Table 3-8. Dsp1611 Instruction/Coefficient Memory Map (X-Memory Space) - Lucent Technologies DSP1617 Information Manual

Information Manual
April 1998
3.2 Memory Space and Addressing
3.2.2 X-Memory Space (continued)

Table 3-8. DSP1611 Instruction/Coefficient Memory Map (X-Memory Space)

Decimal Address in
Address pc, pt, pi, pr
0 0x0000
0x03FF
1024 0x0400
0x2FFF
12288 0x3000
0x3FFF
16384 0x4000
0x43FF
17408 0x4400
0x7FFF
32768 0x8000
0xBFFF
49152 0xC000
0xDFFF
61439 0xF000
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.
Lucent Technologies Inc.
DSP1611/17/18/27/28/29 DIGITAL SIGNAL PROCESSOR
(continued)
†
MAP1 (EXM = 0 MAP2 (EXM = 1
‡
LOWPR = 0) LOWPR = 0)
IROM EROM
(1K)
Reserved
(15K)
EROM
(32K)
RAM<1—12> RAM<1—12>
(12K)
Reserved Reserved
(4K)
DRAFT COPY
MAP3 (EXM = 0
LOWPR = 1)
RAM<1—12>
(48K) (12K)
Reserved
(4K)
IROM
(1K)
Reserved
(15K)
EROM
(32K)
(12K)
(4K)
Software Architecture
MAP4 (EXM = 1
LOWPR = 1)
RAM<1—12>
(12K)
Reserved
(4K)
EROM
(48K)
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