ADSP-2115_15 Datasheet, PDF (11/64 Pages) Analog Devices – ADSP-2100 Family DSP Microcomputers

ADSP-21xx
ADSP-2101/ADSP-2103/ADSP-2111
When MMAP = 0, on-chip program memory RAM occupies
2K words beginning at address 0x0000. Off-chip program
memory uses the remaining 14K words beginning at address
0x0800. In this configuration–when MMAP = 0–the boot
loading sequence (described below in “Boot Memory Inter-
face”) is automatically initiated when RESET is released.
When MMAP = 1, 14K words of off-chip program memory
begin at address 0x0000 and on-chip program memory RAM is
located in the upper 2K words, beginning at address 0x3800. In
this configuration, program memory is not booted although it
can be written to and read under program control.
ADSP-2105/ADSP-2115
When MMAP = 0, on-chip program memory RAM occupies
1K words beginning at address 0x0000. Off-chip program
memory uses the remaining 14K words beginning at address
0x0800. In this configuration–when MMAP = 0–the boot
loading sequence (described below in “Boot Memory Inter-
face”) is automatically initiated when RESET is released.
When MMAP = 1, 14K words of off-chip program memory
begin at address 0x0000 and on-chip program memory RAM is
located in the 1K words between addresses 0x3800–0x3BFF. In
this configuration, program memory is not booted although it
can be written to and read under program control.
INTERNAL
RAM
2K
LOADED FROM
EXTERNAL
BOOT MEMORY
0x0000
0x07FF
0x0800
0x0000
EXTERNAL
14K
EXTERNAL
14K
MMAP=0
0x3FFF
INTERNAL
RAM
2K
MMAP=1
No Booting
0x37FF
0x3800
0x3FFF
Figure 6. ADSP-2101/ADSP-2103/ADSP-2111 Program
Memory Maps
INTERNAL RAM
1K
LOADED FROM
EXTERNAL
BOOT MEMORY
RESERVED
1K
0x0000
0x03FF
0x0400
0x07FF
0x0800
EXTERNAL
14K
MMAP=0
0x3FFF
0x0000
EXTERNAL
14K
INTERNAL RAM
1K
RESERVED
1K
MMAP=1
No Booting
0x37FF
0x3800
0x3BFF
0x3C00
0x3FFF
Figure 8. ADSP-2105/ADSP-2115 Program Memory Maps
0x0000
8K
INTERNAL
ROM
RESERVED
0x1FF0
0x1FFF
0x2000
8K
EXTERNAL
MMAP=0
0x3FFF
2K
EXTERNAL
6K
INTERNAL
ROM
RESERVED
6K
EXTERNAL
0x0000
0x07FF
0x0800
0x1FF0
0x1FFF
0x2000
2K
INTERNAL
ROM
MMAP=1
0x37FF
0x3800
0x3FFF
Figure 7. ADSP-2161/62 Program Memory Maps
4K
INTERNAL
ROM
0x0000
RESERVED
0x0FF0
0x0FFF
0x1000
2K
EXTERNAL
2K
INTERNAL
ROM
RESERVED
0x0000
0x07FF
0x0800
0x0FF0
0x0FFF
0x1000
12K
EXTERNAL
MMAP=0
0x3FFF
10K
EXTERNAL
2K
INTERNAL
ROM
MMAP=1
0x37FF
0x3800
0x3FFF
Figure 9. ADSP-2163/64 Program Memory Maps
REV. B
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