SH7261 datasheet(571/1348 Pages) RENESAS

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Section 12 Multi-Function Timer Pulse Unit 2 (MTU2)

Rev. 2.00 Sep. 07, 2007 Page 539 of 1312

REJ09B0320-0200

12.5.2

DMAC Activation

The DMAC can be activated by the TGRA input capture/compare match interrupt in each channel.

For details, see section 11, Direct Memory Access Controller (DMAC).

In the MTU2, a total of five TGRA input capture/compare match interrupts can be used as DMAC

activation sources, one each for channels 0 to 4.

12.5.3

A/D Converter Activation

The A/D converter can be activated by one of the following three methods in the MTU2. Table

12.58 shows the relationship between interrupt sources and A/D converter start request signals.

(1)

A/D Converter Activation by TGRA Input Capture/Compare Match or at TCNT_4

Trough in Complementary PWM Mode

The A/D converter can be activated by the occurrence of a TGRA input capture/compare match in

each channel. In addition, if complementary PWM operation is performed while the TTGE2 bit in

TIER_4 is set to 1, the A/D converter can be activated at the trough of TCNT_4 count (TCNT_4 =

H'0000).

A/D converter start request signal TRGAN is issued to the A/D converter under either one of the

following conditions.

• When the TGFA flag in TSR is set to 1 by the occurrence of a TGRA input capture/compare

match on a particular channel while the TTGE bit in TIER is set to 1

• When the TCNT_4 count reaches the trough (TCNT_4 = H'0000) during complementary

PWM operation while the TTGE2 bit in TIER_4 is set to 1

When either condition is satisfied, if A/D converter start signal TRGAN from the MTU2 is

selected as the trigger in the A/D converter, A/D conversion will start.

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