Table 3-9. Dsp1617 Instruction/Coefficient Memory Map (X-Memory Space); Table 3-10. Dsp1618 Instruction/Coefficient Memory Map (X-Memory Space) - Lucent Technologies DSP1617 Information Manual

DSP1611/17/18/27/28/29 DIGITAL SIGNAL PROCESSOR
Software Architecture
3.2 Memory Space and Addressing
3.2.2 X-Memory Space (continued)

Table 3-9. DSP1617 Instruction/Coefficient Memory Map (X-Memory Space)

Decimal Address in
Address pc, pt, pi, pr
0 0x0000
0x0FFF
4096 0x1000
0x3FFF
16384 0x4000
0x5FFF
24576 0x6000
0x7FFF
32768 0x8000
0x9FFF
40960 0xA000
0xBFFF
49152 0xC000
0xCFFF
53248 0xD000
65535 0xFFFF
† MAP1 is set automatically during an HDS trap. The user-selected map is restored at the end of the HDS trap service routine.
‡ LOWPR is an alf register bit. The Lucent Technologies development system tools can independently set the memory map.
§ MAP3 is not available if the secure mask-programmable option is selected.

Table 3-10. DSP1618 Instruction/Coefficient Memory Map (X-Memory Space)

Decimal Address in
Address pc, pt, pi, pr
0 0x0000
0x0FFF
4096 0x1000
0x3FFF
16384 0x4000
0x7FFF
32768 0x8000
0xBFFF
49152 0xC000
0xCFFF
53248 0xD000
65535 0xFFFF
† MAP1 is set automatically during an HDS trap. The user-selected map is restored at the end of the HDS trap service routine.
‡ LOWPR is an alf register bit. The Lucent Technologies development system tools can independently set the memory map.
§ MAP3 is not available if the secure mask-programmable option is selected.
3-12
(continued)
†
MAP1 (EXM = 0 MAP2 (EXM = 1
‡
LOWPR = 0) LOWPR = 0)
IROM EROM
(24K)
Reserved
(8K)
EROM
(16K)
RAM<1—4> RAM<1—4>
(4K)
Reserved Reserved
(12K)
†
MAP1 (EXM = 0 MAP2 (EXM = 1
‡
LOWPR = 0) LOWPR = 0)
IROM EROM
(16K)
EROM
(32K)
RAM<1—4> RAM<1—4>
(4K)
Reserved Reserved
(12K)
DRAFT COPY
§
MAP3 (EXM = 0
LOWPR = 1)
RAM<1—4>
(48K) (4K)
Reserved
(12K)
IROM
(24K)
Reserved
(8K)
EROM
(4K) (16K)
(12K)
§
MAP3 (EXM = 0
LOWPR = 1)
RAM<1—4>
(48K) (4K)
Reserved
(12K)
IROM
(16K)
EROM
(32K)
(4K)
(12K)
Information Manual
April 1998
MAP4 (EXM = 1
LOWPR = 1)
RAM<1—4>
(4K)
Reserved
(12K)
EROM
(48K)
MAP4 (EXM = 1
LOWPR = 1)
RAM<1—4>
(4K)
Reserved
(12K)
EROM
(48K)
Lucent Technologies Inc.