NEC 78K0 User Manual page 269

Figure 13-5. Format of Asynchronous Serial Interface Operation Mode Register 6 (ASIM6) (2/2)
RXE6
0 Disables reception (synchronously resets the reception circuit).
1 Enables reception
PS61
0
0
1
1
CL6
0 Character length of data = 7 bits
1 Character length of data = 8 bits
SL6
0 Number of stop bits = 1
1 Number of stop bits = 2
ISRM6
0 "INTSRE6" occurs in case of error (at this time, INTSR6 does not occur).
1 "INTSR6" occurs in case of error (at this time, INTSRE6 does not occur).
Note If "reception as 0 parity" is selected, the parity is not judged. Therefore, bit 2 (PE6) of asynchronous serial
interface reception error status register 6 (ASIS6) is not set and the error interrupt does not occur.
Cautions 1. At startup, set POWER6 to 1 and then set TXE6 to 1. To stop the operation, clear TXE6 to 0,
and then clear POWER6 to 0.
2. At startup, set POWER6 to 1 and then set RXE6 to 1. To stop the operation, clear RXE6 to 0,
and then clear POWER6 to 0.
3. Set POWER6 to 1 and then set RXE6 to 1 while a high level is input to the RxD6 pin. If
POWER6 is set to 1 and RXE6 is set to 1 while a low level is input, reception is started.
4. Clear the TXE6 and RXE6 bits to 0 before rewriting the PS61, PS60, and CL6 bits.
5. Fix the PS61 and PS60 bits to 0 when mounting the device on LIN.
6. Make sure that TXE6 = 0 when rewriting the SL6 bit. Reception is always performed with "the
number of stop bits = 1", and therefore, is not affected by the set value of the SL6 bit.
7. Make sure that RXE6 = 0 when rewriting the ISRM6 bit.
CHAPTER 13 SERIAL INTERFACE UART6
PS60 Transmission operation
0 Does not output parity bit.
1 Outputs 0 parity.
0 Outputs odd parity.
1 Outputs even parity.
Specifies character length of transmit/receive data
Specifies number of stop bits of transmit data
Enables/disables occurrence of reception completion interrupt in case of error
User's Manual U16227EJ2V0UD
Enables/disables reception
Reception without parity
Reception as 0 parity
Judges as odd parity.
Judges as even parity.
Reception operation
Note
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