Microchip Technology MA240029 データシート
2010-2011 Microchip Technology Inc.
DS39996F-page 73
PIC24FJ128GA310 FAMILY
FIGURE 4-10:
PROGRAM SPACE VISIBILITY OPERATION TO ACCESS LOWER WORD
FIGURE 4-11:
PROGRAM SPACE VISIBILITY OPERATION TO ACCESS UPPER WORD
23
15
0
DSRPAG
Data Space
Program Space
0000h
8000h
FFFFh
202h
000000h
7FFFFEh
010000h
017FFEh
When DSRPAG<9:8> =
10
and EA<15> =
1
EDS Window
The data in the page
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
Data EA<14:0>
...while the lower
15 bits of the EA
specify an exact
address within the
EDS area. This corre-
sponds exactly to the
same lower 15 bits of
the actual program
space address.
15 bits of the EA
specify an exact
address within the
EDS area. This corre-
sponds exactly to the
same lower 15 bits of
the actual program
space address.
23
15
0
DSRPAG
Data Space
Program Space
0000h
8000h
FFFFh
302h
000000h
7FFFFEh
010001h
017FFFh
When DSRPAG<9:8> =
11
and EA<15> =
1
The data in the page
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
designated by DSRPAG
is mapped into the
upper half of the data
memory space....
Data EA<14:0>
...while the lower
15 bits of the EA
specify an exact
address within the
EDS area. This corre-
sponds exactly to the
same lower 15 bits of
the actual program
space address.
15 bits of the EA
specify an exact
address within the
EDS area. This corre-
sponds exactly to the
same lower 15 bits of
the actual program
space address.
EDS Window