Epson Research and Development
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Vancouver Design Center
4.3 Memory Mapping and Aliasing
The PR31500/PR31700 uses a portion of the PC Card Attribute and IO space to access the
S1D13506. The S1D13506 responds to both PC Card Attribute and IO bus accesses, thus
freeing the programmer from having to set the PR31500/PR31700 Memory Configuration
Register 3 bit CARD1IOEN (or CARD2IOEN if slot 2 is used). As a result, the
PR31500/PR31700 sees the S1D13506 on its PC Card slot as described in the table below.
Table 4-2: PR31500/PR31700 to PC Card Slots Address Remapping for Direct Connection
S1D13506 Uses PC Card Slot #
Philips Address
Size
Function
0800 0000h
16M byte
Card 1 IO or Attribute
S1D13506 registers,
0900 0000h
0980 0000h
8M byte
8M byte
aliased 4 times at 2M byte intervals
S1D13506 display buffer,
1
aliased 4 times at 2M byte intervals
Card 1 IO or Attribute
Card 1 Memory
0A00 0000h
6400 0000h
0C00 0000h
32M byte
64M byte
16M byte
Card 2 IO or Attribute
S1D13506 registers,
0D00 0000h
0D80 0000h
8M byte
8M byte
aliased 4 times at 2M byte intervals
S1D13506 display buffer,
2
aliased 4 times at 2M byte intervals
Card 2 IO or Attribute
0E00 0000h
6800 0000h
32M byte
64M byte
Card 2 Memory
Interfacing to the Philips MIPS PR31500/PR31700 Processor
Issue Date: 01/02/08
S1D13506
X25B-G-009-02
EPSON [ EPSON COMPANY ]
