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Bit 7—Compare Match Interrupt Enable B (CMIEB): Selects whether CMFB interrupt
requests (CMIB) are enabled or disabled when the CMFB flag of TCSR is set to 1.
Bit 7
CMIEB
Description
0
CMFB interrupt requests (CMIB) are disabled
1
CMFB interrupt requests (CMIB) are enabled
Bit 6—Compare Match Interrupt Enable A (CMIEA): Selects whether CMFA interrupt
requests (CMIA) are enabled or disabled when the CMFA flag of TCSR is set to 1.
Bit 6
CMIEA
Description
0
CMFA interrupt requests (CMIA) are disabled
1
CMFA interrupt requests (CMIA) are enabled
Bit 5—Timer Overflow Interrupt Enable (OVIE): Selects whether OVF interrupt requests
(OVI) are enabled or disabled when the OVF flag of TCSR is set to 1.
Bit 5
OVIE
Description
0
OVF interrupt requests (OVI) are disabled
1
OVF interrupt requests (OVI) are enabled
Bits 4 and 3—Counter Clear 1 and 0 (CCLR1 and CCLR0): These bits select the method by
which TCNT is cleared: by compare match A or B, or by an external reset input.
Bit 4
Bit 3
CCLR1
CCLR0
0
0
1
1
0
1
Description
Clear is disabled
Clear by compare match A
Clear by compare match B
Clear by rising edge of external reset input
(Initial value)
(Initial value)
(Initial value)
(Initial value)
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