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SC9RS08KA2 Datasheet(PDF) 34 Page - Freescale Semiconductor, Inc |
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SC9RS08KA2 Datasheet(HTML) 34 Page - Freescale Semiconductor, Inc |
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34 / 134 page  Chapter 4 Memory SC9RS08KA2 Series Data Sheet, Rev. 1 34 Freescale Semiconductor Table 4-5 shows the memory block to be accessed through paging window ($00C0–$00FF). NOTE Physical location $0000-$000E is RAM. Physical location $000F is register X. D[X] register is mapped to address $000E only. The physical RAM in $000E can be accessing through D[X] register when X register is either $0E or $CE with PAGESEL is $00. When PAGESEL register is $00, paging window is mapped to the first page ($00-$3F). Paged location $00C0–$00CE is mapped to physical location $0000-$000E, i.e., RAM. Paged location $00CF is mapped to register X. Therefore, accessing address $CE returns the physical RAM content in $000E, accessing address $000E returns D[X] register content. 14-bit memory address Start address of memory block selected 000000 AD[13:6] Figure 4-6. Memory Block Boundary Selector Table 4-5. Paging Window for $00C0–$00FF Page Memory Address $00 $0000–$003F $01 $0040–$007F $02 $0080–$00BF $03 $00C0–$00FF $04 $0100–$013F . . . . . . $FE $3F80–$3FBF $FF $3FC0–$3FFF |
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