Processor Users Manual

MOTOROLA Contents xix
CONTENTS
Paragraph
Number
Title
Page
Number
19.3.5.2 Asynchronous Protocols ..........................................................................19-21
19.3.6 Digital Phase-Locked Loop (DPLL) Operation...........................................19-22
19.3.6.1 Encoding Data with a DPLL....................................................................19-24
19.3.7 Clock Glitch Detection.................................................................................19-26
19.3.8 Reconfiguring the SCCs...............................................................................19-26
19.3.8.1 General Reconfiguration Sequence for an SCC Transmitter ...................19-26
19.3.8.2 Reset Sequence for an SCC Transmitter..................................................19-27
19.3.8.3 General Reconfiguration Sequence for an SCC Receiver .......................19-27
19.3.8.4 Reset Sequence for an SCC Receiver ......................................................19-27
19.3.8.5 Switching Protocols .................................................................................19-27
19.3.9 Saving Power ...............................................................................................19-27
Chapter 20
SCC UART Mode
20.1 Features ..............................................................................................................20-2
20.2 Normal Asynchronous Mode .............................................................................20-3
20.3 Synchronous Mode.............................................................................................20-3
20.4 SCC UART Parameter RAM .............................................................................20-4
20.5 Data-Handling Methods: Character- or Message-Based....................................20-5
20.6 Error and Status Reporting.................................................................................20-6
20.7 SCC UART Commands .....................................................................................20-6
20.8 Multidrop Systems and Address Recognition....................................................20-7
20.9 Receiving Control Characters ............................................................................20-8
20.10 Hunt Mode (Receiver)......................................................................................20-10
20.11 Inserting Control Characters into the Transmit Data Stream...........................20-10
20.12 Sending a Break (Transmitter) .........................................................................20-11
20.13 Sending a Preamble (Transmitter)....................................................................20-11
20.14 Fractional Stop Bits (Transmitter)....................................................................20-11
20.15 Handling Errors in the SCC UART Controller ................................................20-12
20.16 UART Mode Register (PSMR) ........................................................................20-13
20.17 SCC UART Receive Buffer Descriptor (RxBD) .............................................20-15
20.18 SCC UART Transmit Buffer Descriptor (TxBD) ............................................20-18
20.19 SCC UART Event Register (SCCE) and Mask Register (SCCM) ..................20-19
20.20 SCC UART Status Register (SCCS)................................................................20-21
20.21 SCC UART Programming Example ................................................................20-22
20.22 S-Records Loader Application .........................................................................20-23