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ATPL00B 데이터시트(PDF) 22 Page - ATMEL Corporation

부품명 ATPL00B
상세설명  FSK Power Line Communications SoC
PDF  152 Pages
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제조업체  ATMEL [ATMEL Corporation]
홈페이지  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATPL00B 데이터시트(HTML) 22 Page - ATMEL Corporation

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Atmel ATPL00B [datasheet]
43028A-ATPL - 9/12
22
Common and extended memory sizes vary depending on the value in P0(7:6), as shown above. According to these size
values, the core knows when the PC is pointing to an address located in common memory and when it is pointing to an
address located in extended memory. When PC is pointing to an address in extended memory, then P0(5:0) indicates
the extended page number and the physical address is automatically calculated. Some examples are shown below.
Example:
SX(1:0)=”00” (common memory size = 32KB)
PC=0x7F23 (PC pointing to an address in common memory space)
P0(5:0)= don
‟t care
LOGIC ADDRESS=0x7F23, common memory space
PHYSICAL ADDRESS=0x7F23 (common memory space  P0(5:0) is ignored)
Figure 4-5.
Extended Addressing example 1
Common
Program
PAGE 0
PAGE 1
0x000000
0x00BFFF
0x00C000
0x00FFFF
0x010000
PAGE 2
0x013FFF
0x014000
Physical Address = 0x7F23
Common
Program
PAGE 0
0x000000
0x00BFFF
0x00C000
0x00FFFF
PC=0x7F23
Logical Address = 0x7F23,
(commom memory space)
Physical Address = PC = 0x7F23



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