M306H2MC-XXXFP Datasheet, PDF (167/210 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

MITSUBISHI MICROCOMPUTERS
M306H2MC-XXXFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
with DATA ACQUISITION CONTROLLER
2.15.7 24/18Humming Decoder
24/18 humming decoder operates only by written the data which 24/18 humming-encoded to 24/18
humming register 0 (address 021C16) and 1 (address 021E16). Can obtain the decoded result by
reading the same 24/18 humming register. Decoded result is shown in Figure 2.15.10 and humming
24/18 register composition is shown in Figure 2.15.11.
Address
021E16
Humming data H
MSB
Writing
24/18 humming register 1
Reading
Error information
Decode
value
0000 00
0 0 0 0 0 0 MSB
“1” output when single error
“1” output when double error
Figure 2.15.10 Decoded result
Humming data M
Humming data L
Writing
24/18 humming register 0
Reading
Decode value
LSB
Address
021C16
LSB
Output after correcting single error
Humming 24/18 register 0
b15
b8 b7
b0
Symbol
HM0
Address
021C16
When reset
000016
Function
RW
24/18 humming decoder opetates by two ways : writing data low-order and middle-order 16
bits to this register and writing data high-order 8 bits to humming 24/18 register 1 (021E16).
Can obtain the decoded result by reading this register and humming 24/18 register 1.
Humming 24/18 register 1
b15
b8 b7
b0
Symbol
HM1
Address
021E16
When reset
000016
Function
RW
24/18 humming decoder opetates by two ways : writing data low-order and middle-order 16
bits to humming 24/18 register 0 (021C16) to this register and writing data high-order 8 bits
to this register.
Can obtain the decoded result by reading this register and humming 24/18 register 0.
Figure 2.15.11 Humming 24/18 register composition
Rev . 1.0
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