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TNETV2840ENGGU 数据表(PDF) 24 Page - Texas Instruments

部件名 TNETV2840ENGGU
功能描述  Fixed-Point Digital Signal Processor
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制造商  TI1 [Texas Instruments]
网页  http://www.ti.com
标志 TI1 - Texas Instruments

TNETV2840ENGGU 数据表(HTML) 24 Page - Texas Instruments

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Functional Overview
24
December 1999 − Revised October 2008
SPRS122F
3.1
Memory
Each 5441 DSP subsystem maintains the peripheral register memory map and interrupt location/priorities of
the standard 5421. Each individual subsystem CPU memory map is illustrated in Figure 3−3 through
Figure 3−6.
The arbitration and access for local program/data memory and local data memory is based on a 16K-word
block size. The arbitration and access for all the shared memory is based on a 32K-word block size.
3.1.1 Memory Maps
Figure 3−3 through Figure 3−6 illustrate the CPU memory maps for subsystem A through subsystem D.
Figure 3−7 provides a detailed memory map of the local data memory relative to CPU subsystems A, B, C,
and D.
Page 0
Data Memory
Page 1
8000h
Page 2
FFFFh
Page 3
0000h
MPDA
Page 0
Data Memory
Page 1
Program Memory
Page 2
Page 3
0000h
8000h
FFFFh
: reserved
Program Memory
Memory Map with OVLY = 1
MPDA
MPDA
MPDA
MPDA
MPAB3
MPAB0
MPAB1
MPAB2
MPAB3
MPDA
MPAB3
MPAB3
MPAB3
MPAB0
MPAB1
MPAB2
Memory Map with OVLY = 0
MDA0
or
MDA1
MDA0
or
MDA1
NOTES: A. MPDA: local program/data memory in subsystem A
B. MDA: local data memory in subsystem A. MDA is controlled by the data memory map register (DMMR).
DMMR=0, MDA0 is mapped in 8000h − FFFFh.
DMMR=1, MDA1 is mapped in 8000h − FFFFh.
C. MPAB: shared program memory in subsystems A and B
Figure 3−3. Subsystem A CPU Memory Map


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