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Section 18 Multi-Function Timer Pulse Unit (MTU)
Rev. 4.00 Sep. 14, 2005 Page 548 of 982
REJ09B0023-0400
18.3.4 Timer Interrupt Enable Register (TIER)
The TIER registers are 8-bit readable/writable registers that control enabling or disabling of
interrupt requests for each channel. The MTU has five TIER registers, one for each channel.
Bit Bit Name
Initial
value R/W Description
7 TTGE 0 R/W A/D Conversion Start Request Enable
Enables or disables generation of A/D conversion start
requests by TGRA input capture/compare match.
0: A/D conversion start request generation disabled
1: A/D conversion start request generation enabled
6 TGFASEL 0 R/W TGFA Interrupt/DMA Transfer Select
Selects the TGFA interrupt request or DMA transfer
request when the TGFA flag in TGRA is set to 1.
0: Interrupt request
1: DMA transfer request
5 TCIEU 0 R/W Underflow Interrupt Enable
Enables or disables interrupt requests (TCIU) by the
TCFU flag when the TCFU flag in TSR is set to 1 in
channels 1 and 2.
In channels 0, 3, and 4, bit 5 is reserved. It is always
read as 0, and should only be written with 0.
0: Interrupt requests (TCIU) by TCFU disabled
1: Interrupt requests (TCIU) by TCFU enabled
4 TCIEV 0 R/W Overflow Interrupt Enable
Enables or disables interrupt requests (TCIV) by the
TCFV flag when the TCFV flag in TSR is set to 1.
0: Interrupt requests (TCIV) by TCFV disabled
1: Interrupt requests (TCIV) by TCFV enabled