M32C80 Datasheet, PDF (261/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
20. X/Y Conversion
The XYC0 bit in the XYC register determines how to read the YjR register.
By reading the YjR register when the XYC0 bit is set to "0" (data conversion), bit j in the X0R to X15R
registers can be read simultaneously.
For example, bit 0 in the X0R register can be read if reading bit 0 in the Y0R register, bit 0 in the X1R
register if reading bit 1 in the Y0R register..., bit 0 in the X14R register if reading bit 14 in the Y0R register
and bit 0 in the X15R register if reading bit 15 in the Y0R register.
Figure 20.2 shows the conversion table when the XYC0 bit is set to "0". Figure 20.3 shows an example of
the X/Y conversion.
Address to be read
Address to
be written
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
b0
Bits in the XiR register
Figure 20.2 Conversion Table when Setting the XYC0 Bit to "0"
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
Figure 20.3 X/Y Conversion
Rev. 1.00 Nov. 01, 2005 ^{Page 242} of 330
REJ09B0271-0100
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