LH79524/LH79525 User’s Guide Direct Memory Access Controller
Version 1.0 5-13
5.2.2.6 Current Destination Registers (CURDHI and CURDLO)
The Current Destination Registers are 16-bit Read Only registers that hold the current
value of the destination address pointer. The value in the registers is used as an AHB
address in a DMA-to-destination data transfer over the AHB. If the DeInc bit in the Control
Register is set to 1, the value in the Current Destination Registers increments as data
transfers from the DMA to a destination. The value increments at the end of the address
phase of the AHB transfer by the HSIZE value. If the DeInc bit is 0, the Current Destination
Register holds the same value during the entire DMA data transfer.
Table 5-23. CURDHI Register
BIT 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIELD ///
RESET 0000000000000000
RW RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO
BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FIELD CURDHI
RESET 0000000000000000
RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW
ADDR DATASTREAM x BASE + 0x020
Table 5-24. CURDHI Fields
BITS NAME DESCRIPTION
31:16 /// Reserved Reading returns 0. Write the reset value.
15:0 CURDHI
Current Destination Upper Address This field contains the upper 16-bits of
the address for the destination of data for the current DMA transfer.
Table 5-25. CURDLO Register
BIT 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIELD ///
RESET 0000000000000000
RW RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO
BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FIELD CURDLO
RESET 0000000000000000
RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW RW
ADDR DATASTREAM x BASE + 0x024
Table 5-26. CURDLO Fields
BITS NAME DESCRIPTION
31:16 /// Reserved Reading returns 0. Write the reset value.
15:0 CURDLO
Current Destination Lower Address This field contains the lower 16-bits
of the address for the destination of data for the current DMA transfer.
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