pic24hj128gp510t-i-pt Microchip Technology Inc., pic24hj128gp510t-i-pt Datasheet - Page 51

• Manufacturer Part Number: pic24hj128gp510t-i-pt
• Description: High-performance, 16-bit Microcontrollers
• Manufacturer: Microchip Technology Inc.

For remapping operations, the 8-bit Program Space
Visibility register (PSVPAG) is used to define a
16K word page in the program space. When the Most
Significant bit of the EA is ‘1’, PSVPAG is concatenated
with the lower 15 bits of the EA to form a 23-bit program
space address. Unlike table operations, this limits
remapping operations strictly to the user memory area.
TABLE 3-33:
© 2007 Microchip Technology Inc.
Instruction Access
(Code Execution)
TBLRD/TBLWT
(Byte/Word Read/Write)
Program Space Visibility
(Block Remap/Read)
Note 1:
Access Type
Data EA<15> is always ‘1’ in this case, but is not used in calculating the program space address. Bit 15 of
the address is PSVPAG<0>.
PROGRAM SPACE ADDRESS CONSTRUCTION
User
User
Configuration
User
Access
Space
PIC24HJXXXGPX06/X08/X10
<23>
0
0
0
TBLPAG<7:0>
TBLPAG<7:0>
0xxx xxxx
1xxx xxxx
0xx
Table 3-33 and Figure 3-6 show how the program EA is
created for table operations and remapping accesses
from the data EA. Here, P<23:0> refers to a program
space word, whereas D<15:0> refers to a data space
word.
<22:16>
xxxx xxxx
PSVPAG<7:0>
xxxx
Program Space Address
xxxx
PC<22:1>
xxxx xxxx xxxx xxxx
xxxx xxxx xxxx xxxx
<15>
xxxx
xxx xxxx xxxx xxxx
Data EA<15:0>
Data EA<15:0>
xxxx xxx0
<14:1>
Data EA<14:0>
DS70175F-page 49
(1)
<0>
0