H8SX1663 datasheet(647/1158 Pages) RENESAS

647 / 1158 page

Section 11 Programmable Pulse Generator (PPG)

Rev.1.00 Jun. 07, 2006 Page 595 of 1102

REJ09B0294-0100

11.4.2

Sample Setup Procedure for Normal Pulse Output

Figure 11.4 shows a sample procedure for setting up normal pulse output.

Select TGR functions

[1]

Set TGRA value

Set counting operation

Select interrupt request

Set initial output data

Enable pulse output

Select output trigger

Set next pulse

output data

Start counter

Set next pulse

output data

Normal PPG output

Yes

TPU setup

PPG setup

TPU setup

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

Compare match?

[1]

Set TIOR to make TGRA an output

compare register (with output disabled).

[2]

Set the PPG output trigger cycle.

[3]

Select the counter clock source with bits

TPSC2 to TPSC0 in TCR. Select the

counter clear source with bits CCLR1 and

CCLR0.

[4]

Enable the TGIA interrupt in TIER. The

DTC or DMAC can also be set up to

transfer data to NDR.

[5]

Set the initial output values in PODR.

[6]

Set the bits in NDER for the pins to be

used for pulse output to 1.

[7]

Select the TPU compare match event to

be used as the output trigger in PCR.

[8]

Set the next pulse output values in NDR.

[9]

Set the CST bit in TSTR to 1 to start the

TCNT counter.

[10] At each TGIA interrupt, set the next

output values in NDR.

Figure 11.4 Setup Procedure for Normal Pulse Output (Example)

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