
CHAPTER 14 SERIAL INTERFACE UART6
User’s Manual U19780EJ2V0UD
377
Figure 14-10. Format of Asynchronous Serial Interface Control Register 6 (ASICL6) (2/2)
SBL62
SBL61
SBL60
SBF transmission output width control
1
0
1
SBF is output with 13-bit length.
1
1
0
SBF is output with 14-bit length.
1
1
1
SBF is output with 15-bit length.
0
0
0
SBF is output with 16-bit length.
0
0
1
SBF is output with 17-bit length.
0
1
0
SBF is output with 18-bit length.
0
1
1
SBF is output with 19-bit length.
1
0
0
SBF is output with 20-bit length.
DIR6
First-bit
specification
0
MSB
1
LSB
TXDLV6
Enables/disables inverting T
X
D6 output
0
Normal output of T
X
D6
1
Inverted output of T
X
D6
Cautions 1. In the case of an SBF reception error, the mode returns to the SBF reception mode. The
status of the SBRF6 flag is held (1).
2. Before setting the SBRT6 bit, make sure that bit 7 (POWER6) and bit 5 (RXE6) of ASIM6 = 1.
After setting the SBRT6 bit to 1, do not clear it to 0 before SBF reception is completed (before
an interrupt request signal is generated).
3. The read value of the SBRT6 bit is always 0. SBRT6 is automatically cleared to 0 after SBF
reception has been correctly completed.
4. Before setting the SBTT6 bit to 1, make sure that bit 7 (POWER6) and bit 6 (TXE6) of ASIM6 =
1. After setting the SBTT6 bit to 1, do not clear it to 0 before SBF transmission is completed
(before an interrupt request signal is generated).
5. The read value of the SBTT6 bit is always 0. SBTT6 is automatically cleared to 0 at the end of
SBF transmission.
6. Do not set the SBRT6 bit to 1 during reception, and do not set the SBTT6 bit to 1 during
transmission.
7. Before rewriting the DIR6 and TXDLV6 bits, clear the TXE6 and RXE6 bits to 0.
8. When the TXDLV6 bit is set to 1 (inverted TxD6 output), the TxD6/P10/TI51
Note
/TO51
Note
pin
cannot be used as a general-purpose port, regardless of the settings of POWER6 and TXE6.
When using the TxD6/P10/TI51
Note
/TO51
Note
pin as a general-purpose port, clear the TXDLV6 bit
to 0 (normal TxD6 output).
Note
78K0/KB2-A only.