/character data reception, the extension bit
(RXB8) is stored in RB8 of the ASISn register simultaneously with saving to the
reception buffer.
0 can be read for the RXB7 bit of the RXBLn register during 7 bit/character data
reception.
(a) When 2-frame continuous reception is set
14
RXB14
13
RXB13
12
RXB12
2
RXB2
3
RXB3
4
RXB4
5
RXB5
6
RXB6
7
RXB7
8
RXB8
9
RXB9
10
RXB10
11
RXB11
15
RXB15
1
RXB1
0
RXB0
RXBn
7-/8-bit data of 1st frame
7-/8-bit data of 2nd frame
(b) When 9-bit extension reception is set
14
RXB14
13
RXB13
12
RXB12
2
RXB2
3
RXB3
4
RXB4
5
RXB5
6
RXB6
7
RXB7
8
RXB8
9
RXB9
10
RXB10
11
RXB11
15
RXB15
1
RXB1
0
RXB0
RXBn
9-bit extended data
When 9-bit extension is set, the extension bit (RXB8) is stored in the RB8 bit of the ASISn register
simultaneously with saving to the reception buffer.
Содержание V850E/IA1 mPD703116
Страница 2: ...2 User s Manual U14492EJ3V0UD MEMO...