tmp86fh46bng TOSHIBA Semiconductor CORPORATION, tmp86fh46bng Datasheet - Page 121

• Manufacturer Part Number: tmp86fh46bng
• Description: 8 Bit Microcontroller Tlcs-870/c Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Serial Interface Status Register
Receive buffer register
Transmit buffer register
SIORDB
(0027H)
(0028H)
SIOTDB
(0028H)
SIOSR
Note 1: The operation error flag (TXERR and RXERR) are not automatically cleared by stopping transfer with
Note 2: *: Don't care
Note 1: SIOTDB is write only register. A bit manipulation should not be performed on the transmit buffer register using a read-
Note 2: The SIOTDB should be written after checking SIOSR<TXF> "1". When SIOSR<TXF> is "0", the writing data can't be
Note 3: *: Don't care
SIOF
RXERR
TXERR
SIOCR1<SIOS> "0". Therefore, set these bits to "0" for clearing these error flag. Or set SIOCR1<SIOINH> to "1".
modify-write instruction.
transferred to SIOTDB even if write instruction is executed to SIOTDB
SIOF
7
SEF
TXF
RXF
7
7
SEF
6
Serial transfer operation status
monitor
Number of clocks monitor
Transmit buffer empty flag
Receive buffer full flag
Transfer operation error flag
Receive operation error flag
6
6
TXF
5
5
5
RXF
4
4
4
TXERR
3
0: Transfer finished
1: Transfer in progress
0: 8 clocks
1: 1 to 7 clocks
0: Data exists in transmit buffer
1: No data exists in transmit buffer
0: No data exists in receive buffer
1: Data exists in receive buffer
Read
0: - (No error exist)
1: Transmit buffer under run occurs in an external clock mode
Write
0: Clear the flag
1: - (A write of "1" to this bit is ignored)
Read
0: - (No error exist)
1: Receive buffer over run occurs in an external clock mode
Write
0: Clear the flag
1: - (A write of "1" to this bit is ignored)
3
3
Page 103
RXERR
2
2
2
1
1
1
0
0
0
(Initial value: 0010 00**)
Read only
Write only
(Initial value: 0000 0000)
(Initial value: **** ****)
TMP86FH46BNG
Read
R/W
only