MC68HC908AB32 MOTOROLA [Motorola, Inc], MC68HC908AB32 Datasheet - Page 262

• Manufacturer Part Number: MC68HC908AB32
• Description: HCMOS Microcontroller Unit
• Manufacturer: MOTOROLA [Motorola, Inc]

Serial Communications Interface
Technical Data
262
NOTE:
Address:
LOOPS — Loop Mode Select Bit
ENSCI — Enable SCI Bit
TXINV — Transmit Inversion Bit
Setting the TXINV bit inverts all transmitted values, including idle,
break, start, and stop bits.
Reset:
Read:
Write:
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.
This read/write bit reverses the polarity of transmitted data. Reset
clears the TXINV bit.
Freescale Semiconductor, Inc.
Serial Communications Interface Module (SCI)
For More Information On This Product,
1 = Loop mode enabled
0 = Normal operation enabled
1 = SCI enabled
0 = SCI disabled
1 = Transmitter output inverted
0 = Transmitter output not inverted
LOOPS
$0013
Bit 7
0
Figure 15-9. SCI Control Register 1 (SCC1)
Go to: www.freescale.com
ENSCI
6
0
TXINV
5
0
M
4
0
WAKE
3
0
MC68HC908AB32
ILTY
2
0
PEN
1
0
MOTOROLA
—
Rev. 1.0
Bit 0
PTY
0