
12
12-22
Ver.0.10
SERIAL I/O
12.2 Serial I/O Related Registers
D0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
D15
RDATA
<When reset : Indeterminate>
D
Bit Name
Function
R
W
0 - 6
No functions assigned
0
—
8 - 15
RDATA
Stores receive data.
—
(Receive data)
The SIOn Receive Buffer Register is used to store the receive data. When the serial I/O finishes
receiving data, the content of the SIO Receive Shift Register is transferred to the SIO Receive
Buffer Register. This register is a read-only register.
For 7-bit data (UART mode only), data is set in bits D9-D15, with D8 and D7 always set to 0. For 8-
bit data, data is set in bits D8-D15, with D7 always set to 0.
After reception is completed, you may read out the content of the SIO Receive Buffer Register, but
if the serial I/O finishes receiving the next data before you read the previous data, an overrun error
occurs. In this case, the data received thereafter is not transferred to the Receive Buffer Register.
To restart reception normally, clear the Receive Control Register's REN (receive enable) bit to 0.
Note : For 7-bit and 8-bit data, the register can be accessed bytewise.
12.2.6 SIO Receive Buffer Registers
■
SIO0 Receive Buffer Register (S0RXB)
<Address: H'0080 0114>
■
SIO1 Receive Buffer Register (S1RXB)
<Address: H'0080 0124>
■
SIO2 Receive Buffer Register (S2RXB)
<Address: H'0080 0134>
■
SIO3 Receive Buffer Register (S3RXB)
<Address: H'0080 0144>
■
SIO4 Receive Buffer Register (S4RXB)
<Address: H'0080 0A14>
■
SIO5 Receive Buffer Register (S5RXB)
<Address: H'0080 0A24>
Summary of Contents for M32170F3VFP
Page 42: ...1 1 24 Ver 0 10 OVERVIEW 1 4 Pin Layout This is a blank page ...
Page 56: ...2 2 14 Ver 0 10 This is a blank page ...
Page 88: ...3 3 32 Ver 0 10 ADDRESS SPACE 3 7 Notes on Address Space This is a blank page ...
Page 270: ...9 9 40 Ver 0 10 DMAC 9 4 Precautions about the DMAC This is a blank page ...
Page 614: ...12 12 64 Ver 0 10 This is a blank page SERIAL I O 12 9 Precautions on Using UART Mode ...
Page 756: ...17 17 10 Ver 0 10 RAM BACKUP MODE 17 4 Exiting RAM Backup Mode Wakeup This is a blank page ...
Page 762: ...18 18 6 Ver 0 10 OSCILLATION CIRCUIT 18 2 Clock Generator Circuit This is a blank page ...
Page 831: ...CHAPTER 22 CHAPTER 22 TYPICAL CHARACTERISTICS 22 1 A D Conversion Characteristics ...
Page 833: ...Appendix 1 1 Dimensional Outline Drawing APPENDIX 1 APPENDIX 1 MECHANICAL SPECIFICATIONS ...
Page 841: ...Appendix 3 1 Precautions about Noise APPENDIX 3 APPENDIX 3 PRECAUTIONS ABOUT NOISE ...