Section 9 Multi-Function Timer Pulse Unit 2 (MTU2)
Rev. 3.00 Sep. 27, 2007 Page 337 of 758
REJ09B0243-0300
9.7.8
Contention between Buffer Register Write and TCNT Clear
When the buffer transfer timing is set at the TCNT clear by the buffer transfer mode register
(TBTM), if TCNT clear occurs in the T2 state of a TGR write cycle, the data that is transferred to
TGR by the buffer operation is the data before write.
Figure 9.112 shows the timing in this case.
Address
Write signal
TCNT clear
signal
Buffer transfer
signal
TGR write cycle
T1
T2
Buffer register
address
N
N
M
Buffer register write data
Buffer register
TGR
MP
φ
Figure 9.112 Contention between Buffer Register Write and TCNT Clear
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