Chapter 9 Analog-to-Digital ConverterMC9S12ZVMB Family Reference Manual Rev. 1.3336 NXP Semiconductors9.6.3.2.1 Introduction of The Command Sequence List (CSL) FormatA Command Sequence List (CSL) contains up to 64 conversion commands. A user selectable number ofsuccessive conversion commands in the CSL can be grouped as a command sequence. This sequence ofconversion commands is successively executed by the ADC at the occurrence of a Trigger Event. Thecommands of a sequence are successively executed until an “End Of Sequence” or “End Of List”command type identifier in a command is detected (command type is coded via bits CMD_SEL[1:0]). Thenumber of successive conversion commands that belong to a command sequence and the number ofcommand sequences inside the CSL can be freely defined by the user and is limited by the 64 conversioncommands a CSL can contain. A CSL must contain at least one conversion command and one “end of list”command type identifier. The minimum number of command sequences inside a CSL is zero and themaximum number of command sequences is 63. A command sequence is defined with bitsCMD_SEL[1:0] in the register ADCCMD_M by defining the end of a conversion sequence. The Figure 9-29 and Figure 9-30 provides examples of a CSL.Figure 9-29. Example CSL with sequences and an “End Of List” command type identifierCommand_1Command_2Command_3Command_4Command_5Command_6Command_7Command_8Command_9Command_10Command_11Command_12Command_13CSL_0/1End Of Sequencenormal conversionCommand Coding Informationnormal conversionnormal conversionnormal conversionnormal conversionnormal conversion0 00 00 00 00 00 10 00 00 10 00 01 10 0CMD_SEL[1:0]done by bitsEnd Of Sequencenormal conversionnormal conversionEnd Of Listnormal conversionnormal conversion} Sequence_1} Sequence_2} Sequence_3Waiting for triggerto proceedWaiting for triggerto proceedWaiting for triggerto proceedWait for RSTA orLDOK+RSTA
