
Serial communications interface (SCI) ST72321xx-Auto
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15.7.3 Control register 2 (SCICR2)
0PIE
Parity interrupt enable
This bit enables the interrupt capability of the hardware parity control when a parity
error is detected (PE bit set). It is set and cleared by software.
0: Parity error interrupt disabled
1: Parity error interrupt enabled
Table 74. SCICR1 register description (continued)
Bit Name Function
SCICR2 Reset value: 0000 0000 (00h)
76543210
TIE TCIE RIE ILIE TE RE RWU SBK
RW RW RW RW RW RW RW RW
Table 75. SCICR2 register description
Bit Name Function
7TIE
Transmitter interrupt enable
This bit is set and cleared by software.
0: Interrupt is inhibited
1: An SCI interrupt is generated whenever TDRE = 1 in the SCISR register.
6TCIE
Transmission complete interrupt enable
This bit is set and cleared by software.
0: Interrupt is inhibited
1: An SCI interrupt is generated whenever TC = 1 in the SCISR register.
5RIE
Receiver interrupt enable
This bit is set and cleared by software.
0: Interrupt is inhibited
1: An SCI interrupt is generated whenever OR = 1 or RDRF = 1 in the SCISR
register.
4ILIE
Idle line interrupt enable
This bit is set and cleared by software.
0: Interrupt is inhibited
1: An SCI interrupt is generated whenever IDLE = 1 in the SCISR register.
3TE
Transmitter enable
This bit enables the transmitter. It is set and cleared by software.
0: Transmitter is disabled
1: Transmitter is enabled
Notes:
During transmission, a ‘0’ pulse on the TE bit (‘0’ followed by ‘1’) sends a preamble
(idle line) after the current word.
When TE is set there is a 1 bit-time delay before the transmission starts.
Caution: The TDO pin is free for general purpose I/O only when the TE and RE bits
are both cleared (or if TE is never set).
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