SH7052 datasheet(257/919 Pages) RENESAS

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10.2.5

Timer Status Registers (TSR)

The timer status registers (TSR) are 16-bit registers. The ATU-II has 11 TSR registers: one each

for channels 0, 6 to 9, and 11, two each for channels 1 and 2, and one for channels 3 to 5. For

details of channel 10, see section 10.2.26, Channel 10 Registers.

Channel

Abbreviation

Function

TSR0

Indicates input capture, interval interrupt, and overflow status

TSR1A, TSR1B

Indicate input capture, compare-match, and overflow status

TSR2A, TSR2B

TSR3

Indicates input capture, compare-match, and overflow status

TSR6

Indicate cycle register compare-match status

TSR7

TSR8

Indicates down-counter output end (low) status

TSR9

Indicates event counter compare-match status

TSR11

Indicates compare-match and overflow status

The TSR registers are 16-bit readable/writable registers containing flags that indicate free-running

counter (TCNT) overflow, channel 0 input capture or interval interrupt generation, channel 3, 4, 5,

and 11 general register input capture or compare-match, channel 6 and 7 compare-matches,

channel 8 down-counter output end, and channel 9 event counter compare-matches.

Each flag is an interrupt source, and issues an interrupt request to the CPU if the interrupt is

enabled by the corresponding bit in the timer interrupt enable register (TIER).

Each TSR is initialized to H'0000 by a power-on reset, and in hardware standby mode and

software standby mode.

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