MC68HC908AP16CFB datasheet(272/440 Pages) MOTOROLA

272 / 440 page

Infrared Serial Communications

Data Sheet

MC68HC908AP Family — Rev. 2.5

272

MOTOROLA

14.10.1 IRSCI Control Register 1

SCI control register 1:

•

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 — Loop Mode Select Bit

This read/write bit enables loop mode operation for the SCI only. In

loop mode the 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. The infrared

encoder/decoder is not in the loop. 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

Address:

$0040

Bit 7

654321

Bit 0

Read:

LOOPS

ENSCI

WAKE

ILTY

PEN

PTY

Write:

Reset:

00000000

Figure 14-12. IRSCI Control Register 1 (IRSCC1)

Freescale Semiconductor, Inc.

For More Information On This Product,

Go to: www.freescale.com

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