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Appendix B Internal I/O Registers
Rev. 6.00 Sep 12, 2006 page 464 of 526
REJ09B0326-0600
SSR—Serial status register
H'FFAC
SCI3
Bit
Initial value
Read/Write
Note:
*
Only a write of 0 for flag clearing is possible.
7
TDRE
1
R/(W)
6
RDRF
0
R/(W)
5
OER
0
R/(W)
0
MPBT
0
R/W
2
TEND
1
R
1
MPBR
0
R
4
FER
0
R/(W)
Receive data register full
0
There is no receive data in RDR
[Clearing conditions] • After reading RDRF = 1, cleared by writing 0 to RDRF
• When RDR data is read by an instruction
1
There is receive data in RDR
[Setting condition] When reception ends normally and receive data is transferred from RSR to RDR
Transmit data register empty
0
Transmit data written in TDR has not been transferred to TSR
[Clearing conditions] • After reading TDRE = 1, cleared by writing 0 to TDRE
• When data is written to TDR by an instruction
1
Transmit data has not been written to TDR, or transmit data written in TDR has been transferred to TSR
[Setting conditions]
• When bit TE in serial control register 3 (SCR3) is cleared to 0
• When data is transferred from TDR to TSR
Transmit end
0
Transmission in progress
[Clearing conditions]
1
Transmission ended
[Setting conditions]
Parity error
0
Reception in progress or completed normally
[Clearing condition] After reading PER = 1, cleared by writing 0 to PER
1
A parity error has occurred during reception
[Setting condition]
Framing error
0
Reception in progress or completed normally
[Clearing condition] After reading FER = 1, cleared by writing 0 to FER
1
A framing error has occurred during reception
[Setting condition]
When the stop bit at the end of the receive data is checked for a value of 1 at completion of
reception, and the stop bit is 0
Overrun error
0
Reception in progress or completed
[Clearing condition] After reading OER = 1, cleared by writing 0 to OER
1
An overrun error has occurred during reception
[Setting condition] When the next serial reception is completed with RDRF set to 1
Multiprocessor bit receive
Multiprocessor bit transfer
0
Data in which the multiprocessor bit is 0 has been received
1
Data in which the multiprocessor bit is 1 has been received
0
A 0 multiprocessor bit is transmitted
1
A 1 multiprocessor bit is transmitted
3
PER
0
R/(W)
*
*
*
*
*
• After reading TDRE = 1, cleared by writing 0 to TDRE
• When data is written to TDR by an instruction
• When bit TE in serial control register 3 (SCR3) is cleared to 0
• When bit TDRE is set to 1 when the last bit of a transmit character is sent
When the number of 1 bits in the receive data plus parity bit does not match the parity
designated by the parity mode bit (PM) in the serial mode register (SMR)
Содержание F-ZTAT H8/3642A Series
Страница 6: ...Rev 6 00 Sep 12 2006 page iv of xx ...
Страница 8: ...Rev 6 00 Sep 12 2006 page vi of xx ...
Страница 21: ...Rev 6 00 Sep 12 2006 page xix of xx Appendix E Product Code Lineup 522 Appendix F Package Dimensions 524 ...
Страница 22: ...Rev 6 00 Sep 12 2006 page xx of xx ...
Страница 124: ...Section 5 Power Down Modes Rev 6 00 Sep 12 2006 page 102 of 526 REJ09B0326 0600 ...
Страница 188: ...Section 6 ROM Rev 6 00 Sep 12 2006 page 166 of 526 REJ09B0326 0600 ...
Страница 190: ...Section 7 RAM Rev 6 00 Sep 12 2006 page 168 of 526 REJ09B0326 0600 ...
Страница 298: ...Section 9 Timers Rev 6 00 Sep 12 2006 page 276 of 526 REJ09B0326 0600 ...
Страница 378: ...Section 12 A D Converter Rev 6 00 Sep 12 2006 page 356 of 526 REJ09B0326 0600 ...
Страница 446: ...Section 13 Electrical Characteristics Rev 6 00 Sep 12 2006 page 424 of 526 REJ09B0326 0600 ...