M32CSLASH8B datasheet(295/406 Pages) RENESAS

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M32C/8B Group

21. X/Y Conversion

Preliminary specification

Specifications in this manual are tentative and subject to change.

REJ09B0450-0050 Rev.0.50 Oct 31, 2008

Page 278 of 385

When setting the XYC0 bit in the XYC register to 1 (data not converted) and reading the YjR register, the value

written to the XiR register can be read. Figure 21.4 shows a conversion table when the XYC0 bit is set to 1.

Figure 21.4

Conversion Table when the XYC0 Bit is Set to 1

The XYC1 bit in the XYC register selects bit alignment written to the XiR register.

When the XYC1 bit is set to 0 (bit alignment not converted) and writing to the XiR register, bit alignment is written as

is. When the XYC1 bit is set to 1 (bit alignment converted) and writing to the XiR register, inverted bit alignment is

written.

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

Figure 21.5

Conversion when the XYC1 Bit is Set to 1

Bits in XiR register

Write address

Read address

X0R register,

X1R register,

X2R register,

X3R register,

X4R register,

X5R register,

X6R register,

X7R register,

X8R register,

X9R register,

X10R register,

X11R register,

X12R register,

X13R register,

X14R register,

X15R register,

b15

Bits in YjR register

i = 0 to 15

j = 0 to 15

Y0R register

Y1R register

Y2R register

Y3R register

Y4R register

Y5R register

Y6R register

Y7R register

Y8R register

Y9R register

Y10R register

Y11R register

Y12R register

Y13R register

Y14R register

Y15R register

Write data

XiR register

(i = 0 to 15)

b15

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