Interrupt Sources - Renesas H8SX/1650 Hardware Manual

Section 9 16-Bit Timer Pulse Unit (TPU)
9.5

Interrupt Sources

There are three kinds of TPU interrupt sources: TGR input capture/compare match, TCNT
overflow, and TCNT underflow. Each interrupt source has its own status flag and enable/disable
bit, allowing generation of interrupt request signals to be enabled or disabled individually.
When an interrupt request is generated, the corresponding status flag in TSR is set to 1. If the
corresponding enable/disable bit in TIER is set to 1 at this time, an interrupt is requested. The
interrupt request is cleared by clearing the status flag to 0.
Relative channel priority levels can be changed by the interrupt controller, but the priority within a
channel is fixed. For details, see section 5, Interrupt Controller.
Table 9.37 lists the TPU interrupt sources.
Table 9.37 TPU Interrupts
Channel Name
0 TGI0A
TGI0B
TGI0C
TGI0D
TCI0V
1 TGI1A
TGI1B
TCI1V
TCI1U
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Interrupt Source
TGRA_0 input
capture/compare match
TGRB_0 input
capture/compare match
TGRC_0 input
capture/compare match
TGRD_0 input
capture/compare match
TCNT_0 overflow
TGRA_1 input
capture/compare match
TGRB_1 input
capture/compare match
TCNT_1 overflow
TCNT_1 underflow
Interrupt Flag DTC Activation
TGFA_0 Possible
TGFB_0 Possible
TGFC_0 Possible
TGFD_0 Possible
TCFV_0 Not possible
TGFA_1 Possible
TGFB_1 Possible
TCFV_1 Not possible
TCFU_1 Not possible