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TNETV2840ENGGU Folha de dados(PDF) 27 Page - Texas Instruments

Nome de Peças TNETV2840ENGGU
Descrição Electrónicos  Fixed-Point Digital Signal Processor
PDF  91 Pages
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

TNETV2840ENGGU Folha de dados(HTML) 27 Page - Texas Instruments

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Functional Overview
27
December 1999 − Revised October 2008
SPRS122F
Page 0
Data Memory
Page 1
Program Memory
Page 2
Page 3
0000h
8000h
FFFFh
MPDD
MPDD
Page 0
Data Memory
Page 1
Program Memory
Page 2
Page 3
MPCD3
0000h
8000h
FFFFh
MPDD
reserved
MPCD3
MPCD0
MPCD1
MPCD2
MPCD0
MPCD1
MPCD2
MPDD
MPDD
MPDD
MPCD3
MPCD3
MPCD3
Memory Map with OVLY = 1
Memory Map with OVLY = 0
MDD0
or
MDD1
MDD0
or
MDD1
NOTES: A. MPDD: local program/data memory in subsystem D
B. MDD: local data memory in subsystem D. MDD is controlled by the data memory map register (DMMR).
DMMR=0, MDD0 is mapped in 8000h − FFFFh.
DMMR=1, MDD1 is mapped in 8000h − FFFFh.
C. MPCD: shared program memory in subsystems C and D
Figure 3−6. Subsystem D CPU Memory Map
Figure 3−7 shows the CPU data memory map. The lower 32K-word data memory location in all pages is the
overlay area. Program memory has overlay area over the lower 32K words on all pages as well.
The overlay areas refer to:
1.
When OVLY = 1, the lower 32K words of data space are mapped to the lower 32K words of all program
pages in the memory map.
2.
When OVLY = 0, the lower 32K words of data space are mapped only to the lower 32K words of data space
and the lower 32K words of program page 3 are mapped to the lower 32K words of all program pages.



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