UPD78F0411GA-GAM-AX Datasheet, PDF (344/564 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

CHAPTER 14 SERIAL INTERFACE UART6
14.3 Registers Controlling Serial Interface UART6
Serial interface UART6 is controlled by the following twelve registers.
• Asynchronous serial interface operation mode register 6 (ASIM6)
• Asynchronous serial interface reception error status register 6 (ASIS6)
• Asynchronous serial interface transmission status register 6 (ASIF6)
• Clock selection register 6 (CKSR6)
• Baud rate generator control register 6 (BRGC6)
• Asynchronous serial interface control register 6 (ASICL6)
• Input switch control register (ISC)
• Port function register 1 (PF1)
• Port mode register 1 (PM1)
• Port register 1 (P1)
• Port mode register 11 (PM11)
• Port register 11 (P11)
(1) Asynchronous serial interface operation mode register 6 (ASIM6)
This 8-bit register controls the serial communication operations of serial interface UART6.
This register can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to 01H.
Remark ASIM6 can be refreshed (the same value is written) by software during a communication operation
(when bits 7 and 6 (POWER6, TXE6) of ASIM6 = 1 or bits 7 and 5 (POWER6, RXE6) of ASIM6 = 1).
Figure 14-5. Format of Asynchronous Serial Interface Operation Mode Register 6 (ASIM6) (1/2)
Address: FF50H After reset: 01H R/W
Symbol
<7>
<6>
<5>
4
3
2
ASIM6
POWER6
TXE6
RXE6
PS61
PS60
CL6
1
0
SL6
ISRM6
POWER6
0^{Note 1}
1
Enables/disables operation of internal operation clock
Disables operation of the internal operation clock (fixes the clock to low level) and asynchronously
resets the internal circuit^{Note 2}.
Enables operation of the internal operation clock
TXE6
0
1
Enables/disables transmission
Disables transmission (synchronously resets the transmission circuit).
Enables transmission
RXE6
0
1
Enables/disables reception
Disables reception (synchronously resets the reception circuit).
Enables reception
Notes 1.
2.
The output of the TXD6 pin goes high level and the input from the RXD6 pin is fixed to the high level
when POWER6 = 0 during transmission.
Asynchronous serial interface reception error status register 6 (ASIS6), asynchronous serial interface
transmission status register 6 (ASIF6), bit 7 (SBRF6) and bit 6 (SBRT6) of asynchronous serial
interface control register 6 (ASICL6), and receive buffer register 6 (RXB6) are reset.
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User’s Manual U18698EJ1V0UD