Dxx Register - Analog Devices ADSP-TS101 TigerSHARC Hardware Reference Manual

DXx Register

If a two-dimensional (2D) DMA is disabled, this register contains the
16-bit modify (LSBs) and 16-bit count (MSBs) values for the DMA. If a
two-dimensional (2D) DMA is enabled, it contains the 16-bit modify and
16-bit count X dimension values, where X count is the number of normal
words to be transferred, and X modify is the number of normal words to
modify the address pointer.
Figure 7-6. DXx Register
DYx Register
This register is used together with the
DMA is enabled. It contains the 16-bit modify and the 16-bit Y count
dimension values, where Y modify is the difference between the address of
the last data element in a row and the address of the first element in the
following row. If a two-dimensional (2D) DMA is disabled, this register is
not used and any contents loaded are ignored.
Figure 7-7. DYx Register
ADSP-TS101 TigerSHARC Processor
Hardware Reference
31 16 15
X COUNT
31 16 15
Y COUNT
Direct Memory Access
0
X MODIFY
register when a two-dimensional
DX
0
Y MODIFY
7-17