MCCIRM Freescale Semiconductor / Motorola, MCCIRM Datasheet - Page 15

• Manufacturer Part Number: MCCIRM
• Description: MCCIRM Multi-Channel Communications Interface Reference Manual
• Manufacturer: Freescale Semiconductor / Motorola

Reference Manual — Multichannel Communication Interface
1.1 Contents
1.2 General Information
Multichannel Communication Interface — Rev. 1.0
MOTOROLA
1.2
1.3
1.4
The multichannel communication interface (MCCI), a module in
Motorola's family of modular microcontrollers, contains three serial
interfaces:
The SPI provides easy peripheral expansion or interprocessor
communication via a full-duplex, synchronous, 3-line bus: data in, data
out, and a serial clock. Serial transfer of eight or 16 bits can begin with
the most significant bit (MSB) or least significant bit (LSB).
The MCCI module can be configured as a master or slave device. Clock
control logic allows a selection of clock polarity and a choice of two
clocking protocols to accommodate most available synchronous serial
peripheral devices. When the SPI is configured as a master, software
selects one of 254 different bit rates for the serial clock.
The SCI is a universal asynchronous receiver transmitter (UART) serial
interface with a standard non-return-to-zero (NRZ) mark/space format. It
operates in either full- or half-duplex mode and contains separate
transmitter- and receiver-enable bits and a double transmit buffer.
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Freescale Semiconductor, Inc.
For More Information On This Product,
One serial peripheral interface (SPI)
Two serial communication interfaces (SCI)
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Memory Map. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
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Functional Overview
Section 1. Functional Overview
Reference Manual
15