MPC8280 datasheet(30/1386 Pages) FREESCALE

30 / 1386 page

MPC8280 PowerQUICC II Family Reference Manual, Rev. 1

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Freescale Semiconductor

Contents

Paragraph

Number

Title

Page

Number

27.5.7.6

USB Mask Register (USBMR)............................................................................ 27-21

27.5.7.7

USB Status Register (USBS)............................................................................... 27-21

27.5.7.8

USB Start of Frame Timer (USSFT) ................................................................... 27-22

27.6

USB Buffer Descriptor Ring........................................................................................ 27-22

27.6.1

USB Receive Buffer Descriptor (Rx BD) for Host and Function ........................... 27-24

27.6.2

USB Transmit Buffer Descriptor (Tx BD) for Function.......................................... 27-26

27.6.3

USB Transmit Buffer Descriptor (Tx BD) for Host ................................................ 27-27

27.6.4

USB Transaction Buffer Descriptor (TrBD) for Host.............................................. 27-29

27.7

USB CP Commands..................................................................................................... 27-32

27.7.1

STOP Tx Command................................................................................................. 27-32

27.7.2

RESTART Tx Command ......................................................................................... 27-33

27.8

USB Controller Errors ................................................................................................. 27-33

27.9

USB Function Controller Initialization Example ........................................................ 27-34

27.10

Programming the USB Host Controller (Packet-Level) .............................................. 27-35

27.10.1

USB Host Controller Initialization Example ........................................................... 27-35

27.11

Programming the USB Host Controller (Transaction-Level) ...................................... 27-37

27.11.1

USB Host Controller Initialization Example ........................................................... 27-37

Chapter 28

Serial Management Controllers (SMCs)

28.1

Features .......................................................................................................................... 28-2

28.2

Common SMC Settings and Configurations ................................................................. 28-2

28.2.1

SMC Mode Registers (SMCMR1/SMCMR2)........................................................... 28-2

28.2.2

SMC Buffer Descriptor Operation............................................................................. 28-4

28.2.3

SMC Parameter RAM................................................................................................ 28-5

28.2.3.1

SMC Function Code Registers (RFCR/TFCR) ..................................................... 28-8

28.2.4

Disabling SMCs On-the-Fly ...................................................................................... 28-8

28.2.4.1

SMC Transmitter Full Sequence............................................................................ 28-9

28.2.4.2

SMC Transmitter Shortcut Sequence .................................................................... 28-9

28.2.4.3

SMC Receiver Full Sequence ................................................................................ 28-9

28.2.4.4

SMC Receiver Shortcut Sequence......................................................................... 28-9

28.2.4.5

Switching Protocols ............................................................................................... 28-9

28.2.5

Saving Power ........................................................................................................... 28-10

28.2.6

Handling Interrupts in the SMC............................................................................... 28-10

28.3

SMC in UART Mode ................................................................................................... 28-10

28.3.1

Features .................................................................................................................... 28-11

28.3.2

SMC UART Channel Transmission Process ........................................................... 28-11

28.3.3

SMC UART Channel Reception Process................................................................. 28-11

28.3.4

Programming the SMC UART Controller ............................................................... 28-11

28.3.5

SMC UART Transmit and Receive Commands ...................................................... 28-12

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