Analog Devices adsp-2100

10Memory Interface
10 – 11
10.3.2 Data Memory Maps
The processors can address a total of 16K words of 16-bit data memory.
On-chip data memory is 1K in size and starts at address 0x3800 on the
ADSP-2101 and ADSP-2111. On-chip data memory is 512 locations in size
on the ADSP-2105 and ADSP-2115, again starting at address 0x3800. On-
chip data memory is 2K in size on the ADSP-2171 and ADSP-21msp58/59,
beginning at address 0x3000.
The processors’ control and status registers are mapped into the top 1K of
data memory, addresses 0x3C00-0x3FFF. The rest of the top 1K is
reserved. External data memory is available for additional data storage.
Figures 10.11, 10.12, and 10.13 show the data memory maps for each
ADSP-21xx processor.
AAAAA
AAAA
A
AAAAA
Memory-Mapped
Control Registers
& Reserved
0x3A00
0x0400
0x0000
1K External
DWAIT0
1K External
DWAIT1
10K External
DWAIT2
1K External
DWAIT3
1K External
DWAIT4
0x3400
0x0800
0x3000
0x3800
512 for ADSP-2105
ADSP-2115
ADSP-216x
EXTERNAL
RAM
INTERNAL
RAM
0x3C00
0x3FFF
1K for ADSP-2101
ADSP-2103
ADSP-2111
Figure 10.11 Data Memory Map (ADSP-2101, ADSP-2111, ADSP-2105, ADSP-2115, ADSP-2161/62/63/64)