mc68hc08qa24 Freescale Semiconductor, Inc, mc68hc08qa24 Datasheet - Page 227

• Manufacturer Part Number: mc68hc08qa24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

17.9.1 SCI Control Register 1
MC68HC08QA24
Freescale Semiconductor
Address:
SCI control register 1:
LOOPS — Loop Mode Select Bit
ENSCI — Enable SCI Bit
Reset:
Read:
Write:
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This read/write bit enables loop mode operation. In loop mode the
PTE1/RxD pin is disconnected from the SCI, and the transmitter
output goes into the receiver input. Both the transmitter and the
receiver must be enabled to use loop mode. Reset clears the LOOPS
bit.
This read/write bit enables the SCI and the SCI baud rate generator.
Clearing ENSCI sets the SCTE and TC bits in SCI status register 1
and disables transmitter interrupts. Reset clears the ENSCI bit.
1 = Loop mode enabled
0 = Normal operation enabled
1 = SCI enabled
0 = SCI disabled
Enables loop mode operation
Enables the SCI
Controls output polarity
Controls character length
Controls SCI wakeup method
Controls idle character detection
Enables parity function
Controls parity type
LOOPS
Serial Communications Interface (SCI)
$0013
Bit 7
0
Figure 17-7. SCI Control Register 1 (SCC1)
ENSCI
6
0
TXINV
5
0
M
4
0
Serial Communications Interface (SCI)
WAKE
3
0
ILTY
2
0
PEN
1
0
Technical Data
Bit 0
PTY
0
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