Motorola MC68HC908AB32 User Manual

Serial Communications Interface
Technical Data MC68HC908AB32 — Rev. 1.0
262 Serial Communications Interface Module (SCI) MOTOROLA
LOOPS — Loop Mode Select Bit
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.
1 = Loop mode enabled
0 = Normal operation enabled
ENSCI — Enable SCI 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 = SCI enabled
0 = SCI disabled
TXINV — Transmit Inversion Bit
This read/write bit reverses the polarity of transmitted data. Reset
clears the TXINV bit.
1 = Transmitter output inverted
0 = Transmitter output not inverted
NOTE: Setting the TXINV bit inverts all transmitted values, including idle,
break, start, and stop bits.
Address: $0013
Bit 7 654321Bit 0
Read:
LOOPS ENSCI TXINV M WAKE ILTY PEN PTY
Write:
Reset: 00000000
Figure 15-9. SCI Control Register 1 (SCC1)

Motorola MC68HC908AB32 Specifications

General

Brand	Motorola
Model	MC68HC908AB32
Category	Controller
Language	English