mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 255

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

11.4.1 SCI Registers
11.4.1.1 Control Registers
MC68HC16Y3/916Y3
USER’S MANUAL
The SCI programming model includes the QSM global and pin control registers, and
four SCI registers. There are two SCI control registers (SCCR0 and SCCR1), one sta-
tus register (SCSR), and one data register (SCDR). Refer to D.7 Queued Serial Mod-
ule for register bit and field definitions.
SCCR0 contains the baud rate selection field. Baud rate must be set before the SCI is
enabled. This register can be read or written.
SCCR1 contains a number of SCI configuration parameters, including transmitter and
receiver enable bits, interrupt enable bits, and operating mode enable bits. This
register can be read or written at any time. The SCI can modify the RWU bit under cer-
tain circumstances.
Changing the value of SCI control bits during a transfer may disrupt operation. Before
changing register values, allow the SCI to complete the current transfer, then disable
the receiver and transmitter.
On the MC68HC16Y3/916Y3, the SCI is not available. Instead, the
multichannel communications interface (MCCI) is used to provide
two
information, refer to SECTION 12 MULTICHANNEL COMMUNICA-
TION INTERFACE.
channels
Freescale Semiconductor, Inc.
For More Information On This Product,
of
QUEUED SERIAL MODULE
Go to: www.freescale.com
asynchronous
NOTE
communication.
For
more
MOTOROLA
11-23