Section 9 Multi-Function Timer Pulse Unit 2 (MTU2)
Rev. 3.00 Sep. 27, 2007 Page 260 of 758
REJ09B0243-0300
Examples of Phase Counting Mode Operation:
In phase counting mode, TCNT counts up or
down according to the phase difference between two external clocks. There are four modes,
according to the count conditions.
1. Phase counting mode 1
Figure 9.30 shows an example of phase counting mode 1 operation, and table 9.48 summarizes
the TCNT up/down-count conditions.
TCNT value
Time
TCLKA (channel 1)
TCLKC (channel 2)
TCLKB (channel 1)
TCLKD (channel 2)
Up-count
Down-count
Figure 9.30 Example of Phase Counting Mode 1 Operation
Table 9.48 Up/Down-Count Conditions in Phase Counting Mode 1
TCLKA (Channel 1)
TCLKC (Channel 2)
TCLKB (Channel 1)
TCLKD (Channel 2)
Operation
High level
Up-count
Low level
Low
level
High
level
High level
Down-count
Low level
High
level
Low
level
[Legend]
: Rising
edge
: Falling
edge
Содержание SH7124 R5F7124
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