Hitachi H8S/2378, H8S/2378R Series Hardware Manual page 595

3. Phase counting mode 3
Figure 11.27 shows an example of phase counting mode 3 operation, and table 11.34
summarizes the TCNT up/down-count conditions.
TCLKA (channels 1 and 5)
TCLKC (channels 2 and 4)
TCLKB (channels 1 and 5)
TCLKD (channels 2 and 4)
TCNT value
Figure 11.27 Example of Phase Counting Mode 3 Operation
Table 11.34 Up/Down-Count Conditions in Phase Counting Mode 3
TCLKA (Channels 1 and 5)
TCLKC (Channels 2 and 4)
High level
Low level
High level
Low level
Legend
: Rising edge
: Falling edge
Up-count
TCLKB (Channels 1 and 5)
TCLKD (Channels 2 and 4)
Low level
High level
High level
Low level
Down-count
Operation
Don't care
Don't care
Don't care
Up-count
Down-count
Don't care
Don't care
Don't care
Rev. 1.0, 09/01, page 551 of 904
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