MPC8280 datasheet(26/1386 Pages) FREESCALE

26 / 1386 page

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

xxvi

Freescale Semiconductor

Contents

Paragraph

Number

Title

Page

Number

Chapter 21

SCC UART Mode

21.1

Features .......................................................................................................................... 21-2

21.2

Normal Asynchronous Mode......................................................................................... 21-2

21.3

Synchronous Mode ........................................................................................................ 21-3

21.4

SCC UART Parameter RAM ......................................................................................... 21-3

21.5

Data-Handling Methods: Character- or Message-Based ............................................... 21-5

21.6

Error and Status Reporting............................................................................................. 21-5

21.7

SCC UART Commands ................................................................................................. 21-6

21.8

Multidrop Systems and Address Recognition ............................................................... 21-7

21.9

Receiving Control Characters ........................................................................................ 21-7

21.10

Hunt Mode (Receiver) ................................................................................................... 21-9

21.11

Inserting Control Characters into the Transmit Data Stream......................................... 21-9

21.12

Sending a Break (Transmitter)..................................................................................... 21-10

21.13

Sending a Preamble (Transmitter) ............................................................................... 21-10

21.14

Fractional Stop Bits (Transmitter) ............................................................................... 21-11

21.15

Handling Errors in the SCC UART Controller ............................................................ 21-12

21.16

UART Mode Register (PSMR).................................................................................... 21-13

21.17

SCC UART Receive Buffer Descriptor (RxBD) ......................................................... 21-15

21.18

SCC UART Transmit Buffer Descriptor (TxBD) ........................................................ 21-18

21.19

SCC UART Event Register (SCCE) and Mask Register (SCCM) .............................. 21-19

21.20

SCC UART Status Register (SCCS)............................................................................ 21-21

21.21

SCC UART Programming Example ............................................................................ 21-22

21.22

S-Records Loader Application..................................................................................... 21-23

Chapter 22

SCC HDLC Mode

22.1

SCC HDLC Features ..................................................................................................... 22-1

22.2

SCC HDLC Channel Frame Transmission .................................................................... 22-2

22.3

SCC HDLC Channel Frame Reception ......................................................................... 22-2

22.4

SCC HDLC Parameter RAM......................................................................................... 22-3

22.5

Programming the SCC in HDLC Mode......................................................................... 22-5

22.6

SCC HDLC Commands ................................................................................................. 22-5

22.7

Handling Errors in the SCC HDLC Controller.............................................................. 22-6

22.8

HDLC Mode Register (PSMR)...................................................................................... 22-7

22.9

SCC HDLC Receive Buffer Descriptor (RxBD) ........................................................... 22-8

22.10

SCC HDLC Transmit Buffer Descriptor (TxBD)........................................................ 22-12

22.11

HDLC Event Register (SCCE)/HDLC Mask Register (SCCM) ................................. 22-13

22.12

SCC HDLC Status Register (SCCS)............................................................................ 22-15

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