Datasheet

 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....
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.
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....
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.
EDS Window