SD Specifications Part 1 UHS-II Simplified Addendum - SD Association
SD Specifications Part 1 UHS-II Simplified Addendum - SD Association
SD Specifications Part 1 UHS-II Simplified Addendum - SD Association
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<strong>UHS</strong>-<strong>II</strong> <strong>Simplified</strong> <strong>Addendum</strong> Version 1.01©Copyright 2010-2013 <strong>SD</strong> Card <strong>Association</strong>6.2.2.4 DCMDFigure 6-8 illustrates DCMD structure.BitByte01237 6 5 4 3 2 1 0R/WHeader(NP=1, Packet Type = DCMD)TMODERsvdRsvd4567891011(msb)(msb)DADR[TLEN](lsb)(lsb)Header Argument Extended ArgumentFigure 6-8 : DCMD Format R/W (Read/Write): Indicator for representing read or write command. 0: Data read command 1: Data write command TMODE[3:0] (Transfer Mode): Parameter settings for data transaction. (Refer to Figure 6-9 andTable 6-3.) DM (Duplex Mode): Duplex mode selection of data transfer associated with DCMD LM (Length Mode): Indicator whether TLEN is specified or not TLUM (TLEN Unit Mode): Indicator for unit of TLEN DAM (Data Access Mode): Data access mode selection.3 2 1 0DM LM TLUM DAMTMODEFigure 6-9 : TMODE Parameters48
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