Timer Interrupt Enable Register (Tier) - Renesas H8S Series Hardware Manual

Section 12 16-Bit Timer Pulse Unit (TPU)
12.3.4

Timer Interrupt Enable Register (TIER)

The TIER registers control enabling or disabling of interrupt requests for each channel. The TPU
has three TIER registers, one for each channel.
Bit Bit Name Initial value
7 TTGE 0

6 1
5 TCIEU 0
4 TCIEV 0
3 TGIED 0
Rev. 3.00 Jul. 14, 2005 Page 326 of 986
REJ09B0098-0300
R/W Description
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
R Reserved
This bit is always read as 1 and cannot be modified.
R/W Underflow Interrupt Enable
Enables or disables interrupt requests (TCU) by the
TCFU flag when the TCFU flag in TSR is set to 1 in
channels 1 and 2. In channel 0, bit 5 is reserved.
0: Interrupt requests (TCIU) by TCFU disabled
1: Interrupt requests (TCIU) by TCFU enabled
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
R/W TGR Interrupt Enable D
Enables or disables interrupt requests (TGID) by the
TGFD bit when the TGFD bit in TSR is set to 1 in channel
0. In channels 1 and 2, bit 3 is reserved. It is always read
as 0 and cannot be modified.
0: Interrupt requests (TGID) by TGFD disabled
1: Interrupt requests (TGID) by TGFD enabled.