M30800MC Datasheet, PDF (178/317 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

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M16C/80
SINGLE-CHIP
Mitsubishi microcomputers
(100-pin version) group
16-BIT CMOS MICROCOMPUTER
When the read-mode set bit (bit 0 at address 02E016) is “1”, you can read the value written to the Xi register
by reading the Yi register. Figure 1.24.4 shows the conversion table when the read mode set bit = “1”.
Write address
Read address
X15,Y15 register (0002DE16)
X14,Y14 register (0002DC16)
X13,Y13 register (0002DA16)
X12,Y12 register (0002D816)
X11,Y11 register (0002D616)
X10,Y10 register (0002D416)
X9,Y9 register (0002D216)
X8,Y8 register (0002D016)
X7,Y7 register (0002CE16)
X6,Y6 register (0002CC16)
X5,Y5 register (0002CA16)
X4,Y4 register (0002C816)
X3,Y3 register (0002C616)
X2,Y2 register (0002C416)
X1,Y1 register (0002C216)
X0,Y0 register (0002C016)
b15
b0
Bit of Xi register
Bit of Yi register
Figure 1.24.4. Conversion table when the read mode set bit = “1”
The value written to the Xi register is controlled by the write mode set bit (bit 1 at address 02E016).
When the write mode set bit (bit 1 at address 02E016) is “0” and data is written to the Xi register, the bit
stream is written directly.
When the write mode set bit (bit 1 at address 02E016) is “1” and data is written to the Xi register, the bit
sequence is reversed so that the high becomes low and vice versa. Figure 1.24.5 shows the conversion
table when the write mode set bit = “1”.
b15
b0
Write address
b15
b0
Bit of Xi register
Figure 1.24.5. Conversion table when the write mode set bit = “1”
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