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Chapter 15
Asynchronous Serial Interface C (UARTC)
User’s Manual U16580EE3V1UD00
15.5.9 Parity types and operations
Caution:
When using the LIN function, fix the UCnPS1 and UCnPS0 bits of the UCnCTL0
register to 00.
The parity bit is used to detect bit errors in the communication data. Normally the same parity is used
on the transmission side and the reception side.
In the case of even parity and odd parity, it is possible to detect “1” bit errors (odd count). In the case of
0 parity and no parity, errors cannot be detected.
(1)
Even parity
(a) During transmission
The number of bits whose value is “1” among the transmit data, including the parity bit, is
controlled so as to be an even number. The parity bit values are as follows.
•
Odd number of bits whose value is “1” among transmit data:
1
•
Even number of bits whose value is “1” among transmit data:
0
(b) During reception
The number of bits whose value is “1” among the reception data, including the parity bit, is
counted, and if it is an odd number, a parity error is output.
(2)
Odd parity
(a) During transmission
Opposite to even parity, the number of bits whose value is “1” among the transmit data, including
the parity bit, is controlled so that it is an odd number. The parity bit values are as follows.
•
Odd number of bits whose value is “1” among transmit data:
0
•
Even number of bits whose value is “1” among transmit data: 1
(b) During reception
The number of bits whose value is “1” among the receive data, including the parity bit, is counted,
and if it is an even number, a parity error is output.
(3)
0 parity
During transmission, the parity bit is always made 0, regardless of the transmit data.
During reception, parity bit check is not performed. Therefore, no parity error is generated,
regardless of whether the parity bit is 0 or 1.
(4)
No parity
No parity bit is added to the transmit data.
Reception is performed assuming that there is no parity bit. No parity error occurs since there is
no parity bit.
Summary of Contents for V850E/PH2
Page 6: ...6 Preface User s Manual U16580EE3V1UD00...
Page 16: ...16 User s Manual U16580EE3V1UD00...
Page 28: ...28 User s Manual U16580EE3V1UD00...
Page 32: ...32 User s Manual U16580EE3V1UD00...
Page 84: ...84 Chapter 2 Pin Functions User s Manual U16580EE3V1UD00 MEMO...
Page 144: ...144 Chapter 3 CPU Functions User s Manual U16580EE3V1UD00 MEMO...
Page 192: ...192 Chapter 5 Memory Access Control Function PD70F3187 only User s Manual U16580EE3V1UD00 MEMO...
Page 312: ...312 Chapter 9 16 Bit Timer Event Counter P User s Manual U16580EE3V1UD00 MEMO...
Page 534: ...534 Chapter 11 16 bit Timer Event Counter T User s Manual U16580EE3V1UD00...
Page 969: ...969 Chapter 20 Port Functions User s Manual U16580EE3V1UD00 MEMO...
Page 970: ...970 Chapter 20 Port Functions User s Manual U16580EE3V1UD00...
Page 976: ...976 Chapter 22 Internal RAM Parity Check Function User s Manual U16580EE3V1UD00 MEMO...
Page 984: ...984 Chapter 23 On Chip Debug Function OCD User s Manual U16580EE3V1UD00 MEMO...
Page 1006: ...1006 Chapter 24 Flash Memory User s Manual U16580EE3V1UD00 MEMO...
Page 1036: ...1036 Chapter 27 Recommended Soldering Conditions User s Manual U16580EE3V1UD00 MEMO...
Page 1046: ...1046 Appendix A Index User s Manual U16580EE3V1UD00 MEMO...
Page 1052: ...1052 User s Manual U16580EE3V1UD00...
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