H8SLASH3021 datasheet(331/712 Pages) RENESAS

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9. Programmable Timing Pattern Controller

Rev.2.00 Mar. 22, 2007 Page 307 of 684

REJ09B0352-0200

9.3.3

Normal TPC Output

Sample Setup Procedure for Normal TPC Output: Figure 9.4 shows a sample procedure for

setting up normal TPC output.

Normal TPC output

Set next TPC output data

Compare match?

Yes

Set next TPC output data

ITU setup

Port and

TPC setup

ITU setup

10.

11.

Set TIOR to make GRA an output compare

Set the TPC output trigger period.

Select the counter clock source with bits

TPSC2 to TPSC0 in TCR. Select the counter

clear source with bits CCLR1 and CCLR0.

Enable the IMFA interrupt in TIER.

Set the initial output values in the DR bits

of the input/output port pins to be used for

TPC output.

Set the DDR bits of the input/output port

pins to be used for TPC output to 1.

Set the NDER bits of the pins to be used for

TPC output to 1.

Select the ITU compare match event to be

used as the TPC output trigger in TPCR.

Set the next TPC output values in the NDR bits.

Set the STR bit to 1 in TSTR to start the

timer counter.

At each IMFA interrupt, set the next output

values in the NDR bits.

Select GR functions

Set GRA value

Select counting operation

Select interrupt request

Start counter

Set initial output data

Select port output

Enable TPC output

Select TPC output trigger

Figure 9.4 Setup Procedure for Normal TPC Output (Example)

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