NEC 78K0S/KA1+ User Manual page 189

(6) Asynchronous serial interface control register 6 (ASICL6)
This register controls the serial communication operations of serial interface UART6.
ASICL6 can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to 16H.
Caution ASICL6 can be refreshed (the same value is written) by software during a communication
operation (when bit 7 (POWER6) and bit 6 (TXE6) of ASIM6 = 1 or bit 7 (POWER6) and bit 5
(RXE6) of ASIM6 = 1). However, if the SBRT6 = 1 and SBTT = 1 are set in the refresh operation
during the SBF reception (SBRF6 = 1) or SBF transmission (between the SBTT6 setting (1) and
the INTST6 occurrence), it triggers the SBF reception and SBF transmission again, so do not
set.
Figure 11-10. Format of Asynchronous Serial Interface Control Register 6 (ASICL6) (1/2)
Address: FF98H After reset: 16H R/W
Symbol <7>
ASICL6 SBRF6
SBRF6
0
1
SBRT6
0
1
SBTT6
0
1
Note Bit 7 is read-only.
CHAPTER 11 SERIAL INTERFACE UART6
Note
<6> 5
SBRT6 SBTT6
If POWER6 = 0 and RXE6 = 0 or if SBF reception has been completed correctly
SBF reception in progress
SBF reception trigger
SBF transmission trigger
User's Manual U16898EJ3V0UD
4 3
SBL62 SBL61 SBL60
SBF reception status flag
SBF reception trigger
−
SBF transmission trigger
−
2 1 0
DIR6 TXDLV6
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