MC68HC705C9A_1 Datasheet, PDF (92/157 Pages) Freescale Semiconductor, Inc – General Release Specification

Freescale Semiconductor, Inc.
General Release Specification _{SCI I/O Registers}
9.14.3 SCI Control Register 2 (SCCR2)
SCI control register 2, shown in Figure 9-10, has these functions:
• Enables the SCI receiver and SCI receiver interrupts
• Enables the SCI transmitter and SCI transmitter interrupts
• Enables SCI receiver idle interrupts
• Enables SCI transmission complete interrupts
• Enables SCI wakeup
• Transmits SCI break characters
$000F Bit 7
6
5
4
3
2
1
Bit 0
Read:
TIE
TCIE
RIE
ILIE
TE
Write:
RE
RWU
SBK
Reset: 0
0
0
0
0
0
0
0
Figure 9-10. SCI Control Register 2 (SCCR2)
TIE — Transmit Interrupt Enable
This read/write bit enables SCI interrupt requests when the TDRE flag
becomes set. Resets clear the TIE bit.
1 = TDRE interrupt requests enabled
0 = TDRE interrupt requests disabled
TCIE — Transmission Complete Interrupt Enable
This read/write bit enables SCI interrupt requests when the TC flag
becomes set. Resets clear the TCIE bit.
1 = TC interrupt requests enabled
0 = TC interrupt requests disabled
RIE — Receiver Interrupt Enable
This read/write bit enables SCI interrupt requests when the RDRF flag
or the OR flag becomes set. Resets clear the RIE bit.
1 = RDRF interrupt requests enabled
0 = RDRF interrupt requests disabled
MC68HC705C9A — Rev. 2.0
Serial Communications Interface (SCI)
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