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UPD703103A Datasheet(PDF) 71 Page - NEC

No. de Pieza. UPD703103A
Descripción  32-Bit Single-Chip Microcontrollers
Descarga  99 Pages
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Fabricante  NEC [NEC]
Página de inicio  http://www.nec.com/
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UPD703103A Datasheet(HTML) 71 Page - NEC

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CHAPTER 5 APPLICATION EXAMPLES
Application Note U17121EJ1V1AN
71
The PCI memory I/O space is assigned to the CSZ6 area.
The base address of the PCI memory space is set to CC0 0000H.
The base address of the PCI I/O space is set to C80 0000H.
Figure 5-4. Comparison Between CPU Memory Space and PCI Memory Space
PCI memory space
0000 0000H
FFFF FFFFH
SYSTEM_MEM_BASE
SYSTEM_MEM_BASE
CC0 0000H
CFF FFFFH
PCI_MEM_BASE[31:22] + 00 0000H
PCI_MEM_BASE[31:22] + 3F FFFFH
SYSTEM_MEM_BASE
SYSTEM_MEM_BASE
Main memory area
(SDRAM)
PCI memory area
CS6 area (4 MB)
CPU memory space
Main memory area
(SDRAM)
PCI memory area
Figure 5-5. Comparison Between CPU Memory Space and PCI I/O Space
PCI I/O space
0000 0000H
FFFF FFFFH
CA0 0000H
C80 0000H
CBF FFFFH
PCI_MEM_BASE[31:21] + 00 0000H
PCI_MEM_BASE[31:21] + 1F FFFFH
PCI I/O area
(2 MB)
CS6 area (4 MB)
CPU memory space
PCI I/O area
PCI bridge I/O area


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