M32CSLASH86 datasheet(284/505 Pages) RENESAS

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21. X/Y Conversion

)

(

X0R register, Y0R register

X1R register, Y1R register

X2R register, Y2R register

X3R register, Y3R register

X4R register, Y4R register

X5R register, Y5R register

X6R register, Y6R register

X7R register, Y7R register

X8R register, Y8R register

X9R register, Y9R register

X10R register, Y10R register

X11R register, Y11R register

X12R register, Y12R register

X13R register, Y13R register

X14R register, Y14R register

X15R register, Y15R register

b15

Bits in the XiR register

Bits in the YjR register

Address to be written

Address to be read

i=0 to 15

j=0 to 15

b15

Bits in XiR register

Data to be written

(i=0 to 15)

By reading the YjR register when the XYC0 bit in the XYC register is set to "1" (no data conversion), the

value written to the XiR register can be read directly. Figure 21.4 shows the conversion table when the

XYC0 bit is set to "1."

Figure 21.4 Conversion Table when Setting the XYC0 Bit to "1"

The XYC1 bit in the XYC register selects bit alignment of the value in the XiR register.

By writing to the XiR register while the XYC1 bit is set to "0" (no bit alignment conversion), bit alignment is

written as is. By writing to the XiR register while the XYC1 bit is set to "1" (bit sequence replaced), bit

alignment is written inversed.

Figure 21.5 shows the conversion table when the XYC1 bit is set to "1".

Figure 21.5 Conversion Table when Setting the XYC1 Bit to "1"

M32C/86 Datasheet(PDF) 284 Page - Renesas Technology Corp