SH7052 datasheet(364/919 Pages) RENESAS

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When the noise canceler counter (TCNT10H) value matches the noise canceler compare-match

input masking is cleared.

(2) Multiplied clock generation block

This block has 16-bit reload counters (TCNT10C, RLD10C), a 16-bit register free-running

counter (TCNT10G), and a 16-bit general register (GR10G).

16-bit reload counter 10C (RLD10C) is captured by 32-bit input capture register 10A

(ICR10A), and when RLDEN in the timer I/O control register (TIOR10) is 0, the value

captured in input capture register 10A is transferred to the multiplied clock generation block

reload register (RLD10C). The value transferred can be selected from 1/32, 1/64, 1/128, or

1/256 the original value, according to the setting of bits PIM1 and PIM0 in TIOR10.

16-bit reload counter 10C (TCNT10C) performs down-count operations. When TCNT10C

reaches H'0001, the value is read automatically from the reload buffer (RLD10C), internal

clock AGCK1 is generated, and the down-count operation is repeated. Internally generated

AGCK1 is input as a clock to the multiplied clock correction block 16-bit correction counter

(TCNT10E) and 16-bit free-running counter 10G (TCNT10G).

16-bit register free-running counter 10G (TCNT10G) counts on AGCK1 generated by

TCNT10C. It is initialized to H'0000 by external input from TI10.

The 16-bit general register (GR10G) can be used in a compare-match with free-running

counter 10G (TCNT10G) by setting bits IO10G2 to IO10G0 in the timer I/O control register

(TIOR10). An interrupt can be requested when a compare-match occurs. Also, by setting timer

interrupt enable register 10 (TIER10), an interrupt can be request in the event of TI10 input

after a compare-match.

(3) Multiplied clock correction block

This block has three 16-bit correction counters (TCNT10D, TCNT10E, TCNT10F) and a 16-

bit correction counter clear register (TCCLR10). When 32-bit input capture register 10A

(ICR10A) performs a capture operation due to input from external input pin TI10, the value in

correction counter 10D (TCNT10D) is transferred to TCNT10E and TCNT10D is incremented.

The value transferred to TCNT10E is 32, 64, 128, or 256 times the TCNT10D value, according

to the setting of bits PIM1 and PIM0 in the timer I/O control register (TIOR10).

16-bit correction counter 10E (TCNT10E) counts up on AGCK1 generated by reload counter

10C (TCNT10C, RLD10C) in the multiplied clock generation block. However, by setting the

CCS bit in the timer I/O control register (TIOR10), it is possible to stop free-running counter

10E (TCNT10E) when the free-running counter 10D (TCNT10D) multiplication value

specified by PIM1 and PIM0 and the free-running counter 10E (TCNT10E) value match. The

multiplied TCNT10D value is transferred when input capture register 10A (ICR10A) performs

a capture operation due to TI10 input.

SH7052 Datasheet(PDF) 364 Page - Renesas Technology Corp