TMP86FS49AFG Toshiba Semiconductor, TMP86FS49AFG Datasheet - Page 209

• Manufacturer Part Number: TMP86FS49AFG
• Description: 8-Bit Microcontroller
• Manufacturer: Toshiba Semiconductor

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SIO2CR<SIOS>
SCK2
SO2 pin
INTSIO2
interrupt
request
SIO2RDB
SIO2SR<SIOF>
SIO2SR<SEF>
SI2 pin
SIO2SR<TXF>
SIO2SR<TXERR>
SIO2TDB
SIO2SR<RXF>
SIO2CR<SIOINH>
pin output
Figure 15-15 Example of Transmit/Receive (Transmit) Error Processing
Writing transmit
data A
(b) Receive errors
contents, the received data is ignored while the SIO2SR<RXERR> is “1”.
A
Receive errors occur on the following situation. To protect SIO2RDB and the shift register
• Shift operation is finished before reading out received data from SIO2RDB at
A7 A6
D7 D6 D5 D4 D3 D2 D1 D0 E7 E6 E5 E4 E3 E2 E1 E0 F7 F6 F5 F4 F3 F2 F1 F0
SIO2SR<RXF> is “1” in an external clock operation.
If receive error occurs, set the SIO2CR<SIOS> to “0” for reading the data that received
immediately before error occurence. And read the data from SIO2RDB. Data in shift
register (at errors occur) can be read by reading the SIO2RDB again.
When SIO2SR<RXERR> is cleared to “0” after reading the received data,
SIO2SR<RXF> is cleared to “0”.
After clearing SIO2CR<SIOS> to “0”, when 8-bit serial clock is input to
ceive operation is stopped. To restart the receive operation, confirm that
SIO2SR<SIOF> is cleared to “0”.
If the received error occurs, set the SIO2CR<SIOINH> to “1” for stopping the receive
operation immediately. In this case, SIO2CR<SIOS>, SIO2SR register, SIO2RDB reg-
ister and SIO2TDB register are initialized.
Start shift
operation
A5 A4 A3 A2 A1 A0 B7 B6 B5 B4 B3 B2 B1 B0
Reading received
data D
Writing transmit
data B
Page 193
D
B
Start shift
operation
Reading received
data E
E
Start shift
operation
Reading received
data F
F
TMP86FS49AFG
SCK2
Unknown
pin, re-