HD6432351 datasheet(556/1025 Pages) RENESAS

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Section 11 Programmable Pulse Generator (PPG)

Rev. 3.00 Sep 15, 2006 page 522 of 988

REJ09B0330-0300

11.3.3

Normal Pulse Output

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

Port and

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 period

[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 DDR and NDER bits for the

pins to be used for pulse output to

[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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