Direct Memory Access Controller LH79524/LH79525 User’s Guide5-8 Version 1.05.2.2.3 Maximum Count Register (MAX)The Maximum Count Register must be programmed with the maximum number of dataunits of the next DMA transfer. A data unit equals the source-to-DMA data width (byte, half-word or word). When the DMA Controller is enabled, the content of the Maximum CountRegister loads into the Terminal Count Register.If the maximum count is programmed to 1, the DMA Controller performs a single transferonly and sets the terminal count. If the maximum count is programmed to 0, the DMA Con-troller does not perform any function.The maximum terminal count is limited by a 16-bit value. (216 – 1).Table 5-12. MAX RegisterBIT 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16FIELD ///RESET 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0RW RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO ROBIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0FIELD MAXCOUNTRESET 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RWADDR DATASTREAM x BASE + 0x010Table 5-13. MAX FieldsBITS NAME DESCRIPTION31:16 /// Reserved Reading returns 0. Write the reset value.15:0 MAXCOUNT Maximum Count This field contains the maximum data unit count.
