Analog Devices SHARC ADSP-21368 Hardware Reference Manual page 86

Setting Up DMA Parameter Registers
All addresses in the index registers are offset by a value that matches the
processor's first internal normal word addressed RAM location (before the
I/O processor uses the addresses). For the ADSP-21367/8/9 and
ADSP-2137x processors, this offset value is 0x0008 0000.
DMA ADDRESS GENERATOR (INTERNAL ADDRESSES)
INTERNAL
MEMORY
ADDRESS
DMA WORD COUNTER
– 1
+
DMA ADDRESS GENERATOR (EXTERNAL ADDRESSES)
EXTERNAL
EIPP
MEMORY EXT. INDEX (ADDRESS)
ADDRESS
POST-MODIFY
Figure 2-3. DMA Address Generator
2-30
IIX
INDEX (ADDRESS)
+/-
POST-MODIFY
CX
COUNT
LOCAL BUS
EMPP
EXT. MODIFIER
+
ADSP-21368 SHARC Processor Hardware Reference
LOCAL BUS
IMX
MODIFIER
LOCAL BUS
CPX
CHAIN POINTER
WORKING REGISTER
MUX
ECPP
EXT. COUNT
– 1
+