
PRELIMINARY
Contents
Paragraph
Number Title Page
Number
MOTOROLA Contents xix
PRELIMINARY—SUBJECT TO CHANGE WITHOUT NOTICE
15.6.2.3 Command RAM....................................................................................... 15-24
15.6.3 QSPI Pins..................................................................................................... 15-25
15.6.4 QSPI Operation............................................................................................ 15-26
15.6.4.1 Enabling, Disabling, and Halting the SPI................................................ 15-27
15.6.4.2 QSPI Interrupts........................................................................................ 15-28
15.6.4.3 QSPI Flow ............................................................................................... 15-28
15.6.5 Master Mode Operation............................................................................... 15-36
15.6.5.1 Clock Phase and Polarity......................................................................... 15-37
15.6.5.2 Baud Rate Selection................................................................................. 15-37
15.6.5.3 Delay Before Transfer ............................................................................. 15-38
15.6.5.4 Delay After Transfer................................................................................ 15-38
15.6.5.5 Transfer Length........................................................................................ 15-39
15.6.5.6 Peripheral Chip Selects............................................................................ 15-39
15.6.5.7 Optional Enhanced Peripheral Chip Selects............................................ 15-40
15.6.5.8 Master Wraparound Mode....................................................................... 15-41
15.6.6 Slave Mode.................................................................................................. 15-41
15.6.6.1 Description of Slave Operation ...............................................................15-43
15.6.7 Slave Wraparound Mode .............................................................................15-44
15.6.8 Mode Fault................................................................................................... 15-45
15.7 Serial Communication Interface...................................................................... 15-45
15.7.1 SCI Registers ............................................................................................... 15-48
15.7.2 SCI Control Register 0 (SCCxR0)...............................................................15-49
15.7.3 SCI Control Register 1 (SCCxR1)...............................................................15-49
15.7.4 SCI Status Register (SCxSR)....................................................................... 15-51
15.7.5 SCI Data Register (SCxDR)........................................................................15-53
15.7.6 SCI Pins ....................................................................................................... 15-54
15.7.7 SCI Operation.............................................................................................. 15-54
15.7.7.1 Definition of Terms.................................................................................. 15-55
15.7.7.2 Serial Formats.......................................................................................... 15-55
15.7.7.3 Baud Clock .............................................................................................. 15-56
15.7.7.4 Parity Checking ....................................................................................... 15-56
15.7.7.5 Transmitter Operation.............................................................................. 15-57
15.7.7.6 Receiver Operation.................................................................................. 15-59
15.7.7.7 Receiver Bit Processor............................................................................. 15-59
15.7.7.8 Receiver Functional Operation................................................................15-61
15.7.7.9 Idle-Line Detection.................................................................................. 15-62
15.7.7.10 Receiver Wake-Up................................................................................... 15-63
15.7.7.11 Internal Loop Mode................................................................................. 15-63
15.8 SCI Queue Operation....................................................................................... 15-63
15.8.1 Queue Operation of SCI1 for Transmit and Receive................................... 15-63
15.8.2 Queued SCI1 Status and Control Registers.................................................15-64